建立了鸡肉中氯羟吡啶、二硝托胺、4,4’-二硝基均二苯脲(尼卡巴嗪代谢物)、磺胺氯吡嗪、磺胺喹(噁)啉、地克珠利、妥曲珠利、妥曲珠利砜和妥曲珠利亚砜9种化学合成类抗球虫药多残留的高效液相色谱-串联质谱分析方法.样品采用2%乙酸酸化的乙腈/二甲亚砜(4∶1,v/v)提取,150 mg二甲基十八碳硅烷粉(octadecylsilyl,ODS)、100mg石墨化炭黑(graphitized carbon black,GCB)和100 mg弗罗里硅土(Florisil)吸附剂分散固相萃取净化,经Hypersil GOLD C18色谱柱(150 mm×4.6 mm,5μm)分离,电喷雾串联四极杆质谱多反应离子监测方式测定.9种分析物在20~150 μg/kg范围内线性关系良好,相关系数均大于 0.995.样品基质中9种分析物在20、50和150μg/kg加标水平下,平均回收率为81.5% ~ 103.6%,相对标准偏差为4.5%~14.5%.该方法稳定、可靠,可满足鸡肉中化学合成类抗球虫药多残留的检测与确证.
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