【摘要】 文章建立了一种高效液相色谱-串联质谱法测定毛织物中氯菊酯防虫蛀剂含量的方法。毛织物中的氯菊酯经甲醇浸泡、超声提取、过滤后,利用液相色谱分离氯菊酯异构体,采用质谱-选择离子监测法对其作定量测定。顺、反氯菊酯的标准曲线线性相关系数均大于0.999 2,线性范围为0.01~1μg/m L。该方法对顺式氯菊酯的检出限为0.707 ng/m L、反式氯菊酯为1.645 ng/m L。在2 mg/kg、20 mg/kg的2个添加水平范围内的平均回收率在92.6%~96.9%之间,相对标准偏差(n=7)在0.2%~7.6%之间。与高效液相色谱法相比杂质干扰小,准确性高,检测限更低。更多还原

【Abstract】 A method has been developed for the determination of permethrin in the wool fabric by HPLC / MS / SIM. Permethrin on the wool fabric is soaked and ultrasonic extracted by methanol. After filtration,permethrin isomers were separated and qualitative and quantitative analysis was carried out by ESI / MS / MS with selected ion monitoring in the positive ion mode. The correlation coefficients of cis- and trans-permethrin were great than 0. 999 2 in the range of 0. 01 ~ 1 μg / m L. The limits of detection( LODs) for cis-permethrin was 0. 707 ng /m L and trans-permethrin 1. 645 ng /m L. The mean recoveries at the spiked level of 2、20 mg / kg were 92. 6% ~ 96. 9%,with the relative standard deviation( n = 7)between 0. 2% ~ 7. 6%. The method is accurate, simple, rapid and adapts to the inspection of permethrin in wool fabric.更多还原