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 Armenia (Amberd), which is designated as EMEP (European Monitoring and Evaluation Programme) station. Laboratory analyses were performed by ion chromatography system and UV spectrophotometer. MAKESENS programme was used for detecting and estimating trends in the time series of annual average values of atmospheric concentrations. Long term trends of atmospheric concentrations of nitrogen and sulfur compounds at the Amberd air quality monitoring station were calculated and discussed for the investigated decade. The trends significance levels for all parameters are calculated. It is identified that there are no significant trends for all explored paramenters, except reduced sulfur in aerosols. Possible emission and deposition changes of nitrogen and sulfur compounds in Armenia were explored in order to identify possible transboundary air pollution and its main sources. Deposition data was estimated by EMEP MSC-W model calculations. Investigation of transboundary fluxes of nitrogen and sulfur compounds displays main receptor areas and contributors. Analysis of seasonality in atmospheric pollutants shows strong seasonal behaviour of the measured parameters in wet deposition - higher concentrations during summertime compared with the wintertime. Atmospheric concentrations of nitrate and ammonium ions are lower during summertime compared with the wintertime, while ammonia has low concentrations during wintertime. Atmospheric nitric acid, sulfate ion, sulfur dioxide and nitrogen dioxide revel no significant seasonality.

中文翻译：

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亚美尼亚 EMEP 场地湿沉降和大气中氮和硫化合物浓度的长期趋势

本文介绍了 2008-2018 年亚美尼亚大气中气态硝酸、二氧化氮、二氧化硫、氨和硝酸根、铵、硫酸根离子以及湿沉降中硝酸根、铵根和硫酸根离子的变化趋势。大气中的氮和硫浓度通过从亚美尼亚背景监测站 (Amberd) 的过滤器组采样器和玻璃烧结过滤器获得的数据进行监测，该站被指定为 EMEP（欧洲监测和评估计划）站。实验室分析采用离子色谱系统和紫外分光光度计进行。MAKESENS 程序用于检测和估计大气浓度年平均值的时间序列趋势。在调查的十年中，计算并讨论了 Amberd 空气质量监测站大气中氮和硫化合物浓度的长期趋势。计算所有参数的趋势显着性水平。确定所有探索的参数没有显着趋势，除了气溶胶中的硫减少。探索了亚美尼亚氮和硫化合物可能的排放和沉积变化，以确定可能的跨界空气污染及其主要来源。沉积数据是通过 EMEP MSC-W 模型计算得出的。氮和硫化合物跨界通量的调查显示了主要的受体区域和贡献者。对大气污染物季节性的分析表明，湿沉降测量参数具有强烈的季节性行为——与冬季相比，夏季浓度更高。与冬季相比，夏季大气中硝酸盐和铵离子的浓度较低，而冬季氨的浓度较低。大气硝酸、硫酸根离子、二氧化硫和二氧化氮没有明显的季节性。