用索氏提取-气相色谱法测定PVC管材中的邻苯二甲酸酯类增塑剂  

Determination of Phthalic Acid Esters in PVC Pipe by Soxhlet Extraction-Gas Chromatography

作　　者：綦敬帅 宋吉英[1] 史衍玺[2] 吕海涛[1] 

机构地区：[1]青岛农业大学化学与药学院,山东青岛266109 [2]青岛农业大学资源与环境学院,山东青岛266109

出　　处：《塑料科技》2014年第2期100-105,共6页Plastics Science and Technology

基　　金：山东省"黄蓝两区"建设专项资金(2011-黄-19)

摘　　要：建立了索氏提取-气相色谱法测定聚氯乙烯（PVC）箨管材中6种国家限量邻苯二甲酸酯（PAEs）类增塑剂的方法。采用索氏提取作为前处理提取手段，通过正交试验对样品中PAEs类增塑剂的提取条件进行系统优化。结果表明：在一定范围内，该方法具有良好线性关系，相关系数在0．997-0．999之间，检测限为0．15-0．60mg／kg，平均回收率84．2％-109％，相对标准偏差为1．33％-8．60％。方法简单高效，具有良好的重现性和灵敏度，适用于PVC等管材中PAEs类增塑剂的分析检测。A method was established for the determination of phthalate plasticizers in PVC or other plastic materials pipe by soxhlet extraction-gas chromatography. Samples were extracted by soxhlet extraction with acetone and ethyl acetate as the solvent, and the extraction conditions were optimized by orthogonal analysis. The results show that in a certain range, the method has good linear relationship, the correlation coefficients are between 0.997 and 0.999, the recoveries are 84.2%-109%, the relative standard deviations are 1.33%-8.60%, and the detection limits are 0.15-0.60 mg/kg. This method is simple, sensitive and repeatable, which is suitable for the determination of phthalate plasticizers in PVC.

关 键 词：聚氯乙烯 管材 正交试验 邻苯二甲酸酯 气相色谱 索氏提取 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] O657.71[理学—分析化学]