GC-MS Determination of Residual Organochlorine and Synthetic Pyrethroid Insecticides in Fatty Wool
摘 要
采用气相色谱-质谱联用法测定含脂羊毛中有机氯和拟除虫菊酯杀虫剂的残留量.样品经二氧化碳超临界萃取仪萃取后,所得提取液先后经过自动凝胶渗透色谱仪和Bond Elut Si固相萃取柱净化浓缩,所得洗脱液经氮气吹干后定容至1.0 mL,于气相色谱和气相色谱-质谱分析仪测定,外标法定量.11种有机氯和5种拟除虫菊酯杀虫剂的工作曲线呈较好线性关系,检出限(3S/N)在0.022~0.32 mg·kg-1之间,测定下限(10S/N)在0.073~1.07 mg·kg-1之间.在3个标准加入水平下进行了回收率和精密度试验,所得回收率在74.8%~135.2%之间,相对标准偏差(n=6)小于10%.
Abstract
Hyphenation of GC and MS was applied to the determinations of residual organochlorine and synthetic pyrethroid insecticides in fatty wool.The sample was extracted by carbon dioxide-supercritical fluid extraction,the extract obtained was purified and concentrated by automatic gel permeation chromatography and solid phase extraction with Bond Elut Si SPE column.The eluate from the SPE column was evaporated by N2-blowing and made up to 1.0 mL,which was used for GC-MS analysis.External standard method was adopted in the determination.Working curves of the 11 organochlorine insecticides and 5 pyrethroid insecticides were found to have good linearity.Limits of detection (3S/N) and lower limits of determination (10S/N) for the insecticides were found in range of 0.022-0.32 mg·kg-1 and 0.073-1.07 mg·kg-1,respectively.Tests for recovery and precision were made by standard addition method at 3 different concentration levels,values of recovery found were in the range of 74.8%-135.2% and values of RSD′s (n=6) were less than 10%.
中图分类号 O657.7
所属栏目 工作简报
基金项目 上海出入境检验检疫局科研资助项目(HK023-2007)
收稿日期 2008/3/8
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备注赵洁(1979-),女,河南新乡人,硕士,主要从事纺织品分析测试相关的研究.
引用该论文: ZHAO Jie,WANG Heng,CHEN Qing-dong,CHEN Zhi-wei,HUANG Fa-ming,HUANG Zhong-rong. GC-MS Determination of Residual Organochlorine and Synthetic Pyrethroid Insecticides in Fatty Wool[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2009, 45(5): 552~554
赵洁,王恒,陈庆东,陈志伟,黄发明,黄忠荣. 气相色谱-质谱法测定含脂羊毛中有机氯和拟除虫菊酯杀虫剂残留量[J]. 理化检验-化学分册, 2009, 45(5): 552~554
被引情况:
【1】覃东立,牟振波,陈中祥,赵吉伟, "凝胶渗透色谱净化-气相色谱-质谱法测定水产品中拟除虫菊酯类农药",理化检验-化学分册 48, 1094-1096(2012)
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参考文献
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【3】MOLDOVAN Z,JOVER E,BAYONA J M,et al.Gas chromatographic and mass spectrometric methods for the characterization of long-chain fatty acids application to wool wax extracts[J].Anal Chim Acta,2002,465:359.
【4】DISERENS H.Simplified extraction cleanup for multiresidue determination of pesticides in lanolin[J].J Assoc off Anal Chem,1989,72(6):991.
【5】JONES F W.Supercritical fluid extraction as a cleanup technique for gas chromatography analysis of pesticides in wool wax[J].J Agric Food Chem,1997,45(7):2569.
【6】HEIKES D L,CRAUN J C.Rapid multiresidue procedure for the determination of pesticides in anhydrous lanolin and lanolin-containing pharmaceutical preparations utilizing gel permeation chromatography cleanup with gas chromatography and mass spectrometric techniques[J].J Agric Food Chem,1992,40(9):1586.
【7】LPEZ-MESAS M,CRESPI M,BRACH M,et al.Clean-up of a pesticide-lanolin mixture by gel permeation chromatography[J].J Chromatogr Sci,2000,38(12):551.
【8】廖传华,黄振仁.超临界CO2流体萃取技术[M].北京:化学工业出版社,2004:26-27.
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