摘要
采用气相色谱-质谱法测定发泡聚苯乙烯制品中6种邻苯二甲酸酯的含量。样品(0.250 0g)以二氯甲烷为溶剂,用乙腈(15mL)沉淀聚合物后取其溶液,用DB-5MS毛细管色谱柱分离。在质谱分析中,用选择离子扫描模式下测定。6种邻苯二甲酸酯在一定的质量浓度范围内与其峰面积呈线性关系,方法的测定下限(10S/N)在0.13~4.61mg·kg^(-1)之间。以空白样品为基体进行加标回收试验,所得回收率在85.8%~102%之间,测定值的相对标准偏差(n=6)在1.3%~4.6%之间。
CA2-MS was applied to the determination of 6 phthalates in foamed polystyrene products. The sample （0. 250 0 g） was dissolved with dichloromethane and polymer was separated by precipitation with 15 mL of acetonitrile. The analytes were separated on DB-5MS capillary chromatographic column, and determined by MS under selected ion monitoring mode. Linear relationships between values of peak area and mass concentration of the 6 phthalates were kept in definite ranges, with lower limits of determination （10S/N） in the range of 0. 13-- 4. 61 mg· kg^-1. On the base of blank sample, test for recovery was made by standard addition method; values of recovery found were in the range of 85.8%-102%, with RSDrs （n=6） in the range of 1.3%-4. 6%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2017年第3期305-308,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
质检总局科研项目(2015IK212
2014IK266)
