Measurements and Characteristics of Nitrogen-Containing Compounds in Atmospheric Particulate Matter in Beijing, China |
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| Authors: | Fengkui Duan Xiande Liu Kebin He Shuping Dong |
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| Affiliation: | (1) Department of Environmental Science and Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China;(2) Chinese Research Academy of Environmental Sciences, Beijing, 100012, People’s Republic of China;(3) National Research Center for Environmental Analysis and Measurements, Beijing, 100029, People’s Republic of China |
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| Abstract: | The total nitrogen (TN) and water-soluble nitrogenous ions were determined by using CHN Elemental Analyzer and ion chromatography method, respectively, from November 24, 1998 to February 12, 1999 in Beijing. The average concentrations of TN, NH4 + and NO3 − were 10.62 μg N m−3, 6.67 μg m−3 and 10.01 μg m−3, respectively. The total inorganic nitrogen (IN) calculated from NH4 + and NO3 − was 7.45 μg N m−3, accounting for 70% of TN, i.e., 30% of TN existed as organic nitrogen form (ON). The correlation between ON and other pollution tracers showed that, coal combustion, biomass burning, soil humic matter and secondary formation were the important sources of ON in particulate matter in Beijing. |
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| Keywords: | Particulate matter CHN elemental analysis Total nitrogen Organic nitrogen |
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