铈(Ⅳ)-胱氨酸络合物的吸附伏安法应用  

STUDY OF THE ADSORPTIVE VOLTAMMETRIC CHARACTERISTICS OF Ce(Ⅳ) CYSTINE COMPLEX

作　　者：安泽胜[1] 柳承霞 王丽增[1] 杨志昆 

机构地区：[1]山东大学化学系 [2]山东省畜牧局药检所

出　　处：《山东大学学报（自然科学版）》1999年第3期322-325,共4页Journal of Shandong University(Natural Science Edition)

摘　　要：研究了铈（ Ⅳ） —胱氨酸络合物在硼砂底液中的吸附伏安特性．在０ ．０１ｍ ｏｌ／ Ｌ 的硼砂中，铈（ Ⅳ） —胱氨酸在－ ０ ．０６ Ｖ（ｖｓ ． Ｓ Ｃ Ｅ） 出现一灵敏的吸附还原峰，其峰高与胱氨酸在１ ．０ ×１０ － ９ ～１ ．０ ×１０ － ７ ｍ ｏｌ／ Ｌ 范围内成线性关系，检测下限为５ ．０ ×１０ － １０ ｍ ｏｌ／ Ｌ．The adsorptive voltammetric characteristics of Ce(Ⅳ) cystine complex were studied in 0.01 mol/L borax buffer solution.The complex presented a sensitive adsorptive reduction peak at -0.66V (vs.SCE).The peak current is proportional to the concentration of cystine over the range of 1.0×10 -9 ～1.0×10 -7 mol/L.The detection limit is 5.0×10 -10 mol/L.The method had been applied to the determination of trace cystine in samples and satisfactory results were obtained.

关 键 词：胱氨酸 铈 吸附伏安法 配合物 

分 类 号：O614.332[理学—无机化学]