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Composition dependent density of ternary aqueous solutions of ionic surfactants and salts J. Atmos. Chem. (IF 1.521) Pub Date : 2021-01-21 Silvia M. Calderón, Nønne L. Prisle
Surfactants exist in atmospheric aerosols mixed with inorganic salts and can significantly influence the formation of cloud droplets due to bulk–surface partitioning and surface tension depression. To model these processes, we need continuous parametrizations of the concentration dependent properties of aqueous surfactant–salt solutions for the full composition range from pure water to pure surfactant
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Inorganic Ionic Composition of Rainwater at a High Altitude Station over the Western Ghats in Peninsular India J. Atmos. Chem. (IF 1.521) Pub Date : 2021-01-21 V. V. Waghmare, M. Y. Aslam, L. Yang, P. D. Safai, G. Pandithurai
This study investigates chemical composition of rainwater (RW) and its contribution from different sources collected over the period of two years (2016 and 2017) at a high altitude location (1380 m above mean sea level) located at Mahabaleshwar situated in the Western Ghats in Peninsular India. The volume weighted mean pH of RW was found to vary between 4.57 and 7.51 (average 5.95) indicating overall
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Chemical composition and source attribution of PM 2.5 and PM 10 in Delhi-National Capital Region (NCR) of India: results from an extensive seasonal campaign J. Atmos. Chem. (IF 1.521) Pub Date : 2021-01-09 Moqtik Bawase, Yogesh Sathe, Hemant Khandaskar, Sukrut Thipse
Ambient particulate matter concentrations in Delhi and its peripheral towns has been a matter of serious concern in the last decade. Understanding the changing nature of the chemical composition of particulates, their spatial and seasonal variability can be utilized for identifying probable sources. This study presents an extensive dataset of the chemical composition of PM2.5 and PM10 collected using
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Emission estimates of trace gases (VOCs and NO x ) and their reactivity during biomass burning period (2003–2017) over Northeast India J. Atmos. Chem. (IF 1.521) Pub Date : 2021-01-05 Kunal Bali, Amit Kumar, Sapna Chourasiya
The study analysed spatio-temporal distribution of fire radiative power (FRP) and estimates of trace gases [volatile organic compounds (VOCs) and nitrogen oxides (NOx)] along with their reactivity during biomass burning period of March (2003–2017) over the northeast region (NER), India. Reanalysis data of FRP along with emission rates of trace gases have been retrieved from Global Fire Assimilation
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Characterization of Rome’s rainwater in the early of 2018 aiming to find correlations between chemical-physical parameters and sources of pollution: a statistical study J. Atmos. Chem. (IF 1.521) Pub Date : 2020-11-26 Luca Ugo Fontanella, Mauro Tomassetti, Giovanni Visco, Maria Pia Sammartino
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Model for estimating activity coefficients in binary and ternary ionic surfactant solutions J. Atmos. Chem. (IF 1.521) Pub Date : 2020-11-07 Silvia M. Calderón, Jussi Malila, Nønne L. Prisle
We introduce the CMC based Ionic Surfactant Activity model (CISA) to calculate activity coefficients in ternary aqueous solutions of an ionic surfactant and an inorganic salt. The surfactant can be either anionic or cationic and in the present development, the surfactant and inorganic salts share a common counterion. CISA incorporates micellization into the Pitzer–Debye–Hückel (PDH) framework for activities
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Comparison of chemical characteristics of PM 2.5 during two winters in Xiangtan City in south central China J. Atmos. Chem. (IF 1.521) Pub Date : 2020-10-23 Xiao-Yao Ma, Zheng-Hui Xiao, Li-Zhi He, Yun-Jiang Cao, Ji-Song Liu
To assess the efficacy of the “Implementation Details of Air Pollution Prevention and Control Action Plan”, the chemical composition of PM2.5 and other pollutants was determined during the winters of 2013–2014 and 2016–2017 at two urban sites in Xiangtan City, Hunan. The concentrations of PM2.5, SO2, and NO2 decreased from 146.0 to 94.5 μg/m3, 75.9 to 33.5 μg/m3, and 80.6 to 55.8 μg/m3, respectively
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Vertical distributions of the microscopic morphological characteristics and elemental composition of aerosols over India J. Atmos. Chem. (IF 1.521) Pub Date : 2020-08-14 Mukunda M. Gogoi, Roseline C. Thakur, Sahina Gazi, Vijayakumar S. Nair, Rahul Mohan, S. Suresh Babu
Particle morphology and elemental compositions are among the crucial parameters of aerosols required for accurate understanding of the climatic effect of aerosols in the earth-atmosphere system; yet their vertical distributions and region specific properties are poorly characterised due to sparse in-situ measurements. This is the first study to classify and quantify the vertical distributions of the
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Long term trends of wet deposition and atmospheric concentrations of nitrogen and sulfur compounds at EMEP site in Armenia J. Atmos. Chem. (IF 1.521) Pub Date : 2020-07-22 Yekaterina Perikhanyan, Gayane Shahnazaryan, Arpine Gabrielyan
