摘要
在酸性条件下,Cu(Ⅱ)-SCN-结晶紫形成很深颜色的三元离子缔合物,通过浮选富集,在587nm处测其在有机溶剂中的浓度,建立了测定痕量铜的新方法。该法用于测定环境水样和经处理的茶多酚中的铅含量.摩尔吸光系数达1.68×106L.mol-1.cm-1,线性范围0.50~60μg/L。回收率为99.4%~101.2%,结果令人满意。
Triple ion complex formed by cu(Ⅱ)-SCN-viola crystalline in acidic solution showed a deeply color. Trace amount of Cu (Ⅱ) in nature water and tea poyphenol can be determined by solvent flotation spectrophotometry.The moloar absorptivity is 1.68×10° L.mol-1.cm-1. The linear range is in 0.5~60μg/L and the recovery of Cu (Ⅱ) is about 99.4%~101.2%. The method is simple, rapid and sensitive.
出处
《广东微量元素科学》
CAS
1998年第11期71-72,F003,共3页
Trace Elements Science
关键词
分光光度法
痕量分析
铜
离子缔合物
测定
Solvent flotation spectrophotometry,Copper, Trace analysis, Triple ion complex