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液相色谱-高分辨质谱测定贝类中的4种贝毒素及16种兽药残留

Journal of Instrumental Analysis(2014)

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Abstract
建立了贝类组织中米氏裸甲藻贝毒素(Gymnodimine,GYM)、螺环内酯毒素(Spirolides,SPX1)、大田软骨酸贝毒素(Okadaic acid,OA-C)、蛤毒素(Pectenotoxins,PTX2)4种腹泻性贝类毒素、氯霉素、氟甲砜霉素以及14种磺胺类药物的液相色谱-高分辨质谱分析方法.样品采用甲醇提取,正己烷去除脂肪,乙酸乙酯反萃取,ODS粉分散固相萃取净化,经Agilent ZORBAX SB-C18色谱柱(3.0 mm×100 mm,1.8 μm)分离,高分辨质谱仪进行检测.结果表明,各化合物在一定的质量浓度范围内线性良好,相关系数(r)均大于0.99.GYM,SPX1,OA-C,PTX24种腹泻性贝类毒素的定量下限分别为0.5,0.1,2.0,0.5μg/kg,各化合物在低、中、高3个浓度加标水平下的回收率为70.1%~105.8%,相对标准偏差(RSD)为10.1%~14.8%.该方法具有简单、快速、灵敏等特点,能满足贝类产品中贝类毒素、抗生素的检测要求.
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Key words
shellfish,liquid chromatography-high resolution mass spectrometry,shellfish biotoxin,chloroamphenicol,florfenicol,sulfonamide,QuEChERS
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