流动注射-离子选择性电极测定水中痕量铜离子
Determination of Trace Amount of Cupric Ion in Water with Flow Injection-ion Selective Electrode
摘 要
采用流动注射-离子选择性电极测定电厂循环冷却水和周期循环活性污泥系统(CASS)出口水中痕量铜(Ⅱ)的含量.对各种影响因素,如混合盘管长度、载流流量、采样体积、总离子强度调节剂等进行了优化.方法的检出限(3s/k)为2.2 μg·L-1.对20,40 μg·L-1标准溶液连续测定11次,所得结果的相对标准偏差(n=11)分别为1.94%和1.66%.方法用于实际样品的分析,回收率在95.6%~104.0%之间.
离子选择性电极
痕量铜
循环冷却水
CASS出口水
Flow-injection technique
Ion selective electrode
Trace amount of copper
Circulating cooling water
CASS effluent water
Abstract
Ion selective electrode with flow injection technique was applied to the determination of trace amount of Cu(Ⅱ) in circulating cooling water and cyclic activated sludge system (CASS) effluent water.Various influential factors,including the length of the mixing coil,flow rate of the carrier,sampling volume,total ion strength adjusting buffer solution were studied and optimized.The detection limit (3s/k) of the method was 2.2 μg·L-1.Precision of the method was tested at the concentration levels of 20 and 40 μg·L-1 of Cu(Ⅱ) ion for 11 determinations,values of RSD′s found was 1.94% and 1.66%,respectively.The proposed method was used in the analysis of samples from circulating cooling water and CASS effluent water,giving values of recovery in the range of 95.6%-104.0%.
中图分类号 O657.1
所属栏目 工作简报
基金项目 四川大学214人才振兴计划基金项目(No.0082204127098)
收稿日期 2009/7/21
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备注李俊苹(1981-),女,河南洛阳人,硕士研究生,主要研究方向为化学分析自动化.
引用该论文: LI Jun-ping,LI Yong-sheng. Determination of Trace Amount of Cupric Ion in Water with Flow Injection-ion Selective Electrode[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2010, 46(10): 1198～1200
李俊苹,李永生. 流动注射-离子选择性电极测定水中痕量铜离子[J]. 理化检验－化学分册, 2010, 46(10): 1198～1200
被引情况:
【1】王志成,李永生, "流动注射-微型流通式离子选择性电极测定地热水中高浓度钙(Ⅱ)",理化检验－化学分册 48, 1129-1133(2012)
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参考文献
【1】LI Yong-sheng,WANG Zhong-jia.Automatic analytical methods for monitoring water quality at power plants with reversed flow injection analysis[J].Lab Rob Autom,1996,7:229-238．
【2】GB/T 14418-1993锅炉用水和冷却水分析方法-铜的测定[S]．
【3】张海平,岳慧灵,李永生.FIA-催化分光光度法测定水气中的痕量铜[J].工业水处理,1987,7(5):42-45．
【4】冀正堂,杨望山,蒋志红.石墨炉原子吸收法测定微量血清中铜[J].理化检验-化学分册,1994,30(1):38-39．
【5】邝平仙,张贤萱,杨秀荣,等.离子选择性电极测定矿石和土壤中的铜[J].分析化学,1979,7(1):28-30．
【6】陈兆鹏,张正奇,李现芝,等.串联组合离子选择电极法研究——工业废水中铜离子含量测定[J].化工环保,1992,12(4):237-239．
【7】Lars Risinger.Preconcentration of copper(Ⅱ) on immobilized 8-quinolinol in a flow-injection system with an ion-selective electrode detecror[J].Anal Chim Acta,1986,179:509-514．
【8】杨紫华,沈善琴,赵国良.离子选择电极检测流动注射分析测定铜[J].分析试验室,1988,7(4):36-37．
【9】李永生,承慰才.流动注射分析[M].北京:北京大学出版社,1986:8-10．
【2】GB/T 14418-1993锅炉用水和冷却水分析方法-铜的测定[S]．
【3】张海平,岳慧灵,李永生.FIA-催化分光光度法测定水气中的痕量铜[J].工业水处理,1987,7(5):42-45．
【4】冀正堂,杨望山,蒋志红.石墨炉原子吸收法测定微量血清中铜[J].理化检验-化学分册,1994,30(1):38-39．
【5】邝平仙,张贤萱,杨秀荣,等.离子选择性电极测定矿石和土壤中的铜[J].分析化学,1979,7(1):28-30．
【6】陈兆鹏,张正奇,李现芝,等.串联组合离子选择电极法研究——工业废水中铜离子含量测定[J].化工环保,1992,12(4):237-239．
【7】Lars Risinger.Preconcentration of copper(Ⅱ) on immobilized 8-quinolinol in a flow-injection system with an ion-selective electrode detecror[J].Anal Chim Acta,1986,179:509-514．
【8】杨紫华,沈善琴,赵国良.离子选择电极检测流动注射分析测定铜[J].分析试验室,1988,7(4):36-37．
【9】李永生,承慰才.流动注射分析[M].北京:北京大学出版社,1986:8-10．
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