%0 Journal Article
%T Distributions of Dissolved and Particulate Amino Compounds in Atmospheric Aerosols at Qingdao<br>青岛大气气溶胶中氨基化合物的分布特征
%A SHI Jin-hui
%A FAN De-guo
%A HAN Jing
%A ZHANG Yun
%A QI Jian-hua
%A GAO Hui-wang
%A <br>石金辉
%A 范得国
%A 韩静
%A 张云
%A 祁建华
%A 高会旺
%J 环境科学
%D 2010
%I 
%X Amino compounds is one class of organic nitrogen compounds that has been measured extensively in aerosols and rainwater. These compounds in atmospheric deposition might have a potential role in marine ecosystem since it can be directly utilizable sources of nitrogen for microorganisms and plants. 66 total suspended particles samples were collected at Qingdao from January to December in 2008. Concentrations of dissolved amino compounds (DAC) and particulate amino compounds (PAC) were analyzed using precolumn fluorescence derivatization with o-phthaldialdehyde and N-isobutyryl-L-cysteine, combined with reverse-phase high performance liquid chromatography. Concentrations of DAC in Qingdao aerosols ranged from 2.4 to 40.9 nmol·m-3, with highest values occurring in spring, followed in summer and lowest values in autumn and winter. PAC concentration were from 0.7 to 76.1 nmol·m-3, presenting the seasonal trend of spring > winter > autumn > summer. Compositions of amino compounds in aerosols varied seasonally. By classifying air mass back trajectories during each sampling period, the aerosol samples in Qingdao were mainly influenced by northerly continental source, southerly continental source and marine source. Concentrations of DAC and PAC were found highest in the samples influenced by southerly continental source, followed by northerly continental source and lowest in the samples by marine source. Compositions of amino compounds were also influenced by the sources. Contributions of protein-type to total amino compounds were highest in the aerosols from marine source and lowest in the aerosols from southerly continental source.
%K amino compounds
%K organic nitrogen
%K aerosol
%K Qingdao
%K the marginal seas of China<br>氨基化合物
%K 有机氮
%K 气溶胶
%K 青岛
%K 中国近海
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=A20BCCC64531D6090CD6FC17079C43BF&yid=140ECF96957D60B2&vid=4AD960B5AD2D111A&iid=708DD6B15D2464E8&sid=FD68F48068D96EC3&eid=B0540F6E3E4A706D&journal_id=0250-3301&journal_name=环境科学&referenced_num=1&reference_num=0