PVC木塑家具中邻苯二甲酸酯增塑剂检测方法研究

Research on the method for determination of phthalate esters in PVC wood plastic furniture

比较研究了超声萃取法和传统索氏提取法测定聚氯乙烯(PVC)木塑家具中6种邻苯二甲酸酯增塑剂(PAEs)的分析方法。通过正交试验研究提取溶剂、样品质量和提取时间3个因素的显著性,并优化了参数。在优化条件下,索氏提取法和超声萃取法的平均回收率均大于80%,精密度均小于10%。以邻苯二甲酸二丁酯(DBP)和邻苯二甲酸二异壬酯(DINP)为例,通过F检验和T检验显著性统计,两种处理方法的精密度和准确度不存在差异。相对于传统的索氏提取法,超声萃取法具有操作简单、溶剂用量少和省时的有点,可以较好的应用于PVC木塑家具产品及相关木塑材料中6种PAEs增塑剂检测。

The method for determination of six phthalate esters in polyvinyl chloride（PVC） wood plas- tic composites was established by using Soxhlet extraction and ultrasonic extraction in this work. The effects of three factors including solvent, sample quality and extraction time were studied by orthogonal test, and the parameters were optimized. The average recovery rates of Soxhlet extraction and ultrasonic extraction were more than 80%, and the precisions were less than 10%. The experiment showed that there was no difference in precision and accuracy between the two methods. The ultrasonic extraction has advantges of simplicity and less solvent consumption.