摘要
本文基于在酸性条件下，钒对溴酸钾氧化铬蓝黑Ｂ反应的催化作用，建立了测定痕量钒的催化动力学新体系。以极谱法测定的线性范围为０～１０ｎｇ／１０ｍＬ，检测下限为１．４×１０￣（－１２）ｇ／ｍＬ；以光度法测定的线性范围为０～１０ｎｇ／６ｍＬ，检测下限为１．１１×１０￣（－１１）ｇ／ｍＬ。应用于饮用水及人发中痕量钒的测定，结果满意。
A new and very sensitive svstem hasbeen developed for the catalytic kinetic deter-mination of vanadium,It’s based on the reac-tion between eriochrome blue black B andKBrO_3 catalysed by vanadium in H_2SO_4 solu-tion,The sensitivity of determination are1. 11×10￣(-11)g/mL with spectrophotometryand 1.4×10￣(-12)g/mL with polarography. This system has been used to determine tracevanadium in water and hair with satisfactoryresults.
出处
《分析试验室》
CAS
CSCD
北大核心
1995年第3期70-72,共3页
Chinese Journal of Analysis Laboratory
关键词
钒
铬蓝黑B
催化动力学
光度法
饮用水
人发
Vanadium determination
eri-ochrome blue black B
catalytic kinetic analy-sis
