文献类型： 外文期刊

作者： He Hongmei ¹ ; Wu Liqin ¹ ; Zhang Hu ¹ ; Zhu Jiahong ¹ ; Xie Lei ¹ ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Standard Agr Prod, Hangzhou 310021, Peoples R China

关键词： benzoylurea insecticides;residue analysis;high performance liquid chromatography

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.134； 五年影响因子：0.909 ）

ISSN： 0253-3820

年卷期： 2006 年 34 卷 10 期

页码：

收录情况： SCI

摘要： One-step extraction and high performance liquid chromatography (HPLC) with ultraviolet detection have been developed and validated for the determination of seven kinds of benzoylurea insecticides (diflubenzuron, chlorbenzuron, triflumuron, hexaflumuion, teflubenzuron, flufenoxuron and chlorfluazuron) residues in vegetable matrices including Chinese cabbage, tomato, cabbage and cucumber. The extraction efficiency of ethyl acetate and acetonitrile different cleanup methods including C, solid phase extraction ( SPE) cartridge, hydrophilic-lipophilic balance (HLB) SPE cartridge, activated carbon, florisil and Vario GPC and separation by HPLC are extensively investigated. The extraction recoveries of the seven kinds of benzoylurea insecticides are between 80% and 10% for spiked level of 0.05-1.0 mg/kg. The limits of quantification are ranged from 0.02 to 0.05 mg/kg for the seven pesticides (SIN = 10 There are good linear correlations between the peak area's and concentrations of the seven kinds of benzoylurea insecticides, the line ar range is 0.02-1.5 mg/L and the correlation coefficients are above 0.999.