二苯氨基脲分光光度法测定饮水机热罐中六价铬含量  

Determination of Cr;in Water of Water Drinker Hot Pot by Diphenylcarbazide Spectrophotometry

作　　者：程海燕 杨鹏 韦宇颖 CHENG Haiyan;YANG Peng;WEI Yuying(Shenzhen Angel Drinking Water Industry Group Co.,Ltd.,Shenzhen518108,China)

机构地区：[1]深圳安吉尔饮水产业集团有限公司,广东深圳518108

出　　处：《净水技术》2022年第1期162-165,共4页Water Purification Technology

摘　　要：为了探讨饮水机热罐水中浸出六价铬的含量,采用快速测定六价铬含量的方法:二苯氨基脲分光光度法。试验中对样品进行平行处理并测定浸泡水中六价铬含量,评价热罐水中六价铬的浸出量。结果表明,使用该方法测定饮水机热罐中六价铬含量很稳定,曲线线性良好,线性回归方程为I=0.761 2c+0.002 5,R^(2)=0.999 93,饮水机中热罐浸出六价铬含量为0.010 mg/L。该法对输配水设备产品中浸出六价铬含量的测定具有一定的指导意义。In order to study the content of hexavalent chromium released in hot pot water, a rapid method for the determination of hexavalent chromium was used. In the experiment, the samples were processed in parallel and the content of hexavalent chromium of processed water was determined. Results showed that the content of hexavalent chromium in the processed water was stable and the curve was linear. Linear regression equation was I=0.761 2c+0.002 5,R^(2)=0.999 93. Result of the hexavalent chromium content extracted from the hot pot in water dispenser was 0.010 mg/L. Method has some guiding significance for the determination of hexavalent chromium of water in transportation and distribution pipeline system.

关 键 词：热罐 分光光度法 六价铬 输配水系统 饮水机 

分 类 号：X832[环境科学与工程—环境工程]