固相萃取-高效液相色谱-串联质谱法测定尿液中西玛津
Physical Testing and Chemical Analysis Part B:Chemical Analysis（2020）
Abstract
尿液样品经Waters Oasis HLB LP柱萃取,乙腈洗脱,采用高效液相色谱-串联质谱法测定洗脱液中西玛津的含量.以Eclipse Plus C18色谱柱为固定相,以70％(体积分数)乙腈溶液为流动相,串联质谱分析中采用电喷雾离子源正离子模式和多反应监测模式.西玛津的质量浓度在500.0μg·L-1以内与其对应的峰面积呈线性关系,检出限(3s/k)为0.91μg·L-1,测定下限(10s/k)为3.03μg·L-1.以空白样品为基体进行加标回收试验,所得回收率为80.7％～84.0％,测定值的日内相对标准偏差(n=6)和日间相对标准偏差(n=4)分别为1.8％～2.9％,6.8％～9.1％.
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