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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Determining lipophilic pyrethroids and chlorinated hydrocarbons in fortified ground beef using ion-trap mass spectrometry.
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Determining lipophilic pyrethroids and chlorinated hydrocarbons in fortified ground beef using ion-trap mass spectrometry.

机译：使用离子阱质谱法测定强化碎牛肉中的亲脂性拟除虫菊酯和氯代烃。

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摘要

A rapid procedure was developed as an improvement for the analysis of lipophilic insecticides in meat. The number of physical and chemical manipulations required of previous methodologies to separate pesticide analytes from fat was minimized, and the number of solvent evaporations has been reduced to one. Removal of fat from the meat extracts was accomplished with an iso-octane/acetonitrile partition and Florisil column cleanup. Recoveries of the organochlorine pesticides, lindane, p,p'-DDE, p,p'-DDT, heptachlor epoxide and dieldrin, and the pyrethroids, bifenthrin, permethrin, cypermethrin, fluvalinate and deltamethrin, from fortified meat samples ranged from 59 to 82% with typical relative standard deviations of 10% except for p,p'-DDT, which gave lower, more variable recoveries probably due to degradation. Limits of detection of the pesticides in ground beef ranged from 2 ng/g for bifenthrin and p,p'-DDE to 24 ng/g for heptachlor epoxide.
机译：开发了一种快速的程序，作为肉类中亲脂性杀虫剂分析的一种改进。以前的方法从脂肪中分离农药分析物所需的物理和化学操作数量已降至最低，并且溶剂蒸发的数量已减少至一个。用异辛烷/乙腈分配器和Florisil柱净化可完成从肉提取物中去除脂肪。从强化肉类样品中回收的有机氯农药，林丹，对苯二酚，对苯二酚，对苯二酚，滴滴涕，七氯环氧化物和狄氏剂以及拟除虫菊酯，联苯菊酯，氯菊酯，氯氰菊酯，氟伐林酸酯和溴氰菊酯的回收率范围为59至82 ％，典型的相对标准偏差为10％（p，p'-DDT除外），p，p'-DDT可能由于降解而导致较低的可变回收率。碎牛肉中农药的检出限范围为联苯菊酯和p，p'-DDE的2 ng / g到七氯环氧化物的24 ng / g。

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