氯气分析方法探讨

Discussion on the analytical method for chlorine gas

分析了使用w(KI) =1 0 %或w(Na2 S2 O3) =5%吸收液的原氯气分析方法中存在的弊端及造成分析结果出现偏差的原因 ,通过多次试验开发了使用w(Na2 S2 O3) =0 .2 %、w(NaOH) =1 %新吸收液的改进分析方法 ,确认其分析准确度高 ,可节约药品用量 ,减少了仪器破损率 ,经济效益可观。

Problems existing in the original analytical method of chlorine gas, which uses w (KI)=10% or w (Na 2S 2O 3)=5% as absorbing solution, are analyzed as well as reasons for its error of measurement. Through expeximents, an improved method is found, which uses w (Na 2S 2O 3)= 0.2% and w (NaOH)=1% as absorbing solution and has high analytical accuracy, lower reagent consumption,lower equipment damage, and good economic effect.