This paper presents the trends of gaseous nitric acid, nitrogen dioxide, sulfur dioxide, ammonia and nitrate, ammonium, sulfate ions in atmospheric air, and nitrate, ammonium and sulfate ions in wet deposition over 2008–2018 in Armenia. Atmospheric nitrogen and sulfur concentrations were monitored by data obtained from filter pack samplers and glass sinter filters at background monitoring station of
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Sources of HULIS-C and its relationships with trace metals, ionic species in PM 2.5 in suburban Shanghai during haze and non-haze days J. Atmos. Chem. (IF 1.521) Pub Date : 2020-06-19 Myat Sandar Win, Junyang Zeng, Chuanhe Yao, Mengfei Zhao, Guangli Xiu, Tingting Xie, Lanfang Rao, Luying Zhang, Hui Lu, Xinchun Liu, Qingyue Wang, Senlin Lu
Humic-like substances (HULIS), the most ubiquitous class of water-soluble organic compounds in the atmosphere could enhance the generation of reactive oxygen species (ROS), and play a significant role in impacting aerosol chemistry and health effects. In this study, twenty-three PM2.5 samples were collected in the atmosphere of suburban Shanghai from November 29 to December 17, 2015, and March 17 to
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Chemical characteristics of particulate matters and their emission sources over Varanasi during winter season J. Atmos. Chem. (IF 1.521) Pub Date : 2020-05-30 Vineet Pratap, Akhilesh Kumar, Shani Tiwari, Pradeep Kumar, Avneesh Kumar Tripathi, Abhay Kumar Singh
The chemical composition of particulate matter impacts both human health and climate. In this study, the chemical characteristics of particulate matter was measured for four months (November 2016–February 2017) at Varanasi, which is located in the middle of the Indo-Gangetic Basin (IGB). The daily observed mean values of PM10 and PM2.5 are 134 ± 48 and 213 ± 80 μg/m3, respectively, which exceeds both
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Variation of carbonaceous species and trace elements in PM 10 at a mountain site in the central Himalayan region of India J. Atmos. Chem. (IF 1.521) Pub Date : 2020-05-29 S. K. Sharma, Nikki Choudhary, Priyanka Srivastava, Manish Naja, N. Vijayan, Garima Kotnala, T. K. Mandal
Abstract Observations of carbonaceous species [organic carbon (OC), elemental carbon (EC), water soluble organic carbon (WSOC), carbonaceous aerosols (CAs) and secondary organic carbon (SOC) ] and trace elements (As, Cr, Ni, Zn, Na, Mg, Al, P, K, Ca, Ti, Fe, and Mn) in PM10 are made over a high altitude site (ARIES, Nainital, 29.4° N, 79.5° E, ~1958 m amsl) in the central Himalayan region during October
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Ship-borne observations of sea fog and rain chemistry over the North and South Pacific Ocean J. Atmos. Chem. (IF 1.521) Pub Date : 2020-05-23 Hyun Jae Kim, Taehyoung Lee, Taehyun Park, Gyutae Park, Jeffrey L. Collett, Keyhong Park, Joon Young Ahn, Jihee Ban, Seokwon Kang, Kyunghoon Kim, Seung-Myung Park, Eun Hea Jho, Yongjoo Choi
Clouds, fogs, and rain can serve as useful integrators of both atmospheric aerosols and soluble trace gases. To better understand the chemical characteristics of sea fog and rain in the North and South Pacific Ocean, fog and rain were measured aboard the R/V ARAON in 2012 and 2014, respectively, as part of the Ship-borne Pole-to-Pole Observations (SHIPPO) project. The mean sea fog pH (3.59) was lower
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Effect of wind speed on the level of particulate matter PM10 concentration in atmospheric air during winter season in vicinity of large combustion plant J. Atmos. Chem. (IF 1.521) Pub Date : 2020-05-17 Robert Cichowicz, Grzegorz Wielgosiński, Wojciech Fetter
The concentrations of suspended particulate matter PM10 in two-month winter period, i.e. December–January in years 2009–2015, were analyzed in relation to the values of wind speed in that time. It was possible to analyze results of air pollution measurements performed in the measuring station from the perspective of their higher levels in winter seasons (so-called smog episodes). Results from 3 stations
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Physico-chemical characterization and sink mechanism of atmospheric aerosols over South-west India J. Atmos. Chem. (IF 1.521) Pub Date : 2020-03-19 Krishnakant B. Budhavant, Ranjeeta D. Gawhane, Pasumarthi Surya Prakash Rao, Hari Ram Chandrika Ranjendra Nair, Promod D. Safai
The properties of the atmospheric aerosols depend on the source region and on the modifications that occur during their transport in the air. We have studied physical and chemical properties of aerosols along with their sink mechanism over two locations in southwest India, an urban site (Pune) and well-established climate observatory at Sinhagad (SINH), which represents rural and high altitude site
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Precipitation chemistry and stable isotopic characteristics at Wengguo in the northern slopes of the Himalayas J. Atmos. Chem. (IF 1.521) Pub Date : 2020-02-18 Subash Adhikari, Fan Zhang, Chen Zeng, Lekhendra Tripathee, Namita Paudel Adhikari, Jie Xu, Guanxing Wang
