摘要
研制了 BiAsO_4玻碳修饰电极,该修饰电极对砷酸盐有线性响应,电极电位与砷酸盐总浓度的对数在4×10^(-6)～1×10^(-2)mol/L 浓度范围内,具有良好的线性关系。该电极制作简单,线性范围宽,稳定性较好,但连续使用寿命较短。可望用于直接电位法或电位滴定法测定砷含量。
BiAsO_4-modified electrode has been prepared by electrochemical deposition of Bi and anodic dissolution of Bi in arsenate solution.The electrode gives a linear response of the potential with respect to the logarithm of the total arsenate concentration in the range of 4×10^(-6)～1×10^(-2)mol/L at constant pH.The practice slope is above 40mV.Its advantages are simple,reproducible preparation and fast response.But the lifetime con- tinually used is only about 20h.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1991年第5期567-569,共3页
Chinese Journal of Analytical Chemistry
