摘要
在０．０１ｍｏｌ／ＬＨＣｌ－０．１ｍｏｌ／ＬＫＳＣＮ底液中，Ｐｂ（Ⅱ）和Ｓｎ（Ⅱ）具有良好的极谱波，其峰电位分别为－０．３４８Ｖ和－０．３９２Ｖ（ｖｓ．Ａｇ／ＡｇＣｌ），但波谱重叠严重，难以用常规的极谱法进行同时测定。本文利用等电流点双电位法分辨铅和锡的重叠极谱波，实现了铅锡两组分的同时测定，并应用于实际样品的分析。
The polarographic waves of lead(Ⅱ) and tin(Ⅱ) are overlapped due to their similar reductive potentials in the medium of 0.01 mol/L hydrochloride and 0.1 mol/L potassium thiocyanate,and it is dificult to determine these two components simultaneously with conventional polarography.In this paper,double-potential point method were studied and successfully applied to the resolution of overlapping polarographic waves of these two components and satisfactory quantitative results were obtained.
出处
《南昌大学学报（理科版）》
CAS
1999年第1期77-80,共4页
Journal of Nanchang University(Natural Science)
基金
国家自然科学基金
江西省自然科学基金
关键词
极谱法
铅
锡
测定
双电位极谱法
double-potential method,polarography,lead,tin