The major ions in precipitation can reflect the conditions of the atmosphere, while stable isotopic characteristics provide information on the moisture source. In order to understand the local hydro-chemical features and regional geochemical cycle, it is essential to assess the chemical composition of precipitation and the associated sources. Therefore, a total of 57 precipitation samples (2016 to
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Temporal and source assessments of organic and elemental carbon at sites in the northern South African interior J. Atmos. Chem. (IF 1.521) Pub Date : 2020-02-11 Petra Maritz, Johan P. Beukes, Pieter G. van Zyl, Catherine Liousse, Eric Gardrat, Avishkar Ramandh, Gabisile V. Mkhatshwa
Particulate matter (PM) can affect climate, air quality, human health, acid deposition and visibility, and contain a significant fraction of organic (OC) and elemental carbon (EC). Southern Africa is an important source region for OC and EC, however, little OC and EC data have been published for this region. This paper presents a multi-year, multi-site (an urban-industrial site in the Vaal Triangle
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Spatio-temporal distribution and chemical composition of PM 2.5 in Changsha, China J. Atmos. Chem. (IF 1.521) Pub Date : 2019-12-11 Nan-Nan Zhang, Yang Guan, Lei Yu, Fang Ma, Yi-Fan Li
The rapid economic development and significant expansion of urban agglomerations in China have resulted in issues associated with haze and photochemical smog. Central China, a transitional zone connecting the eastern coast and western interior, suffers from increasing atmospheric pollution. This study performed a spatio-temporal analysis of fine particulate matter (PM2.5) pollution in Changsha, a provincial
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Chemical characteristics and source apportionment of PM 2.5 in Wuhan, China J. Atmos. Chem. (IF 1.521) Pub Date : 2019-07-30 Fan Huang, Jiabin Zhou, Nan Chen, Yuhua Li, Kuan Li, Shuiping Wu
Continuous online measurements of fine particulate matter mass (PM2.5) and its chemical composition were carried out at an urban monitoring site in Wuhan from March 2017 to February 2018. The PM2.5 mass concentration ranged from 6.3 to 223 μg/m3, with the highest in winter and the lowest in summer. Water soluble ions (WSIs) were the most abundant component in PM2.5 (28.8 ± 22.9 μg/m3), followed by
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Water-soluble ions and oxygen isotope in precipitation over a site in northeastern Tibetan Plateau, China J. Atmos. Chem. (IF 1.521) Pub Date : 2019-06-17 Linqing Wang, Zhenxing Shen, Di Lu, Hongmei Xu, Ningning Zhang, Yali Lei, Qian Zhang, Xin Wang, Qiyuan Wang, Junji Cao
A total of 30 precipitation samples were collected at a remote site of Qinghai Lake in the northeastern Tibetan Plateau, China, from June to August 2010. All samples were analyzed for major cations (NH4+, Na+, K+, Ca2+, and Mg2+) and anions (F−, Cl−, NO3−, and SO42−), electric conductivity (EC), pH, dissolved organic carbon (DOC), and oxygen isotopic composition (δ18O). The volume-weighted mean (VWM)
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PM 10 carbonaceous aerosols and their real-time wet scavenging during monsoon and non-monsoon seasons at Delhi, India J. Atmos. Chem. (IF 1.521) Pub Date : 2019-08-21 Saurabh Sonwani, Umesh C. Kulshrestha
Real-time simultaneous measurements of rainwater and PM10 chemistry were carried out at Delhi during the year 2016–17 in order to assess the levels of carbonaceous species and their wet scavenging during monsoon and non-monsoon seasons at Delhi. The PM10 samples were collected Before Rain (BR), During Rain (DR) and After Rain (AR) events, while rainwater samples collected on an event basis. The ambient
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Optical properties of atmospheric particles over an urban site in Mexico City and a peri-urban site in Queretaro J. Atmos. Chem. (IF 1.521) Pub Date : 2019-08-02 Rafael N. Liñán-Abanto, O. Peralta, D. Salcedo, L. G. Ruiz-Suárez, P. Arnott, G. Paredes-Miranda, H. Alvarez-Ospina, T. Castro
Optical properties of atmospheric particles at Mexico City (UNAM) and Queretaro (JQRO) were measured with a Photoacoustic Extinctiometer (PAX) at 870 nm. The Mexico City Metropolitan Area has around 21 million inhabitants and Queretaro Metropolitan Area has little more than a million. Observations of meteorological parameters (relative humidity, solar radiation, and wind speed) were used to identify
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PM 2.5 and PM 10 in the urban area of Naples: chemical composition, chemical properties and influence of air masses origin J. Atmos. Chem. (IF 1.521) Pub Date : 2019-05-09 Elena Chianese, Giuseppina Tirimberio, Angelo Riccio
In order to investigate particulate matter characteristics in the urban area of Naples, South of Italy, PM10 and PM2.5 chemical composition and properties were determined; in particular, ionic composition (Na+, K+, NH4+, Mg2+, Ca2+, HCOO-, CH3COO−, Cl−, NO2−, NO3−, SO42−, C2O42−) and concentration of specific metals (Pb, Cd, Cu and Zn) were evaluated in association with an air masses trajectories study
