Determination of 16 insect growth regulators in edible Chinese traditional herbs by liquid chromatography electrospray tandem mass spectrometry

文献类型： 外文期刊

第一作者： Qian, Mingrong

作者： Qian, Mingrong;Wu, Liqin;Zhang, Hu;Xu, Mingfei;Li, Rui;Wang, Xiangyun;Sun, Caixia

作者机构：

关键词： Benzoylphenylurea;Diacylhydrazine;Herbs;High-performance liquid chromatography-tandem mass spectrometry;Insect growth regulators;Residue analysis

期刊名称：ANALYTICAL AND BIOANALYTICAL CHEMISTRY （ 影响因子：4.142； 五年影响因子：3.863 ）

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收录情况： SCI

摘要： A new sensitive multiresidue liquid chromatography-tandem mass spectrometry (LC-MS/MS) analytical method for the determination of 16 insect growth regulator (IGR) residues-RH-5849 (1,2-dibenzoyl-1-tert-butylhydrazine), halofenozide, methoxyfenozide, chromafenozide, fufenozide, tebufenozide, diflubenzuron, chlorbenzuron, triflumuron, hexaflumuron, novaluron, lufenuron, teflubenzuron, flucycloxuron, flufenoxuron, and chlorfluazuron-in herbs (Perilla frutescens, flos chrysanthemi, lily bulbs, and ginger) has been developed. After the herbs had been extracted with acetonitrile, a combined graphitized nonporous carbon/aminopropyl (ENVI-Carb/LC-NH _2) cartridge and a Florisil cartridge were used to clean up the extracts. LC-MS/MS was performed in multiple reaction monitoring mode with two specific precursor ion-product ion transitions per IGR to confirm and quantitate the residues in herbs. Quantitation was performed on the basis of matrix-matched calibrations. The method showed excellent linearity (r ~2∈>∈0.99) and precision (relative standard deviations of 13.6 or lower) for all the target insecticides. The limits of quantitation were 0.6-10 μg kg ~(-1) for the 16 insecticides in the four herbs. The average recoveries, measured at three concentrations (0.01, 0.1, 1 mg kg ~(-1)), were in the range 74.8-105.3%. The method was satisfactorily applied for the analysis of 60 herb samples (Perilla frutescens, flos chrysanthemi, lily bulbs, and ginger). Hexaflumuron was detected at concentrations of 0.029 and 0.051 mg kg ~(-1) in Perilla frutescens. [Figure not available: see fulltext.]

分类号： O65

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