薄层树脂相吸光光度法测定痕量钼的研究  

STUDY ON THE DETERMINATION OF TRACE MO(Ⅵ) BY THIN LAYER RESIN PHASE SPECTROPHOTOMETRY

作　　者：闫永胜[1] 李荷[2] 张国营[2] 陆晓华[1] 

机构地区：[1]华中科技大学环境科学与工程学院,武汉430074 [2]河南省平顶山师范高等专科学校化学系,平顶山467002

出　　处：《离子交换与吸附》2002年第6期564-568,共5页Ion Exchange and Adsorption

基　　金：河南省自然科学基金

摘　　要：在酸性条件下,建立了以薄层树脂相吸光光度法测定钼的新方法.此法灵敏度高 (ε402=1.0×105L/mol@cm),比水相光度法提高24倍 (ε水相= 4.2×103L/mol@cm),精密度好 (检测6次,RSD=1.21%).工作曲线线性范围 (25ml体积) 0～18μg,测定天然水中钼,加标回收率为95%～105%.A new method for the determination of Mo(Ⅵ) by thin layer resin phase spectrophotometry in the situation of acidity has been reported. This method has a high sensitivity (?402=1.0?05L/mol穋m), which is 24 times higher than that of liquid phase spectrophotometry (ε水相=4.2×103L/molcm). It has been proved a satisfactory precision (7.0g/25ml Mo(Ⅵ), n=6, RSD=1.21%). The Mo(Ⅵ) in natural water has been determined, the linear range (Volume 25ml) is 0~18靏 and the recovery is 95%~105%.

关 键 词：测定 薄层树脂相吸光光度法 钼 痕量分析 水样 

分 类 号：O614.612[理学—无机化学] O66[理学—化学]