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A one year study of functionalised medium-chain carboxylic acids in atmospheric particles at a rural site in Germany revealing seasonal trends and possible sources J. Atmos. Chem. (IF 1.521) Pub Date : 2019-04-09 M. Teich, D. van Pinxteren, H. Herrmann
This study presents a yearlong data set of 28 medium-chain functionalised carboxylic acids (C5 to C10) in atmospheric aerosol particles (PM10) from a German rural measurement station, which is analysed to obtain seasonal trends and evidences for possible sources of these rarely studied compounds. The analysed carboxylic acids were divided into four main groups: (I) functionalised aliphatic monocarboxylic
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Assessment of polar organic aerosols at a regional background site in southern Africa J. Atmos. Chem. (IF 1.521) Pub Date : 2019-04-29 Wanda Booyens, Johan P. Beukes, Pieter G. Van Zyl, Jose Ruiz-Jimenez, Matias Kopperi, Marja-Liisa Riekkola, Miroslav Josipovic, Ville Vakkari, Lauri Laakso
A recent paper reported GCxGC-TOFMS analysis used for the first time in southern Africa to tentatively characterise and semi-quantify ~1000 organic compounds in aerosols at Welgegund – a regional background atmospheric monitoring station. Ambient polar organic aerosols characterised are further explored in terms of temporal variations, as well as the influence of meteorology and sources. No distinct
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Ground-based observation of lightning-induced nitrogen oxides at a mountaintop in free troposphere J. Atmos. Chem. (IF 1.521) Pub Date : 2019-05-14 Ryuichi Wada, Y. Sadanaga, S. Kato, N. Katsumi, H. Okochi, Y. Iwamoto, K. Miura, H. Kobayashi, M. Kamogawa, J. Matsumoto, S. Yonemura, Y. Matsumi, M. Kajino, S. Hatakeyama
Lightning is an important source of nitrogen oxides (LNOx). The actual global production of LNOx is still largely uncertain. One of the reasons for this uncertainty is the limited available observation data. We measured the concentrations of total reactive nitrogen (NOy), nitric oxide (NO) and nitrogen dioxides (NO2) and then obtained NOx oxidation products (NOz: NOz = NOy - NOx) at a station at the
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Dissolved organic carbon in summer precipitation and its wet deposition flux in the Mt. Yulong region, southeastern Tibetan Plateau J. Atmos. Chem. (IF 1.521) Pub Date : 2019-02-20 Hewen Niu, Shichang Kang, Xiaofei Shi, Guotao Zhang, Shijin Wang, Tao Pu
Dissolved organic carbon (DOC) is an important organic pollutant in the air-water carbon cycle system, potentially influencing the global climate. In this study, 204 rainwater samples from five sampling stations in the Mt. Yulong region were synchronously collected from June to September in 2014. We comprehensively investigated the sources and wet deposition of DOC in summer precipitation. The average
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Seasonal variations and source apportionment of water-soluble inorganic ions in PM 2.5 in Nanjing, a megacity in southeastern China J. Atmos. Chem. (IF 1.521) Pub Date : 2019-03-23 Xiaoyu Zhang, Xin Zhao, Guixiang Ji, Rongrong Ying, Yanhong Shan, Yusuo Lin
Daily PM2.5 samples were collected in Nanjing, a megacity in southeastern China, for a period of one-half of a month during every season from 2014~2015. Mass concentrations of nine water soluble inorganic ions (F−, Cl−, SO42−, NO3−, Na+, NH4+, K+, Mg2+ and Ca2+) were determined using ion chromatography to identify the chemical characteristics and potential sources of PM2.5. The mass concentrations
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Emission inventory of anthropogenic air pollutant sources and characteristics of VOCs species in Sichuan Province, China J. Atmos. Chem. (IF 1.521) Pub Date : 2019-01-31 Zihang Zhou, Qinwen Tan, Ye Deng, Keying Wu, Xinyue Yang, Xiaoling Zhou
The purpose of this paper is to develop an emission inventory of anthropogenic air pollutants and VOCs species in Sichuan Province. Based on the anthropogenic source activity data collected in different cities of Sichuan Province and the selected emission factors, the 1 km × 1 km gridded atmospheric air pollutant emission inventory of 2015 was developed in the “bottom-up” and “top-down” approaches
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Elevated Barium concentrations in rain water from east-coast of India: role of regional lithology J. Atmos. Chem. (IF 1.521) Pub Date : 2019-02-08 Gyana Ranjan Tripathy, Smruti Mishra, Mohd Danish, Kirpa Ram
Alkaline earth metals act as dominating acid-neutralizing species in atmosphere and hence, regulate the rain water chemistry significantly. In this contribution, concentrations of these metals (Mg, Ca, Sr and Ba) and other major ions in rain water samples, collected during south-west monsoon of year 2017, from a coastal location (Berhampur) in eastern part of India have been analyzed to trace their
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Correction to: Trace ambient levels of particulate mercury and its sources at a rural site near Delhi J. Atmos. Chem. (IF 1.521) Pub Date : 2018-12-03 Anita Kumari, Umesh Kulshrestha
The original version of this article unfortunately contained a mistake. In pages 5 and 6, a unit was misprinted. Please see below necessary corrections.
