摘要
在ＮＨ３－ＮＨ４Ｃｌ（ｐＨ９．２及ｐＨ５．６）底液中，采用玻碳电极镀汞膜作工作电极，经阴极电解富集后，铜（Ⅱ）在－０．４８Ｖ（ｖｓ．ＳＣＥ），锌（Ⅱ）在－１．０８Ｖ左右呈现良好的氧化溶出峰．峰高对浓度的线性范围：铜为０．１～２．５μｇ／２０ｍＬ，锌为０．２～４．６μｇ／２０ｍＬ．用该方法直接测定了黄酒中的微量铜和锌．
In NH 3 NH 4Cl (pH 9.2 or 5.6) solution with a glass carbon mercury plated electrode as work electrode, Cu(II) and Zn(II) can produce a sensitive potentiometric stripping peaks. The copper of peak at about -0.48 V (vs. SCE) and zinc at about -1.08 V. The analytical ranges are 0.1～2.5 μg/20 mL of Cu, 0.2～4.6 μg/20 mL of Zn. The method has been used for the determination of copper and zinc in wine.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
北大核心
1998年第4期458-460,共3页
Journal of Central China Normal University：Natural Sciences
基金
湖北省卫生厅科研基金
关键词
电位溶出法
黄酒
铜
锌
测定
potentiometric stripping analysis
wine
copper
zinc
