固相分光光度法测定石煤渣中痕量钽  

Solid phase spectrophotometry for the determination of trace tantalum in stone coal slag

作　　者：罗道成[1] 陈安国[1] 胡忠于[1] 

机构地区：[1]湘潭工学院化工系,湖南湘潭411201

出　　处：《冶金分析》2004年第2期13-15,共3页Metallurgical Analysis

摘　　要：在0 30mol/LHCl介质中钽吸附于树脂上,再与5 Br PADAP反应生成有色络合物,在最大吸收波长575nm处,对树脂相直接进行光度测定,建立了固相分光光度法测定痕量钽 的新方法。钽的质量浓度在0～200μg/L范围内符合比尔定律,其表观摩尔吸光系数为2 75×106。该法已应用于石煤渣中痕量钽的测定,获得了满意的结果。In the medium of 0.30 mol/L hydrochloric acid, tantalum was adsorbed on resin, the tantalum adsorbed on resin reacted with 5-Br-PADAP to form a color complex and the colored resin phase could be directly determined in the maximum absorption at 575 nm by spectrophotometry. Based on this, a new solid phase spectrophotometry for the determination of trace tantalum? was developed. Beer's law is obeyed in the concentration range of 0～200 μg/L for tantalum?, and the apparent molar absorptivity of this method is 2...

关 键 词：固相分光光度法 钽 石煤渣 

分 类 号：O657.3[理学—分析化学]