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The impact of long-term regional air mass patterns on nutrient precipitation chemistry and nutrient deposition within a United States grassland ecosystem J. Atmos. Chem. (IF 1.521) Pub Date : 2018-12-11 Matt T. Trentman
Changes in the frequency of precipitation as a result of a changing climate, as well as anthropogenic induced deposition of nitrogen (N), both have the potential to alter grassland productivity and diversity. Central U.S. weather patterns are dominated by three major air mass trajectories including regional sources from the Gulf of Mexico (marine tropical, Mt), the Pacific Northwest (mild pacific,
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Atmospheric abundance of HULIS during wintertime in Indo-Gangetic Plain: impact of biomass burning emissions J. Atmos. Chem. (IF 1.521) Pub Date : 2018-11-17 Varun Kumar, Prashant Rajput, Anubha Goel
This study reports for the first-time the ambient concentrations of HULIS mass (HULIS-OM, Humic-like substances) and HULIS-C (carbon) in PM10 (particulate matter with aerodynamic diameter ≤ 10 μm) from the Indo-Gangetic Plain (IGP at Kanpur, wintertime). HULIS extraction followed by purification and isolation protocol with methanol: acetonitrile (1:1 v/v) on HLB (Hydrophilic-Lipophilic Balanced) cartridge
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Trace ambient levels of particulate mercury and its sources at a rural site near Delhi J. Atmos. Chem. (IF 1.521) Pub Date : 2018-07-24 Anita Kumari, Umesh Kulshrestha
Atmospheric particle-bound mercury levels were measured in PM10 aerosols (HgP) at a rural site (Mahasar, Haryana) during winter 2014–15 and summer 2015. The PM10 HgP was determined by using Differential Pulse Anodic Stripping Voltammetry through standard addition methods while the trace metals were determined by using an Atomic Absorption Spectroscopy. The mass concentrations of HgP varied from 591
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Effect of solubility limitation on hygroscopic growth and cloud drop activation of SOA particles produced from traffic exhausts J. Atmos. Chem. (IF 1.521) Pub Date : 2018-11-23 C. Wittbom, A. C. Eriksson, J. Rissler, P. Roldin, E. Z. Nordin, S. Sjogren, P. T. Nilsson, E. Swietlicki, J. Pagels, B. Svenningsson
Hygroscopicity measurements of secondary organic aerosol (SOA) particles often show inconsistent results between the supersaturated and subsaturated regimes, with higher activity as cloud condensation nucleus (CCN) than indicated by hygroscopic growth. In this study, we have investigated the discrepancy between the two regimes in the Lund University (LU) smog chamber. Various anthropogenic SOA were
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Biogenic hydrogen sulphide emissions and non-sea sulfate aerosols over the Indian Sundarban mangrove forest J. Atmos. Chem. (IF 1.521) Pub Date : 2018-11-10 D. Ganguly, R. Ray, N. Majumdar, C. Chowdhury, T. K. Jana
Temporal variations in atmospheric hydrogen sulphide concentrations and its biosphere-atmosphere exchanges were studied in the World’s largest mangrove ecosystem, Sundarbans, India. The results were used to understand the possible contribution of H2S fluxes in the formation of atmospheric aerosol of different size classes (e.g. accumulation, nucleation and coarse mode). The mixing ratio of hydrogen
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Seasonal and annual trends of carbonaceous species of PM10 over a megacity Delhi, India during 2010–2017 J. Atmos. Chem. (IF 1.521) Pub Date : 2018-11-06 S. K. Sharma, T. K. Mandal, A. Sharma, Saraswati, Srishti Jain
PM10 samples were collected to characterize the seasonal and annual trends of carbonaceous content in PM10 at an urban site of megacity Delhi, India from January 2010 to December 2017. Organic carbon (OC) and elemental carbon (EC) concentrations were quantified by thermal-optical transmission (TOT) method of PM10 samples collected at Delhi. The average concentrations of PM10, OC, EC and TCA (total
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Size-resolved characteristics of inorganic ionic species in atmospheric aerosols at a regional background site on the South African Highveld J. Atmos. Chem. (IF 1.521) Pub Date : 2018-10-24 Andrew D. Venter, Pieter G. van Zyl, Johan P. Beukes, Jan-Stefan Swartz, Miroslav Josipovic, Ville Vakkari, Lauri Laakso, Markku Kulmala
Aerosols consist of organic and inorganic species, and the composition and concentration of these species depends on their sources, chemical transformation and sinks. In this study an assessment of major inorganic ions determined in three aerosol particle size ranges collected for 1 year at Welgegund in South Africa was conducted. SO42− and ammonium (NH4+) dominated the PM1 size fraction, while SO42−
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A comprehensive study on the surface chemistry of particulate matter collected from Jeddah, Saudi Arabia J. Atmos. Chem. (IF 1.521) Pub Date : 2018-07-06 Asim Jilani, Syed Zajif Hussain, Mohd Hafiz Dzarfan Othman, Usama Zulfiqar, Muhammad Bilal Shakoor, Imran Ullah Khan, Javed Iqbal, Attieh A. Al-Ghamdi, Ahmed Alshahrie
