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Influence of Tropical Weather and Northeasterly Air Mass on Carbonaceous Aerosol in the Southern Malay Peninsula
ACS Earth and Space Chemistry ( IF 2.9 ) Pub Date : 2021-02-17 , DOI: 10.1021/acsearthspacechem.0c00319 Hamidah Suradi 1 , Md. F. Khan 1, 2 , Nor F. Alias 1 , Syazwani Mustapa Kama Shah 1 , Sumiani Yusoff 3 , Yusuke Fujii 4 , Murnira Othman 5 , Mohd T. Latif 6
ACS Earth and Space Chemistry ( IF 2.9 ) Pub Date : 2021-02-17 , DOI: 10.1021/acsearthspacechem.0c00319 Hamidah Suradi 1 , Md. F. Khan 1, 2 , Nor F. Alias 1 , Syazwani Mustapa Kama Shah 1 , Sumiani Yusoff 3 , Yusuke Fujii 4 , Murnira Othman 5 , Mohd T. Latif 6
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Carbonaceous aerosols play a key role in climate modification and exert a deleterious effect on human health. Thus, this study aimed to determine the thermally derived carbonaceous fraction in particulate matter (PM)2.5 from the Southern Malay Peninsula, a tropical area in Malaysia, during January 2019 to March 2019. PM2.5 was captured on quartz filters using a high-volume sampler on a 24 h basis. Eight of the carbon fractions were measured using the thermal optical reflectance method. Carbonaceous aerosol was thoroughly characterized by estimating elemental carbon (EC), organic carbon (OC), total carbon, secondary OC, soot-EC, and char-EC to determine the mechanism of emission from fossil fuel combustion, biomass, and secondary origins. The effect of local meteorological factors and air mass transport on the change in the light-absorbing aerosol fraction was also examined. Secondary organic sources and primary sources emitted 46 and 54% of OC, respectively. The estimated char-EC in this study was 10-fold higher than soot-EC, indicating that biomass burning and coal combustion were the predominant routes of EC emission, whereas petrol or diesel engines were the less predominant generators of soot-EC. Trajectory modeling showed that biomass fires in the Indochina region were the potential origin of carbonaceous aerosols transported from the northeasterly direction.
中文翻译：
热带天气和东北气团对马来半岛南部碳质气溶胶的影响
碳质气溶胶在气候变化中起关键作用，并对人体健康产生有害影响。因此，本研究旨在确定在2019年1月至2019年3月期间，来自马来西亚热带地区马来半岛南部的颗粒物（PM）2.5中的热衍生碳含量。PM 2.5在24小时内使用大容量采样器在石英过滤器上捕获了H2O。使用热光反射法测量了八个碳部分。通过估算元素碳（EC），有机碳（OC），总碳，次级OC，碳烟EC和炭化EC来彻底表征碳质气溶胶，以确定化石燃料燃烧，生物质和次级起源的排放机理。还研究了当地气象因素和空气质量传输对吸光气溶胶含量变化的影响。次级有机源和初级源分别排放了46％和54％的OC。在这项研究中，估计的char-EC值比烟灰EC值高10倍，表明生物质燃烧和煤炭燃烧是EC排放的主要途径，而汽油机或柴油机则是烟灰EC的主要来源。轨迹模型表明，印度支那地区的生物质火灾是从东北方向运走的碳质气溶胶的潜在起源。
更新日期：2021-03-18
中文翻译：
热带天气和东北气团对马来半岛南部碳质气溶胶的影响
碳质气溶胶在气候变化中起关键作用，并对人体健康产生有害影响。因此，本研究旨在确定在2019年1月至2019年3月期间，来自马来西亚热带地区马来半岛南部的颗粒物（PM）2.5中的热衍生碳含量。PM 2.5在24小时内使用大容量采样器在石英过滤器上捕获了H2O。使用热光反射法测量了八个碳部分。通过估算元素碳（EC），有机碳（OC），总碳，次级OC，碳烟EC和炭化EC来彻底表征碳质气溶胶，以确定化石燃料燃烧，生物质和次级起源的排放机理。还研究了当地气象因素和空气质量传输对吸光气溶胶含量变化的影响。次级有机源和初级源分别排放了46％和54％的OC。在这项研究中，估计的char-EC值比烟灰EC值高10倍，表明生物质燃烧和煤炭燃烧是EC排放的主要途径，而汽油机或柴油机则是烟灰EC的主要来源。轨迹模型表明，印度支那地区的生物质火灾是从东北方向运走的碳质气溶胶的潜在起源。
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