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文章摘要
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 Cleaning Partition Continuous Flow Analysis
  
DOI:
中文关键词: 总余氯  酸清洗  快速测定  连续流动法  水质
英文关键词: Total residual chlorine  Acid cleaning  Rapid determination  Continuous flow analysis method  Water quality
基金项目: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)
作者单位
仇镇武 广东省中山生态环境监测站 
向小 中山市农产品质量安全检验所 
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中文摘要:
      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~2.00mg/L范围内线性良好,相关系数>0.999,方法检出限为0.014mg/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%。
英文摘要:
      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 0mg/L to 2.00mg/L, with the correlation coefficient>0.999. The method detection limit was 0.014mg/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%.
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