%0 Journal Article
%T Determination of cyflufenamid residue in carrots by gas chromatography-negative chemical ionization mass spectrometry<br>气相色谱-负化学离子源质谱法检测胡萝卜中残留的环氟菌胺
%A YANG Wenquan
%A SHEN Weijian
%A ZHAO Zengyun
%A XU Jinzhong
%A SHEN Chongyu
%A WU Bin
%A <br>杨雯筌
%A 沈伟健
%A 赵增运
%A 徐锦忠
%A 沈崇钰
%A 吴斌
%J 色谱
%D 2008
%I 
%X A method was developed for the determination of cyflufenamid residue in carrots by solid phase extraction-gas chromatography-negative chemical ionization mass spectrometry (SPE-GC-NCI/MS). Cyflufenamid residue was extracted with ethyl acetate from carrots. The extract was cleaned-up by an active carbon SPE column connected to a neutral alumina SPE column. The analysis was carried out by the GC-NCI/MS with selected ion monitoring mode. The recoveries of cyflufenamid in carrot samples were in the range from 74.9% to 94.6% at four spiked levels, 0.005, 0.01, 0.02, 0.04 mg/kg, and the relative standard deviations (RSD) were less than 9.7% for inter-days. The linearity of the method was good in the range from 10 to 1000 ng/mL, and the limit of detection (LOD) was 0.001 mg/kg, and the limit of quantitation (LOQ) was 0.005 mg/kg. The method is selective without interference and is suitable for the determination and confirmation of cyflufenamid residue in carrots.
%K solid phase extraction (SPE)
%K gas chromatography-mass spectrometry (GC-MS)
%K negative chemical ionization (NCI)
%K cyflufenamid
%K carrot<br>固相萃取
%K 气相色谱-质谱联用
%K 负化学离子源
%K 环氟菌胺
%K 胡萝卜
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=5E3B68958EEB378C736BDDAD350F504C&yid=67289AFF6305E306&vid=96C778EE049EE47D&iid=E158A972A605785F&sid=E3D3D8D1B650AE1E&eid=652E7E360EBE3082&journal_id=1000-8713&journal_name=色谱&referenced_num=2&reference_num=10