微柱预富集ICP-AES测定高纯银中铝、铜、铬、镍和锰  

Determination of Al,Cu,Cr,Ni and Mn in High Purity Silver by ICP-AES with Micro-Column Preconcentration

作　　者：游革新[1] 尹诗衡[2] 

机构地区：[1]武汉工程大学化学与制药学院,武汉市430071 [2]华南理工大学测试中心,广州市510640

出　　处：《光谱实验室》2006年第4期736-740,共5页Chinese Journal of Spectroscopy Laboratory

摘　　要：提出了以纳米TiO2作为富集材料填充自制的微柱,同时分离富集高纯银中的多种杂质离子Cu、Cr、Mn、Ni、Al的方法,结合电感耦合等离子体-原子发射光谱法(ICP-AES)测定。本文主要考察了影响富集和洗脱的主要因素,确定了纳米TiO2富集、解脱金属离子的最佳实验条件。并应用于标准样品和实际样品-高纯银中杂质含量的测定,取得了很好的效果。A new method using a micro-column has been developed for the preconcentration of trace amounts of coexisting ions （Cu, Cr, Mn, Ni, Al） prior to their determination by inductively coupled plasma atomic emission spectrometry （ICP-AES）,and the column was filled with nanometer TiO2. The effects of pH, sample flow rate and volume, elution of analytes were investigated. The adsorption capacity of nanometer TiO2 has been found. Various experimental conditions were investigated in detail. The method has been applied to the determination of impurity Cu,Cr, Mn,Ni, Al in high purity silver samples with satisfactory results.

关 键 词：纳米TIO2 做柱 预富集 电感耦合等离子体-原子发射光谱法 高纯银 

分 类 号：O657.31[理学—分析化学]