一种用于测定痕量铜离子的流动注射在线富集等离子体炬原子发射光谱法  

A New Method for the Determination of Trace-level Cu2+ Based on Flow-Injection on-line Preconcentration and Microwave Plasma torch-atomic Emission Spectrometry

作　　者：李永生[1] 赵博[2] 孙旭辉[2] 

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]东北电力学院应用化学系,吉林吉林13201

出　　处：《四川大学学报（工程科学版）》2009年第5期92-96,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：教育部留学回国人员科研启动基金资助项目(2300448);四川大学214人才引进振兴计划基金资助项目(0082204127067)

摘　　要：基于流动注射-在线柱预浓集-微波等离子体炬原子发射光谱,对在线浓集测定流路和各种测试条件进行优选,建立了一种测定痕量铜的新方法。得到的优化条件是:样品液富集体积为18 ml、富集时间为9 min、富集流速为2 ml/min、洗脱液流速为1 ml/min、洗脱液(HCl)浓度为2 mol/L、微波功率为110 W、载气流量为1.6 L/min、工作气(氩)流量为0.4 L/min、激发波长324.8 nm。在优选条件下,本方法的测定范围为2~40μg/L(y=41.727x-5.9883,r=0.9994),检出限达到1.0μg/L,相对标准偏差为2.66%(n=11),回收率为96%~104%。本方法无需用手工进行繁杂的样品前处理,简便易行,灵敏度高,已成功用于发电厂水汽样品中痕量铜的测定。A new method for determining trace-level copper ion was proposed based on flow-injection on-line preconcentration and microwave plasma torch atomic emission spectrometry.Optimized determination conditions were as follows: the volume of sample solution for preconcentration was 18 ml,the time and flow rate for the preconcentration were 9.0 min and 2.0 ml/min,respectively;the flow rate and concentration of the eluant(HCl) were 1.0 ml/min and 2.0 mol/L,respectively;the power of microwave was 110 W,the flow rate...

关 键 词：在线富集 流动注射 等离子体炬 原子发射光谱 痕量铜 

分 类 号：O614.121[理学—无机化学]