%0 Journal Article
%T Sampling and determination of carbonyls in stack gas
%A Dai Tian-you
%A Wang Qin-hui
%A Wei Fu-sheng
%A Tan Pei-gong
%A Liu Jin
%A <br>Dai Tian you
%A Wang Qin hui
%A Wei Fu sheng
%A Tan Pei gong
%A Liu Jin Qingdao
%J 环境科学学报(英文版)
%D 1999
%I 
%X The GC determination of aldehydes and ketones in stack gas is reported. The stack gas is collected with the dust sampler by isokinetic sampling technique, 2,4-dinitrophenylhydrazine in acidic solution is used to absorb aldehydes and ketones in stack gas specifically, to form their hydrazones, which are determined by GC with a capillary column of SE-54. The GC system can separate nine hydrazones of carbonyls interested with constant recovery rates of 94%-97%, giving lowest detectable limits of 0.05-1.0 ng. The standard gas of carbonyls are determined by this method with relative errors of -5%--10%, percent coefficients of variation within 5%, and spiking recovery rates of 93%-97%. As an application of the method, the carbonyl pollutants are determined in stack gas samples in a chemical plant.
%K aldehyde
%K ketone
%K 2
%K 4-dinitrophenylhydrazine absorption solution
%K stack gas
%K gas chromatography<br>aldehyde
%K ketone
%K 2
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=20F93BA8115648B6&yid=B914830F5B1D1078&vid=708DD6B15D2464E8&iid=CA4FD0336C81A37A&sid=B6DA1AC076E37400&eid=014B591DF029732F&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=0