碘量法测定二氧化氯要点分析  

Analysis on main points for determination of chlorine dioxide by iodometric method

作　　者：宋波[1] 胡钰[1] 

机构地区：[1]天津化工研究设计院,天津300131

出　　处：《无机盐工业》2007年第7期55-56,共2页Inorganic Chemicals Industry

摘　　要：二氧化氯是一种安全高效的消毒剂。采用国家行业标准中有效二氧化氯含量的测定方法的测量结果差异较大,用碘量法测定稳定态二氧化氯溶液中的有效二氧化氯含量时,活化反应的速度对测定有效二氧化氯的含量有一定影响。通过条件实验确定了碘量法测定有效二氧化氯含量的最佳测试条件,即:活化时间13 min,盐酸稀释至与水体积比1∶4,参考电压140 V,可确保实验结果的平行性和再现性。Chlorine dioxide is a safe and high- efficient disinfector. However,the determination results have big difference if adopting the determination methods of effective chlorine dioxide content in the national industrial standards. The velocity of activating reaction have some influence on the determination of the content of effective chlorine dioxide when using the iodometric method to determine it in stable - state chlorine dioxide solution, Experimental results proved that the optimal test conditions for determining effective chlorine dioxide content by iodometric method are：activation time is 13 min, hydrochloric acid concentration is 1： 4, reference voltage is 140 V. Under such conditions, the parallelity and reproducibility of the test results can be guaranteed.

关 键 词：二氧化氯 碘量法 要点分析 

分 类 号：TQ124.43[化学工程—无机化工]