摘要
提出了气相色谱-质谱法测定塑料中四溴双酚A含量的方法。样品经乙酸乙酯超声提取20min后,氮气吹干。用甲苯5.0mL溶解残渣,经乙酸酐衍生化后,所得衍生产物过DB-5MS色谱柱分离,电子轰击离子源质谱检测。四溴双酚A的质量浓度在0.1～100mg.L-1范围内与其峰面积呈线性关系。以ABS和PS塑料样品为基体,进行加标回收试验,回收率在分别为97.0%和94.2%,相对标准偏差(n=5)小于6.5%。
GC-MS was applied to the determination of tetrabromobisphenol A in plastics. The sample was extracted with ethyl acetate for 20 min, and concentrated to dryness by N2-blowing. The residue was dissolved with 5.0 mL of mcthylhenzene, and derivatized with acetic anhydride. The derivatized products were separated on DB- 5MS column and El source was used in MS. I.inear relationship between values of peak area and mass concentration of tetrahromobisphenol A was kept in the range of 0. 1--100 mg· L^-1. Tests for recovery were made hy standard addition method with 2 samples of plastics （ABS and PS） as matrixes; values of recovery found were 97. 0% for ABS and 94.2% for PS with RSI）＇s （n=5） less than 6.5%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2012年第12期1438-1440,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
宁波市自然科学基金项目(No.2011A610083)
