【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.更多还原

【Abstract】 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.更多还原