离子色谱法测定氯气中的微量二氧化氯  

Determination of Trace Chlorine Dioxide in Chlorine Gas Ion Chromatography

作　　者：邵红才 徐华军 余乐 王玉芬 SHAO hongcai;XU huajun;YU le;WANG yufen(Zhejiang Quhua Fluorine Chemical Co.LTD.;Zhejiang Qingke Environmental Protection Technology Co.Ltd.:Quzhou,Zhejiang 324004)

机构地区：[1]浙江衢化氟化学有限公司 [2]浙江清科环保科技有限公司,浙江衢州324000

出　　处：《化工生产与技术》2023年第1期29-30,I0004,共3页Chemical Production and Technology

摘　　要：为了监控原料氯气中微量二氧化氯含量,研究采用碱吸收反应进行前处理,调整反应液pH为8.0~9.0,以离子色谱法检测反应物含量间接得到氯气中微量二氧化氯含量的方法。结果表明,得到ClO_(2)^(-)检出限为质量浓度为0.16 mg/L,ClO_(2)^(-)加标回收率在99.5%~102.2%,精密度为2.06%。该方法具有准确度高、重现性好,检出限低、成本较低、步骤简单等特点。In order to monitor the content of trace chlorine dioxide in raw material chlorine gas,the detection method was studied.The alkali absorption reaction was used for pretreatment.After the reaction,the pH of the reaction solution was adjusted to 8.0~9.0,and the content of the reactants was detected by ion chromatography to indirectly obtain the content of trace chlorine dioxide in chlorine gas.The results showed that the detection limit of ClO_(2)^(-)was 0.16 mg/L,the recovery rate of ClO_(2)^(-)was 99.5%~102.2%,and the precision was 2.06%.The method has the characteristics of high accuracy,good reproducibility,low detection limit,low cost and simple steps.

关 键 词：二氧化氯 氯气 检测 离子色谱 碱吸收 

分 类 号：O657.75[理学—分析化学]