建立了猪组织中9种β-兴奋剂(克伦特罗、莱克多巴胺、沙丁胺醇、利托君、特布他林、班布特罗、妥布特罗、西马特罗和异舒普林)多残留的液相色谱-四极杆/线性离子阱串联质谱(QTrap LC-MS/MS)检测方法.样品经β-葡萄糖醛苷酶/芳基硫酸酯酶酶解提取,液液萃取净化,以乙腈-甲酸水溶液为流动相,经C18柱分离后用QTrap LC-MS/MS进行多反应监测(MRM)、信息相关采集(IDA)、增强子离子扫描(EPI)和谱库检索分析.9种β-兴奋剂的线性范围为0.1 ~ 50.0 μg/L,线性关系良好(r>0.99);样品中9种目标物在0.5、1.0和5.0μg/kg添加水平下的回收率为72.0% ~ 95.1%,相对标准偏差为3.1%~12.1%;方法检出限为0.1~ 0.2 μg/kg.实际样品检测结果表明,本方法可实现猪组织样本中β-兴奋剂残留量的灵敏、准确的定性和定量分析.
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