摘要
在ｐＨ２．１的硫酸－２．９６×１０－６ｍｏｌ／Ｌ桑色素－０．１７２ｍｏｌ／Ｌ氯酸钾底液中，钼在－０．４３Ｖ（ＳＣＥ）有一灵敏的极谱催化波，可用于测定微量钼．线性范围１．０４×１０－９～２．５０×１０－８ｍｏｌ／Ｌ，检出限１．８８×１０－１０ｍｏｌ／Ｌ． 极谱催化波法直接应用于三氧化钨光谱标样中微量相的测定，方法简便，准确可靠。
A new polarographic system for determination of molybdenum has been presented. The best constituent of a solution of H2SO4(pH=2.1)-2. 96 × 10-6 mol/L morin-0. 172 mol/L KClO3 is selected as supporting electrolyte. The electric potential of peak is-0. 43 V(SCE).The calibration curve for molybdenum is lineal in the range of 1. 04 × 10-9～2.50× 10-8 mol/L.The detective limit of the method reaches 1. 88 × 10-10 mol/L. This method is simple, rapid and accurate,and has been directly applied to determine trace amount ofmolybdenum in spectrograde WO3.
出处
《中南工业大学学报》
CSCD
1995年第5期688-692,共5页
Journal of Central South University of Technology(Natural Science)
基金
国家自然科学基金
关键词
钼
桑色素
氯酸钾
示波极谱法
配合物
molybdenum
morin
potassium chlorate
oscilloscopic polarography
