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超高效液相色谱_串联质谱法同时测定玉米_花生_麦仁中的9种真菌毒素.pdf

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360 2010, Vol. 31, No. 20 食品科学 ※分析检测 超高效液相色谱-串联质谱法同时测定玉米、 花生、麦仁中的9种真菌毒素 1 2 3 1 2 , 廉慧锋 ,赵笑天 ,王蓉珍 ,宋 欢 ,林勤保 * ( 1.山西出入境检验检疫局技术中心,山西太原 030024 ;2 .山西大学应用化学研究所,山西太原 030006 ; 3.山西省分析测试中心,山西太原 030006) 摘 要:建立玉米、花生、麦仁中9 种真菌毒素的超高效液相色谱- 串联质谱确证方法。样品用甲醇- 水溶液和磷 酸缓冲液(PBS)双重提取后直接过真菌毒素免疫亲和柱净化;氮气吹干后用的乙腈- 水溶液(50:50 ,V/ V)定容,超高 + - 效液相色谱- 串联质谱(LC-M S-MS)测定,电喷雾正、负离子(E SI 、E SI ) 多反应模式监测。结果表明,样品中 真菌毒素在0.1~400 μg/kg 范围内时与其峰面积呈良好线性关系,定量限为0.1~20 μg/kg ,3 个加标水平下平均回收 率为59.5% ~118.8% ,相对标准偏差为2 .4% ~12 .8% ,符合痕量分析的要求。 关键词:超高效液相色谱- 串联质谱;真菌毒素;玉米;花生;麦仁 Simultaneous Determination of 9 Kinds of Mycotoxins in Maize, Peanut and Wheat by Ultra-high Performance Liquid Chromatography-Tandem Mass Spectrometry 1 2 3 1 2, LIAN Hui-feng ,ZHAO Xiao-tian ,WANG Rong-zhen ,SON G Hu an ,LIN Qin-b ao * (1. Shanxi Entry-exit In spection and Quarantine Bureau , Taiyuan 030024, China ; 2. Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China ; 3. Shanxi Analyse and Test Center, Taiyuan 030006, China) Abstract:A simultaneous determination method for nine kinds of mycotoxins in maize, peanut and wheat was developed using ultra-high performance liquid chromatography-tendem mass spectrometry (UPLC-MS/MS). Samples were sequentially ex- tracted with PBS solution followed by 70% methanol, and then the extracts were pooled and cleaned up
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