余氯比色计的期间核查方法探讨  

Inquire Into the Period Verification Method of Residual Chlorine Colorimeter

作　　者：谭兆平 戴红 Tan Zhaoping, Dai Hong(Guangzhou Institute of Measuring and Testing Technology, Guangzhou 510030, Chin)

机构地区：[1]广州计量检测技术研究院,广东广州510030

出　　处：《广东化工》2018年第5期80-81,93,共3页Guangdong Chemical Industry

摘　　要：文章建立了一种余氯比色计的期间核查方法。余氯比色计的校准是使用国家标准物质总余氯标准物质,参照国家校准规范《JJF1609-2017余氯测定仪校准规范》[1]对其准确性和重复性进行确认。但实际过程中,在首次使用标准物质对仪器的准确度确认之后,可以使用氯化钴等稳定有色溶液或中性滤光片,利用分光光度计测定其吸光度,建立线性曲线,模拟余氯反应显色,建立一种简便、准确、经济的期间核查方法。According to the 《JJF 1609-2017 Calibration Specification for Residual Chlorine Meters》, residual chlorine colorimeter is calibrated by the national standard substances total chlorine standard material, to confirm its accuracy and repeatability. In actually, after use of standard material to confn＇m the accuracy of instrument the first time, it can use the speetrophotometer to measure the absorbance of cobalt chloride stable colored solution or neutral filter, then simulated residual chlorine chromogenic reaction to build a linear curve, it establish a simple, accurate and economical period verification method.

关 键 词：余氯比色计 氯化钴 中性滤光片 期间核查 

分 类 号：TQ[化学工程]