阳极溶出方波伏安法测自来水中的镉  

Determination of Cadmium in a Water Sample with Anodic Stripping Square Wave Voltammetry

作　　者：高红艳[1] 孙佳林[2] 李宁[1] 

机构地区：[1]伊犁师范学院化学与生物科学学院 [2]伊犁师范学院人文学院,新疆伊宁835000

出　　处：《伊犁师范学院学报（自然科学版）》2008年第2期31-33,共3页Journal of Yili Normal University：Natural Science Edition

摘　　要：以0.20mol/L的HAc-NaAc(pH=3.50)作为支持电解质,起扫电位为0.0000V.采用阳极溶出方波伏安法可得到良好的镉的溶出峰,峰电位为:-0.614V(vs.SCE).镉的ip在浓度为2.00×10-7mol/L～1.00×10-6mol/L,2.00×10-8mol/L～1.00×10-7mol/L范围内呈良好的线性关系(r分别为0.9985,0.9987).检出限为7.00×10-9mol/L.该方法用于自来水中的镉含量的现场监测,结果令人满意.In a supporting electrolyte containing 0.20 mol/L HAc-NaAc at pH 3.50,a sensitive stripping peak of Cadmium(Cd) was found by anodic stripping square wave voltammetry. The peak potential Ep=-0.614V(vs.SCE).The relationship between peak current and the concentration of Cd is linear from 2.00×10-7 mol/L～1.00×10-6 mol/L (r=0.9985) and 2.00×10-8 mol/L～1.00×10-7 mol/L (r=0.9987) respectively. The detection limit is 7.00×10-9mol/L. The method has been applied to the determination of Cadmium in a water sample with satisfactory results.

关 键 词：阳极溶出方波伏安法 自来水 镉 

分 类 号：TU991.2[建筑科学—市政工程]