镨-茜素络合剂-氟伏安法测定蔬菜中痕量氟  

DETERMINING THE FLUORIDE IN VEGETABLE BY STRIPPING VOLTAMMETRY OF PRASEODYMIUM-ALIZARIN COPLEXONE-FLUORIDE

作　　者：周国庆[1] 

机构地区：[1]武汉工业学院生物与化学工程系,湖北武汉430023

出　　处：《武汉工业学院学报》2003年第2期77-79,共3页Journal of Wuhan Polytechnic University

摘　　要：报道了蔬菜中氟的线性扫描溶出伏安法测定,在pH4.9的六次甲基四胺的缓冲溶液中,镨 茜素络合剂 氟的络合物产生灵敏的阴极峰,峰电位为-0.65V(VsSCE),峰高与F浓度在8.0×10-8～2.0×10-6mol/L范围内呈线性关系,检出限为6.0×10-8mol/L。该法用于蔬菜中痕量氟的测定。The determination of fluoride in vegetables by linear sweep stripping voltammetry was reported.In the buffer solution of (CH2)6N4,at pH4.9,a sensitive adsorptive complex wave of praseodymium(Ⅲ)alizarin conplexonefluoride can be obtained by linear sweep stripping wltammetry.The peakpotential appears at0.65V(vs.SCE).The peak height is proportional to the concentration of fluride over the range of 8.0×10-8～2.0×10-6mol/L.The detection limit is 6.0×10-8mol/L.The method has been used for the determination of fluoride in vegetables with satisfactory results.

关 键 词：镨-茜素络合剂-氟 蔬菜 痕量氟 六次甲基四胺缓冲溶液 极谱波 线性扫描溶出伏安法 离子峰高 溶液浓度 工作曲线 检出限 

分 类 号：O613.41[理学—无机化学] S603.7[理学—化学]