摘要
在ｐＨ＝ １０．２ 的硼砂和氢氧化钠介质中，锰（Ⅱ）与２，２＇－联吡啶（Ｂｉｐｙ）生成配合物，于－ １．５８Ｖ（对饱和甘汞电极）出现一尖锐的极谱峰。在滴汞电极上用示波极谱仪测定，峰电流与锰（Ⅱ）浓度在０．０００２５～０．２０ μｇ·ｍ Ｌ－ １范围内呈线性关系，检出限为０．００００８ μｇ·ｍ Ｌ－ １，应用于白酒和茶叶中锰（Ⅱ）的测定，取得了满意的效果。
In borax sodium hydroxide(pH=10.2) medium, a very sensitive polaragraphic catalytic wave was observed by using a single sweep oscillopolarograph at about -1.58V(vs,SCE). The linear relationship between the peak current and the concentration of manganese (Ⅱ) is in the range of 0.00025~0.20 μg·mL -1 . The detection limit of manganese(Ⅱ) is 0.00008 μg·mL -1 . This method was applied to the determination of manganese (Ⅱ) in wine and tea. Results were satisfactory.
出处
《化学世界》
CAS
CSCD
1999年第11期602-606,共5页
Chemical World
关键词
锰
联吡淀
吸附波
配合物
测定
manganese(Ⅱ) 2,2' bipyridyl catalytic wave
