镍—酪氨酸配合物极谱波研究

Investigation on the Polarographic Wave of Nickel(Ⅱ) Tyrosine Complex

在ｐＨ为８．５０的Ｂｒｉｔｏｎ－Ｒｏｂｉｎｓｏｎ缓冲体系中（ＢＲ），Ｎｉ（Ⅱ）与酪氨酸形成的配合物于－０．９５Ｖ（ｖｓＳＣＥ）产生灵敏的阴极波．其二阶导数波高与酪氨酸浓度在１．０×１０－６～８．０×１０－５ｍｏｌＬ－１内呈线性关系，该波可用于酪氨酸的分析测定．

In Britton Robinson buffer solution(pH8.50),the complex of nickel(Ⅱ) tyrosine can produce a sensitive cathodic wave at 0.95V(vs SCE).The height of second order derivative wave is linear with the concentration of tyrosine over the range of 1.0×10 6 to 8.0×10 5 mol·L 1 .The method has been developed for the determination of tyrosine.In this paper ,the characteristics of the wave has been studied.