【摘要】 用单扫示波极谱仪,使钴（Ⅱ）在醋酸钠-醋酸-6-Br-BTAMB-硫酸羟胺底液中于-0.67V产生一灵敏的催化波,钴（Ⅱ）浓度在1.67×10^-9～1.67×10^-7mol·L^-1范围内与催化波峰高成良好的线性关系,检出限达6×10^-10mol·L^-1.研究了催化波的形成条件及性质.测定了分子筛、生物制品及人发等样品中钴的含量.更多还原

【Abstract】 At single-sweep oscillopolarograph,cobalt can occur a sensitive catalytic wave in the solution of sodium acetate acetic acid2-（6-bromo-2-benzo- thiazo ly lazo）-5-dimcthy 1-amino benzoic acid（6-Br-BTAMB）-hydroxylamine sulphate at-0.67V（vs.SCE）.Under the determination condition,cobalt concentration is linear with catalytic wave peak value with the range of 1.67×10^-9mol/l to1.67×10^-7mol/L and the detection limit can reach 6×10^-10 mol/L.The formation condition and properties of the catalytic wave have been researched.The method can be used for the determination of cobalt in sieve,Vitamin B12 and hair with satisfactory results.更多还原