In this work, the X-ray Photoelectron Spectroscopy (XPS) technique is utilized to analyze the surface chemical composition of particulate matter (PM) which was collected from various locations at Jeddah, Saudi Arabia. The main elements found on the surface of PM are carbon (C), oxygen (O) and silicon (Si) with combined percentage of 89.4–94.9 while traces of nitrogen (N), calcium (Ca), aluminum (Al)
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Insignificant impact of freezing and compaction on iron solubility in natural snow J. Atmos. Chem. (IF 1.521) Pub Date : 2018-03-19 Pami Mukherjee, Mihaela Glamoclija, Yuan Gao
To explore the freezing effect on iron (Fe) solubility in natural environments, especially in Polar regions, event based freshly fallen snow samples were collected at Newark, New Jersey on the US East Coast for two consecutive winter seasons (2014–2015 and 2015–2016). These samples were analyzed for the concentrations of soluble iron (Fesol) using UV-Vis Spectroscopy and filterable iron (Fefil) and
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Re-examine the APEC blue in Beijing 2014 J. Atmos. Chem. (IF 1.521) Pub Date : 2018-01-23 Ting Wang, Pucai Wang, François Hendrick, Michel Van Roozendael
APEC blue was coined to describe the impact of short-term curbs on air pollution during the Asian-Pacific Economic Cooperation (APEC) Summit organized in Beijing in November 2014 and has been a hot topic among both general public and scientific sector in China. The consensus that gaseous agents NO2 and SO2 are greatly reduced in response to the control and restriction strategies implemented during
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Carbonaceous and inorganic species in PM10 during wintertime over Giridih, Jharkhand (India) J. Atmos. Chem. (IF 1.521) Pub Date : 2017-11-21 S. K. Sharma, T. K. Mandal, A. K. De, N. C. Deb, Srishti Jain, Mohit Saxena, S. Pal, A. K. Choudhuri, Saraswati
Ambient concentrations of organic carbon (OC), elemental carbon (EC) and water soluble inorganic ionic components (WSIC) of PM10 were studied at Giridih, Jharkhand, a sub-urban site near the Indo Gangatic Plain (IGP) of India during two consecutive winter seasons (November 2011–February 2012 and November 2012–February 2013). The abundance of carbonaceous and water soluble inorganic species of PM10
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Characterization of brown carbon constituents of benzene secondary organic aerosol aged with ammonia J. Atmos. Chem. (IF 1.521) Pub Date : 2017-10-29 Mingqiang Huang, Jun Xu, Shunyou Cai, Xingqiang Liu, Weixiong Zhao, Changjin Hu, Xuejun Gu, Li Fang, Weijun Zhang
Nitrogen-containing organic compounds (NOC) formed from secondary organic aerosols (SOA) age via reaction with reduced nitrogen species are a vital class of brown carbon compounds. NOC compounds from ammonia (NH3) gas-aging of benzene SOA were investigated in present study, and the experiments were performed by irradiating benzene/CH3ONO/NO/NH3 air mixtures in a home-made smog chamber. The particulate
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The role of precursor emissions on ground level ozone concentration during summer season in Poland J. Atmos. Chem. (IF 1.521) Pub Date : 2017-10-23 Kinga Wałaszek, Maciej Kryza, Małgorzata Werner
Three online coupled chemical transport model simulations were analyzed for three summer months of 2015 in Poland. One of them was run with default emission inventory, the other two with NOx and VOC emissions reduced by 30%, respectively. Obtained ozone concentrations were evaluated with data from air quality measurement stations and ozone sensitivity to precursor emissions was estimated by ozone concentration
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Water-soluble inorganic ions of size-differentiated atmospheric particles from a suburban site of Mexico City J. Atmos. Chem. (IF 1.521) Pub Date : 2017-08-21 Telma Castro, Oscar Peralta, Dara Salcedo, José Santos, María I. Saavedra, María L. Espinoza, Alejandro Salcido, Ana-Teresa Celada-Murillo, Susana Carreón-Sierra, Harry Álvarez-Ospina, Giovanni Carabali, Valter Barrera, Sasha Madronich
During the MILAGRO campaign, March 2006, eight-stage cut impactors were used to sample atmospheric particles at Tecámac (T1 supersite), towards the northeast edge of the Mexico City Metropolitan Area, collecting fresh local emissions and aged pollutants produced in Mexico City. Particle samples were analyzed to determine total mass concentrations of Ca2+, Mg2+, NH4 +, K+, Cl−, SO4 2−, and NO3 −. Average
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Long-term high-frequency measurements of dibromomethane in the atmosphere at algae-rich and algae-poor coastal sites J. Atmos. Chem. (IF 1.521) Pub Date : 2017-08-16 Yoko Yokouchi, Takuya Saito, Hitoshi Mukai
