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首页> 外文会议>Collection of Academic Papers(2001) >Multi-residue analysis of avermectins in swine liver by immunoaffinity extraction and liquid chromatography-mass spectrometry
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Multi-residue analysis of avermectins in swine liver by immunoaffinity extraction and liquid chromatography-mass spectrometry

机译：免疫亲和萃取和液相色谱-质谱联用分析猪肝中阿维菌素的多残留

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摘要

A multi-residue LC-MS method was developed to determine avermectin residues in swine liver. Abamectin and ivermectin (22.23-dihydroabamectin) were extracted, and cleaned up by immunoaffinty columns with immobilized anti-avermectin polyclonal antibodies. The cleaned samples were separated by high-performance liquid chromatography (HPLC) with a C_s column and determined by negative-ion atmospheric pressure chemical ionization (APCI) mass spectrometry (MS) using selective ion monitoring (SIM) of [M-H]~+. Recoveries of abamectin and ivermectin from fortified samples at 5-100 μg kg~(-1) levels ranged from 74 to 94% and from 65 to 87%, respectively. The limits of detection were 5 μg of abamectin or ivermectin in 1 kg sample.
机译：开发了一种多残留LC-MS方法来测定猪肝中的阿维菌素残留。提取阿维菌素和伊维菌素（22.23-dihydroabamectin），并通过固定有抗阿维菌素多克隆抗体的免疫亲和柱进行纯化。清洁的样品通过带有C_s柱的高效液相色谱（HPLC）分离，并使用[M-H]〜+的选择性离子监测（SIM）通过负离子大气压化学电离（APCI）质谱（MS）测定。强化样品中阿维菌素和伊维菌素在5-100μgkg〜（-1）水平下的回收率分别为74％至94％和65％至87％。检测限为1 kg样品中5μg的阿维菌素或伊维菌素。

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