在线微柱预富集流动注射火焰原子吸收测定水体中的Cu^(2+)  

Determination of Copper in Water by FI-AAS with Microcolumn On-line Preconcentration

作　　者：陈中兰[1] 翟通德[1] 

机构地区：[1]西华师范大学化学化工学院化学应用与污染控制技术四川省重点实验室,南充637002

出　　处：《应用化学》2009年第2期243-245,共3页Chinese Journal of Applied Chemistry

基　　金：四川省教育厅重点基金资助项目(2003A101)

摘　　要：将微型进样器进样头改制成微锥型柱,并填充自制1,3丙-二胺螯合棉纤维作为吸附材料,将微锥型吸附柱并入流动注射与火焰原子吸收分光光度法联用系统中,实现了环境水样中痕量Cu2+在线微柱预富集和流动注射与火焰原子吸收(FIFAAS)系统的联机测定,该方法用于嘉陵江水体中Cu2+的测定,结果满意。加标回收实验表明,Cu2+的回收率为99%～107.5%,方法检出限为3.5μg/L,RSD为0.79%。We changed the sampling caput of a micro sample injector into micro-conical column where 1,3- propane diamine chelating cotton collulose was packed as adsorption material, and micro conical absorption column was corporated into a combined system of flow injection and flame atomic absorption spectro-photometry （FIAAS）. Determination of trace amounts of copper ion in environmental water samples by FIAAS and online preconcentration on micro-column was successfully realized, and the method was applied to Jialing River water samples with satisfactory results. Experiments indicated that the recovery was 99% - 107.5% for copper ion and detection limit was 3.5 μg/L, and the RSD was 0.79%.

关 键 词：流动注射 火焰原子吸收 在线微柱富集 CU^2+ 

分 类 号：O657.3[理学—分析化学]