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文章利用甲苯/甲醇(10∶1,体积比)溶液微波辅助萃取塑料电子电气样品,用正己烷沉淀萃取液中的高聚物,采用液相色谱对四溴双酚A进行定量测定。对微波萃取条件、沉淀试剂用量、检测波长、流动相等分析条件进行了优化,并进行了线性关系、回收率、精密度等试验。结果表明:方法线性范围0.1～50mg/L,相关系数为0.9999,检测低限为20mg/kg,回收率在90.6%～94.5%之间,相对标准偏差小于8%。
Articles Microwave assisted extraction of plastic electrical and electronic samples with toluene / methanol (10: 1, volume ratio) solution, the precipitation of the polymer with hexane, liquid chromatography tetrabromobisphenol A quantitative determination. Microwave extraction conditions, the amount of precipitating reagents, detection wavelength, mobile phase analysis conditions were optimized, and the linear relationship, recovery, precision and other tests. The results showed that the linear range was 0.1-50 mg / L, the correlation coefficient was 0.9999, the detection limit was 20 mg / kg, the recovery was between 90.6% and 94.5%, and the relative standard deviation was less than 8%.