摘要
本文利用Cu^(2+)与I^-反应生成I_2不经萃取而直接利用镀银压电石英晶体从10m mol/L六胺—1m mol/L NaF—3m mol/L KI底液中吸附I_2,从而测定了0.02～1μg/ml(0.3～16μmol/L)的铜(Ⅱ)。方法简捷,常见阳离子除Ag^+,Hg^(2+)外均无干扰,可用于铸造锌、铝合金屑中微量铜的测定。
Iodine, produced in the reaction of copper (Ⅱ) with iodide, was adsorbed on the silver electrode of the piezoelectric crystal. 0.02—1.0μg/ml (0.3—15.7 μM) copper (Ⅱ) can be determined by measuring the freqency shift caused by the iodine adsorption. The method has been suggested for the determination of copper in zinc and aluminium alloys.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1989年第7期627-628,共2页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金
关键词
合金
铜
压电晶体
频移
压电法
Copper
Alloy
Frequency shift
Piezoelectric crystal
