分光光度法测定高锰酸盐指数中有关问题探讨  

Discussion about the problems related to the determination of permanganate index by UV-Vis spectrophotometry

作　　者：褚华男[1] 农永光[1] 郭炜[1] 胡刚[1] 

机构地区：[1]中节能六合天融环保科技有限公司,北京100085

出　　处：《应用化工》2013年第11期2115-2117,共3页Applied Chemical Industry

摘　　要：采用紫外-可见分光光度法测定地表水中高锰酸盐指数,研究了高锰酸钾溶液浓度、硫酸溶液用量、水浴加热温度及时间的影响,结果表明,紫外-可见分光光度法在1/5 KMnO4浓度为0.010 mg/L的高锰酸钾标准使用液用量为2.5 mL,1+3硫酸溶液用量为10 mL,水浴加热温度为100℃,加热时间为30 min条件下具有较好的精密度,可用于在线、远程监测。The feasibility of the permanganate index in surface water by the UV-Vis spectrophotometry was studied. The effects of KMnO4 concentration and dosage of sulfuric acid, heating temperature and time were investigated. The results indicated that the selected optimum analysis parameters were 0.010 mg/L 1/5 KMnO4 dosage of 2.5 mL, 1 ＋ 3H2SO4 dosage of 10 mL,30 rain heating time at the heating temperature of 100℃. The UV-Vis spectrophotometry had good precision, and could be used for online, remote monitoring at this analysis parameters.

关 键 词：紫外-可见分光光度法 高锰酸盐指数 水质监测 

分 类 号：TQ016.1[化学工程] O657.3[理学—分析化学]