【摘要】 建立了用单(6—OTs—β—CD)修饰PVC膜电极测定痕量铅(Ⅱ)的新方法。结果表明:峰电流(IP)与Pb2+浓度在2.56×10-3~9.32×10-8mol/L之间有良好的线性关系,检测限为1.0×10-12mol/L。回归方程分别为IP=624.3+23.6 lgC,相关系数r=0.9992。更多还原

【Abstract】 A new method for determination of Lead(Ⅱ) was studied by the modified electrode with single(6-oxygen-6-contrapuntal toluene sulfonyl)-beta-dextrin(6-OTS-β-CD) and PVC membrane.The results showed: The linear range of determination is 2.56×10-3~9.32×10-8mol/L for Lead(Ⅱ),and the detection limit is 1.0 × 10-12 mol/L.The regression equation is IP=624.3+23.6lgC,r=0.9992.更多还原