PVC玩具和儿童用品中6种限用邻苯二甲酸酯类增塑剂的同时测定

Simultaneous determination of six kinds of restricted phthalates in PVC toys and childcare articles

提出了气相色谱-质谱联用同时测定PVC玩具和儿童用品中6种限用增塑剂的方法，以乙酸乙酯为溶剂，采用微波萃取法提取PVC玩具和儿童用品中6种限用邻苯二甲酸酯类增塑剂，以DHP为内标进行定量。该方法平均回收率为91．15％～98．72％，RSD为1．98％～4．47％，检测限（S／N=5）分别为0．5mg／L（DBP、BBP、DEHP、DNOP）和10mg／L（DINP、DIDP）。

A method was proposed to simultaneously determine the content of six kinds of restricted plasticizers in PVC toys and childcare articles by gas chromatography- mass spectrometer with DHP as the internal standard. The restricted phthalate plasticizers in PVC toys and childcare articles was microwave extracted using ethyl acetate as the solvent. The average recovery varied from 91.15% to 98.72% ,the relative standard derivation ranged from 1.98% to 4.47%. The limit of detection was 0.5 mg/L for DBP,BBP, DEHP and DNOP and 10 mg/L for DINP and DIDP（at S/N = 5）.