采用气相色谱-质谱法对超声波萃取与索氏萃取丙烯腈-丁二烯-苯乙烯(ABS)中四溴双酚A进行了比较研究。超声波萃取的最优试验条件:溶剂为二氯甲烷,温度为30 ℃,时间为60 min;索氏萃取的最优试验条件:溶剂为甲苯,回流次数为每小时4次,时间为12 h。四溴双酚A的质量浓度在1.00~100 mg·L-1范围内与其峰面积呈线性关系。索氏萃取的萃取率高于超声波萃取的萃取率,索氏萃取的相对标准偏差(n=6)为2.1%,加标回收率在80.4%~85.7%之间。

GC-MS was applied to the comparative study of ultrasonic and soxhlet extraction methods for tetrabromobisphenol A (TBBPA) in acrylonitrile butadiene styrene copolymers (ABS). The optimized conditions of ultrasonic extraction were as follows: solvent was dichloromethane; temperature was 30 ℃; time was 60 min. The optimized conditions of soxhlet extraction were: solvent was toluene, reflow cycles were 4 times per hour for 12 h. Linear relationship between values of peak area and mass concentration of TBBPA was kept in the range of 1.00-100 mg·L-1. Extraction rate of soxhlet extraction was higher than that of ultrasonic extraction. RSD (n=6) of soxhlet extraction found was 2.1%, and values of recovery found by standard addition method were in the range of 80.4%-85.7%.