| 甲基化处理气相色谱-质谱法同时检测大米中12种酸性除草剂 |
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| 引用本文： | 赵守成,董振霖,卫锋,蒋景阳,姜文凤,谢波. 甲基化处理气相色谱-质谱法同时检测大米中12种酸性除草剂[J]. 质谱学报, 2005, 26(4): 206-206 |
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| 作者姓名： | 赵守成 董振霖 卫锋 蒋景阳 姜文凤 谢波 |
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| 作者单位： | 1. 辽宁出入境检验检疫局技术中心,辽宁,大连,116610
2. 大连理工大学,辽宁,大连,116024 |
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| 摘 要： | 实验采用丙酮酸性水溶液(150∶20,体积比)提取试样中农药残留物,提取液用乙酸乙酯液液分配、凝胶渗透色谱仪(GPC)净化后,用重氮甲烷乙醚溶液衍生化,用气相色谱-质谱(GC/MS)选择离子监测模式(SIM)内标法(IS)测定,分离色谱柱为DB-5MS。10种农药的回收率≥80%;相对标准偏差≤10%;最低检测限0.01~0.05 mg/kg。
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| 关 键 词： | 酸性除草剂 衍生化 气相色谱-质谱(GC/MS) 凝胶渗透色谱(GPC) |
| 文章编号： | 1004-2997(2005)04-206-05 |
| 收稿时间： | 2005-02-24 |
| 修稿时间： | 2005-02-24 |
Simultaneous Determination of Twelve Acid Herbicides in Rice by Gas Chromatography-Mass Spectrometry |
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| ZHAO Shou-cheng,DONG Zhen-lin,WEI Feng,JIANG Jing-yang,JIANG Wen-feng,XIE Bo. Simultaneous Determination of Twelve Acid Herbicides in Rice by Gas Chromatography-Mass Spectrometry[J]. Journal of Chinese Mass Spectrometry Society, 2005, 26(4): 206-206 |
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| Authors: | ZHAO Shou-cheng DONG Zhen-lin WEI Feng JIANG Jing-yang JIANG Wen-feng XIE Bo |
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| Abstract: | A method of multiresidue simultaneous determination of twelve acid herbicides in rice was described.The method involved extraction using acetone and acid water solution(150∶20,V/V),and the herbicides isolated on the DB-5MS and derivatization with dizomethane were determined with internal standard(IS) method by selected-ion monitoring(SIM) mode using gas chromatography-mass spectrometry(GC/MS).The extraction was partitioned with acetic ester,cleaning up with gel permeation chromatography(GPC).Recoveries of ten herbicides were more than 80%,and relative standard deviation(RSD) was less than 10%.The determination limit range: 0.01-0.05 mg/kg. |
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| Keywords: | acid herbicide derivatization gas chromatography-mass spectrometry(GC/MS) gel permeation chromatography(GPC) |
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