酸清洗隔断连续流动分析法测定水中总余氯  

Determination of Total Residual Chlorine in Water by Acid CleaningPartition Continuous Flow Analysis

作　　者：仇镇武 向小 QIU Zhen-wu;XIANG Xiao(Guangdong Zhongshan Ecological Environment Monitoring Station,Zhongshan,Guangdong 528400,China;Zhongshan Agricultural Products Quality and Safety Inspection Institute,Zhongshan,Guangdong 528400,China)

机构地区：[1]广东省中山生态环境监测站,广东中山528400 [2]中山市农产品质量安全检验所,广东中山528400

出　　处：《环境监测管理与技术》2023年第6期61-64,共4页The Administration and Technique of Environmental Monitoring

基　　金：中山市科学技术事业发展专项基金资助项目(社会公益科技研究资金)(647590);中山市科学技术局课题基金资助项目(21080414039442);2021年度中山市第二批社会公益专题七基金资助项目(2021SYF08)。

摘　　要：设计试剂配方和反应模块,采用酸清洗隔断连续流动分析测定水中总余氯,通过优化试验条件,使方法在0 mg/L~2.00 mg/L范围内线性良好,相关系数> 0.999,方法检出限为0.014 mg/L。实际废水样品6次测定结果的RSD为2.2%~7.3%,加标回收率为96.8%~106%。用该方法和国标法同时测定实际废水样及标准溶液,两方法测定结果的相对偏差为1.2%~7.7%。A reagent formula and reaction module were designed,and total residual chlorine in water was determined by acid cleaning partition continuous flow analysis.By optimizing the test conditions,the method had good linearity in the range of 0 mg/L to 2.00 mg/L,with the correlation coefficient>0.999.The method detection limit was 0.014 mg/L.The RSD of actual wastewater samples measured 6 times were from 2.2%to 7.3%,and the recoveries were from 96.8%to 106%.Using this method and the national standard method to simultaneously determine actual wastewater samples and standard solution,the relative deviation of the results by the two methods was 1.2%~7.7%.

关 键 词：总余氯 酸清洗 快速测定 连续流动法 水质 

分 类 号：O657.32[理学—分析化学]