水中六价铬测定方法的改进措施研究进展  

Research Progress on Determination of Hexavalent Chromium in Water

作　　者：张芳 来克冰[1] 冯兰慧 王娟[1] ZHANG Fang;LAI Ke-bing;FENG Lan-hui;WANG Juan(Henan Province Rock and Mineral Testing Center,Henan Zhengzhou 450012,China)

机构地区：[1]河南省岩石矿物测试中心,河南郑州450012

出　　处：《广州化工》2022年第7期22-23,29,共3页GuangZhou Chemical Industry

摘　　要：六价铬是水质评价的一个重要指标,国家标准方法(GB 7467-87)二苯碳酰二肼分光光度法是测定水中六价铬的经典方法。文章综述了近年来分析工作者对国家标准方法(GB 7467-87)测定水中六价铬的方法的改进措施,主要体现在:二苯碳酰二肼显色剂溶剂的改进,酸体系的改进,以及配制方式的改进。文章对这些改进措施进行了总结,并结合现有的检测技术进行了展望。Hexavalent chromium is an important index for water quality evaluation. The national standard method(GB 7467-87), 1,5-diphenylcarbohydrazide spectrophotometry is a classical method for the determination of hexavalent chromium in water. The improvments of the method for determination of hexavalent chromium by 1,5-diphenylcarbohydrazide spectrophotometry(GB/T 7467-87) in water in recent years were reviewed in the following aspects: the change of solvent of 1,5-diphenylcarbohydrazide, the improvement of acid system and preparation method. The development trends of COD detection methods were predicted.

关 键 词：六价铬 二苯碳酰二肼分光光度法 改进 

分 类 号：X824[环境科学与工程—环境工程]