%0 Journal Article
%T Study on the Trends of Atmospheric CFCs<br>大气中氯氟烃类物质浓度变化的研究
%A Chen Limin
%A Duan Yang
%A Yue Zhiwei
%A Wu Libo
%A Pan Xiangmin
%A <br>陈立民
%A 段杨
%A 乐致威
%A 吴力波
%A 潘相敏
%J 环境科学
%D 1999
%I 
%X The method of detecting atmospheric CFCs using gas chromatograph(ECD detector) was established.Through the procedure,the method of cryogenic dehydration and concentrating was introduced.The CFCs concentration of Shanghai clean air was detected and was compared with that of The University of Tokyo,Japan.The result shows that,since 1997,the atmospheric concentrations of CFC-11 and CFC-12 have decreased.Shanghai's emission of CFCs is in a low level compared with the developed countries.
%K CFCs
%K Gas Chromatography
%K atmospheric determination
%K atmospheric chemistry<br>氯氟烃
%K 气相色谱法
%K 大气化学
%K 大气监测
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=15585629E16468BB&yid=B914830F5B1D1078&vid=A04140E723CB732E&iid=CA4FD0336C81A37A&sid=DB817633AA4F79B9&eid=771469D9D58C34FF&journal_id=0250-3301&journal_name=环境科学&referenced_num=8&reference_num=5