| UPLC-MRM法测定饲料中的三聚氰胺 |
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| 引用本文： | 赵玉娟,李如华,周文芳,于建国. UPLC-MRM法测定饲料中的三聚氰胺[J]. 分析试验室, 2009, 28(8) |
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| 作者姓名： | 赵玉娟 李如华 周文芳 于建国 |
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| 作者单位： | 中国林科院森环森保所,国家林业局森林生态环境与保护重点实验室,北京,100091;农业部奶及奶制品质量监督检验测试中心,北京,100094 |
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| 摘 要： | 提出了一种UPLC-MRM测定饲料中微量三聚氰胺的分析方法. 饲料经10 g/L三氯乙酸溶液提取和22 g/L乙酸铅溶液沉淀蛋白质, 过混合型阳离子交换柱(MCX)纯化, 离心后用0.45 μm滤膜过滤, 用超高效液相色谱-质谱-质谱联用仪(UPLC-MS-MS)分析测定, 以三聚氰胺母离子126.9 (m/z)和子离子67.5与84.6 (m/z)定性、定量目标物. 饲料样品加标回收率(n=6)为84.5%, 检测限0.01 μg/L, 相对偏差(RSD) 6.5%.
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| 关 键 词： | 三聚氰胺 饲料 液-质-质联用仪 |
Determination of melamine residues in feed by UPLC-MRM with HPLC |
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| ZHAO Yu-juan,LI Ru-hua,ZHOU Wen-fang,YU Jian-guo. Determination of melamine residues in feed by UPLC-MRM with HPLC[J]. Chinese Journal of Analysis Laboratory, 2009, 28(8) |
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| Authors: | ZHAO Yu-juan LI Ru-hua ZHOU Wen-fang YU Jian-guo |
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| Affiliation: | 1.Research Institute of Forestry Environment and Protection;CAF;Key Laboratory of Forestry Ecology and Environment;State Forestry Administration;Beijing 100091;2.Minstry of Agriculture Milk and Dairy Quality Supvision and Inspection Evaluation Center;Beijing 100094 |
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| Abstract: | A UPLC-MRM method is presented for the quantitative determination and confirmation of melamine residues in feed.Feed was extracted with 10 g/L trifluoroacetic acid.Protein was precipitated by 22 g/L lead acetate and cleaned-up using oasis MCX solid phase extraction cartridges.Extracts were analyzed by UPLC-MRM in positive ion mode.The parent ion for melamine is m/z 126.9.Two daughter ions were monitored at m/z 84.2 and 67.5 for quantification and confirmation.The recovery of melamine from fortified samples(... |
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| Keywords: | Melamine UPLC-MRM Feed |
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