%0 Journal Article
%T Determination of lambda-cyhalothrin residue in tea and soil using gas chromatography<br>气相色谱法测定茶叶及土壤中的高效氯氟氰菊酯残留量
%A CHEN Linglong
%A CHEN Jiuxing
%A MA Ming
%A CHEN Lihua
%A YANG Hui
%A ZHANG Guiqun
%A <br>陈玲珑
%A 陈九星
%A 马铭
%A 陈力华
%A 杨辉
%A 张贵群
%J 色谱
%D 2010
%I 
%X A gas chromatographic (GC) method was established for the determination of lambda-cyhalothrin residue in tea and soil. Tea and soil samples were extracted with hexane, separated by capillary column and determined by gas chromatography-electron capture detector (GC-ECD). The average recoveries of lambda-cyhalothrin in tea and soil were 89.0%-94.1% and 89.8%-94.7% , respectively at the spiking levels of 0.02 to 2.00 mg/kg. The corresponding relative standard deviations (RSDs, n=5) were 3.0%-4.9% and 2.5%-4.2%, respectively. The limit of detection (S/N=3) was 0.002 mg/kg for lambda-cyhalothrin. The degradations of 2.5% lambda-cyhalothrin microemulsion in tea and soil in Changsha, Hunan were investigated and the degradation equations were y=3.1996e-0.3394x and y=0.1224e-0.1036x with the correlation coefficients of 0.9956 and 0.9247, respectively. The half-lives of lambda-cyhalothrin in tea and soil were 2.04 days and 6.69 days, respectively.
%K gas chromatography (GC)
%K lambda-cyhalothrin
%K residue
%K tea
%K soil<br>气相色谱法
%K 高效氯氟氰菊酯
%K 残留
%K 茶叶
%K 土壤
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=B5049E72D81ECD9CA31CA84BD4145148&yid=140ECF96957D60B2&vid=D3E34374A0D77D7F&iid=5D311CA918CA9A03&sid=92DE343A8428AA81&eid=45D68DF69BA881EC&journal_id=1000-8713&journal_name=色谱&referenced_num=0&reference_num=15