丙酮-二苯碳酰二肼与乙醇-二苯碳酰二肼显色剂测定水质六价铬  

Determination of Hexavalent Chromium in Water with Acetone-diphenylcarbazide and Ethanol-diphenylcarbazide Color Reagent

作　　者：杨雪梅 Yang Xue-mei

机构地区：[1]南平市松溪环境监测站,福建南平353500

出　　处：《化工设计通讯》2021年第4期80-81,共2页Chemical Engineering Design Communications

摘　　要：铬在环境中主要以三价和六价的形式存在。在水体中,六价铬一般以CrO4^(2-)、HCrO4^(-)、Cr2O7^(2-)三种阴离子形式存在,六价铬在环境中不易降解,容易被人体吸收储存在体内导致肝癌,所以对人体有害。在地表水和许多废水监测分析中都把六价铬作为一个必测指标。因此,水环境中六价铬监测有着重要意义。Chromium mainly exists in the form of trivalent and hexavalent in the environment.In water bodies,hexavalent chromium generally exists in the form of CrO4^(2-),HCrO^(4-),Cr2O7^(2-)three anions.Hexavalent chromium is not easily degraded in the environment and is easily absorbed and stored in the body to cause liver cancer,so it is harmful to the human body.In the monitoring and analysis of surface water and many wastewaters,hexavalent chromium is used as a mandatory indicator.Therefore,the monitoring of hexavalent chromium in the water environment is of great significance.

关 键 词：六价铬 二苯碳酰二肼分光光度法 显色剂 

分 类 号：X832[环境科学与工程—环境工程]