Dibromomethane (CH2Br2), a natural stratospheric ozone depleting substance, is mostly emitted from the ocean, but the relative importance of coastal (or macroalgae) and open ocean emissions is unknown. We made long-term high-frequency measurements of CH2Br2 concentrations at two remote coastal sites in Japan, on the subtropical Hateruma Island (poor in macroalgae) and at Cape Ochiishi (rich in macroalgae)
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Atmospheric hydroperoxides measured over a rural site in central Japan during spring: helicopter-borne measurements J. Atmos. Chem. (IF 1.521) Pub Date : 2017-08-04 Koichi Watanabe, Chinatsu Yachi, Xiao Jing Song, Saori Kakuyama, Miyuki Nishibe, Sheng Jun Jin
Measurements of the concentrations of H2O2 and methyl hydroperoxide (MHP), O3, and SO2 over Imizu City, Toyama Prefecture, Japan were performed in March using a helicopter. H2O2 concentrations were higher at an altitude of approximately 2,400 m (8,000 ft). The H2O2 concentrations (< 0.8 ppb) in the spring were much lower than those observed during the summer observations. MHP was also higher in the
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Concentrations of metallic elements in long-range-transported aerosols measured simultaneously at three coastal sites in China and Japan J. Atmos. Chem. (IF 1.521) Pub Date : 2017-06-07 Kojiro Shimada, Xiaoyang Yang, Yushi Araki, Ayako Yoshino, Akinori Takami, Xuan Chen, Fan Meng, Shiro Hatakeyama
To determine the effects of long-range transport of aerosols from an upwind area in East Asia to a downwind area in Japan, we chemically analyzed aerosols collected simultaneously on Tuoji Island (Shandong Province, China), Fukue Island (Nagasaki Prefecture, Japan), and Cape Hedo (Okinawa Prefecture, Japan). We focused on changes in the metallic composition of PM2.5 aerosols during long-range transport
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Chemical characteristics of atmospheric bulk deposition in a semi-rural area of the Po Valley (Italy) J. Atmos. Chem. (IF 1.521) Pub Date : 2017-05-10 Laura Tositti, Linda Pieri, Erika Brattich, Silvia Parmeggiani, Francesca Ventura
This study provides an analysis of a five-year time series chemical composition of the bulk deposition (2009–2013), collected within a farm surrounded by industrial and urban settlements in a semi-rural area of the Po Valley, with the aim of characterizing potential emission sources affecting precipitation composition at the site. Most monitoring efforts in this region, recognized as one of the most
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Measurements of PM10 ions and trace gases with the online system MARGA at the research station Melpitz in Germany – A five-year study J. Atmos. Chem. (IF 1.521) Pub Date : 2017-04-29 B. Stieger, G. Spindler, B. Fahlbusch, K. Müller, A. Grüner, L. Poulain, L. Thöni, E. Seitler, M. Wallasch, H. Herrmann
An hourly quantification of inorganic water-soluble PM10 ions and corresponding trace gases was performed using the Monitor for AeRosols and Gases in ambient Air (MARGA) at the TROPOS research site in Melpitz, Germany. The data availability amounts to over 80% for the five-year measurement period from 2010 to 2014. Comparisons were performed for the evaluation of the MARGA, resulting in coefficients
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Exchange fluxes of VOSCs between rice paddy fields and the atmosphere in the oasis of arid area in Xinjiang, China J. Atmos. Chem. (IF 1.521) Pub Date : 2017-04-28 Wei Wen Jing, Ning Li, Xiao Fang Li, De Qiang Li, Li Ling Wang
Investigations about VOSCs (volatile organic sulfur compounds) have been received increasing attention for their significant contribution to the nonvolcanic background sulfate layer in the stratosphere and the earth’s radiation balance and as a potential tool to understand the carbon budget. In this study, COS and CS2 were always recorded throughout the entire rice cultivation season of 2014. COS fluxes
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Evaluation of an automated EA-IRMS method for total carbon analysis of atmospheric aerosol at HEKAL J. Atmos. Chem. (IF 1.521) Pub Date : 2017-04-24 István Major, Brigitta Gyökös, Marianna Túri, István Futó, Ágnes Filep, András Hoffer, Enikő Furu, A. J. Timothy Jull, Mihály Molnár
Comprehensive atmospheric studies have demonstrated that carbonaceous particles are one of the main components of atmospheric aerosols over Europe. The aim of our study was to establish an automated elemental analyser interfaced to a stable isotope mass spectrometer (EA-IRMS) method at the Hertelendi Laboratory of Environmental Studies (HEKAL), as a suitable method of quantification of total carbon
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Measurements of atmospheric hydroperoxides at a rural site in central Japan J. Atmos. Chem. (IF 1.521) Pub Date : 2017-04-14 Koichi Watanabe, Chinatsu Yachi, Xiao Jing Song, Saori Kakuyama, Miyuki Nishibe, Serina Michigami
