建立了气相色谱-氮磷检测器同时检测玉米中12种三嗪类除草剂(西玛通、西玛津、阿特拉津、扑灭津、特丁通、特丁津、环丙津、西草净、扑草净、特丁净、甲氧丙净、环嗪酮)残留量的方法.玉米样品用乙腈萃取,强阳离子交换(SCX)固相萃取柱净化后,用DB-5弹性石英毛细管柱(30 m×0.25 mm i.d.×0.25 μm)分离样品,氮磷检测器测定.12种三嗪类除草剂在0.01～2.0 mg/L范围内线性关系关系良好,相关系数均大于0.998;最低检测限为0.01 mg/kg;添加回收率为84.0%～106.8%;相对标准偏差为0.9%～4.7%.
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