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2.2μg.L-1。对20,40μg.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。
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%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2010年第10期1198-1200,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
四川大学214人才振兴计划基金项目(No.0082204127098)
关键词
流动注射分析
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