Measurements of hydroperoxides (H2O2 and MHP) at ground level were made from 2012 to 2015 in Imizu City, Toyama Prefecture in central Japan. H2O2 and MHP concentrations ranged from 0.01 to 3.5 ppb and from below the level of detection (< 0.01 ppb) to 1.4 ppb, respectively. The concentrations of H2O2 and MHP were high in the summer and low in the winter. The H2O2 concentration was at its maximum in
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Atmospheric chemistry of hydrogen fluoride J. Atmos. Chem. (IF 1.521) Pub Date : 2017-04-11 Meng-Dawn Cheng
Although a large volume of monitoring and computer simulation data exist for global coverage of HF, study of HF in the troposphere is still limited to industry whose primary interest is the safety and risk assessment of HF release because it is a toxic gas. There is very limited information on atmospheric chemistry, emission sources, and the behavior of HF in the environment. We provide a comprehensive
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Altitude profile of the OH radical complex with water in Earth’s atmosphere: a quantum mechanical approach J. Atmos. Chem. (IF 1.521) Pub Date : 2017-01-03 David Voglozin, Paul Cooper
The hydroxyl radical (OH) is important in both tropospheric and stratospheric chemical processes that occur in Earth’s atmosphere. The OH radical can also strongly hydrogen-bond to form complexes with other atmospheric constituents, like water molecules. Consequently, there is potential for altered reaction dynamics/kinetics as a result of this complexation. Without direct measurements of the abundances
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Future emissions of marine halogenated very-short lived substances under climate change J. Atmos. Chem. (IF 1.521) Pub Date : 2016-12-29 Franziska Ziska, Birgit Quack, Susann Tegtmeier, Irene Stemmler, Kirstin Krüger
Halogenated Very Short-lived Substances (VSLS), such as bromoform, dibromomethane and methyl iodide, are naturally produced in the oceans and are involved in ozone depletion in the troposphere and the stratosphere. The effect of climate change on the oceanic emissions of these compounds is not well quantified. Based on present-day observed global oceanic and atmospheric concentrations, and historic
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Halogenation processes linked to red wood ant nests (Formica spp.) and tectonics J. Atmos. Chem. (IF 1.521) Pub Date : 2016-12-27 Gabriele M. Berberich, Tobias Sattler, Dietrich Klimetzek, Simon A. Benk, Martin B. Berberich, Daniela Polag, Heinz Friedrich Schöler, Elliot Atlas
We investigated and evaluated the occurrence of fault zone tracer gases (CO2, He, Rn), volatile organohalogens (CH3Cl, CHCl3, CHBr3), alkanes and limonene in soil and nest gases of red wood ants (RWA) in comparison to ambient air, in a seismically active area. In this new approach, we compared RWA-free areas to RWA-areas by combining different investigation and analytical methods. In soil gas, the
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Size distribution and chemical composition of summer aerosols over Southern Ocean and the Antarctic region J. Atmos. Chem. (IF 1.521) Pub Date : 2016-12-16 K.B. Budhavant, P. S. P. Rao, P. D. Safai
The size distribution of atmospheric aerosols together with their composition, sources and sinks, is a key element in understanding aerosol effects on the Earth’s climate. Aerosol particle size distribution and chemical composition were measured over the Southern Ocean and at Antarctic region during December 2009–March 2010. Aerosol samples were collected using multi-stage low volume Air Sampler, and
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Trans-boundary and in-country transport of air pollutants observed in Kobe, Japan by high frequent filter pack sampling method J. Atmos. Chem. (IF 1.521) Pub Date : 2016-12-13 Masahide Aikawa, Takatoshi Hiraki, Yosuke Horie, Ryouhei Nakatsubo, Chisato Matsumura, Hitoshi Mukai
The seasonal intensive sampling of gases and particulate matter in ambient air was conducted at the site established in urban area of Japan to study the seasonal difference of the temporal variation of gases and particulate matter concentrations in urban atmosphere as well as to illustrate the different transport regimes that impacts air pollutants. The sample was collected by the four-stage filter-pack
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Emission estimates of methyl chloride from industrial sources in China based on high frequency atmospheric observations J. Atmos. Chem. (IF 1.521) Pub Date : 2016-12-13 Shanlan Li, Mi-Kyung Park, Chun Ok Jo, Sunyoung Park
Methyl Chloride (CH3Cl) is a chlorine-containing trace gas in the atmosphere contributing significantly to stratospheric ozone depletion (Carpenter et al. 2014). In the global CH3Cl budget, the atmospheric CH3Cl emissions is predominantly maintained by natural sources, of which magnitudes have been relatively well-constrained. However, significant uncertainties still remain in the CH3Cl emission strengths
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