建立了超高效液相色谱-串联质谱测定唾液中甲基苯丙胺、吗啡、O6-单乙酰吗啡等3种毒品及其代谢物的方法.以乙腈为提取液沉淀蛋白质法提取,采用基质提取溶液配制标准溶液制作定量曲线.采用BEH HILIC超高效液相色谱柱对待测毒品进行分离;采用电喷雾离子源正离子(ESI+)模式和多反应监测(MRM)模式进行质谱分析,以被测毒品的同位素内标进行定量.结果表明,在10、20、50、100μg/L 4个添加水平下的回收率范围为(68.7±6.5)% ~ (110.8±4.6)%,日内精密度小于16.5%,日间精密度小于16.3%;3种毒品的检出限(LOD,以信噪比(S/N) >3计)和定量限(LOQ,以S/N> 10计)分别为0.02 ~0.05 μg/L和0.1~0.2μg/L.方法快速、简便、定量准确、灵敏度高;在1h之内即可对采集的唾液样品进行毒品定性和定量分析,可用于涉嫌吸毒者的快速认定.
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