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建立了液相色谱-串联质谱法快速测定电子电气产品中全氟辛酸(PFOA)和全氟辛烷磺酸(PFOS)的分析方法。采用加速溶剂萃取提取样品中PFOA和PFOS,二氯甲烷作溶剂,外标法定量,LC-MS/MS分析时间1 m in。电子电气产品中PFOS不同加标质量分数(0.25,0.75和1.25 mg/kg)的平均回收率分别为:91.6%、92.8%和94.7%;PFOA不同加标质量分数(0.50,1.25和2.25 mg/kg)的平均回收率分别为:90.1%、91.5%和93.4%;PFOS和PFOA测定的相对标准偏差分别为2.8%~3.3%和4.2%~4.9%。测定了金属框架涂层和氟聚合物材料中PFOS和PFOA的含量,PFOS含量分别为16μg/m2和0.89%,PFOA未检出
A method for the rapid determination of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) in electrical and electronic products by liquid chromatography-tandem mass spectrometry was established. Samples were extracted with accelerated solvent extraction of PFOA and PFOS, dichloromethane as a solvent, external standard quantitative LC-MS / MS analysis time 1 m in. The average recoveries of PFOS at different spiked levels (0.25,0.75 and 1.25 mg / kg) in electrical and electronic products were 91.6%, 92.8% and 94.7%, respectively. The different spiked levels of PFOA (0.50, 1.25 and 2.25 mg / kg) were 90.1%, 91.5% and 93.4%, respectively. The relative standard deviations of PFOS and PFOA were 2.8% -3.3% and 4.2% -4.9%, respectively. The content of PFOS and PFOA in the metal frame coating and the fluoropolymer materials were measured, the PFOS contents were 16μg / m2 and 0.89%, respectively. The PFOA undetectable