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介绍了高温燃烧-微库仑法(氯元素分析仪)测定氯化石蜡中的氯含量。氯化石蜡经对二甲苯溶解/稀释后直接进样分析。使用不同浓度的氯标样,建立电位积分面积-浓度标准曲线,对三种型号氯化石蜡-42、氯化石蜡-52、氯化石蜡-70进行测定,结果分别为43.8%、52.9%、68.8%;RSD范围0.5~0.8%(n=9),回收率在93.2~97.0%。该方法是测定氯化石蜡中氯含量又一快速、准确的方法。
The high temperature combustion - microcoulometry (chlorine elemental analyzer) is introduced to determine the content of chlorine in chlorinated paraffin. Chlorinated paraffin after p-xylene dissolved / diluted direct injection analysis. Using different concentrations of chlorine standard samples, the potential integral area-concentration standard curve was established. The three models of chlorinated paraffin-42, chlorinated paraffin-52, and chlorinated paraffin-70 were determined. The results were 43.8%, 52.9% 68.8%. RSD ranged from 0.5% to 0.8% (n = 9). The recoveries ranged from 93.2% to 97.0%. This method is another fast and accurate method for the determination of chlorine in chlorinated paraffin.