| 低温等离子体原子化器-原子荧光光谱法测定碲 |
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| 引用本文： | 别克赛力克·库尔买提,王娟,韩国军,邢志.低温等离子体原子化器-原子荧光光谱法测定碲[J].分析化学,2010,38(3). |
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| 作者姓名： | 别克赛力克·库尔买提 王娟 韩国军 邢志 |
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| 作者单位： | 1. 清华大学化学系,北京,100084;新疆伊犁州产品质量检验所,伊犁,835000
2. 清华大学化学系,北京,100084 |
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| 基金项目： | 国家自然科学基金(NO.20775041)资助项目 |
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| 摘 要： | 基于介质阻挡放电(DBD)原理和结构,建立了适用于原子荧光光谱仪(AFS)的低温等离子体小型原子化器(Atomizer),并研究了氢化物发生-低温等离子体原子化器-原子荧光光谱(HG-DBDAtomizer-AFS)测定环境样品中痕量碲(Te)的分析方法。DBD等离子体原子化器具有小型、低温等优点。对DBD放电结构和放电功率、载气气体流速,氢化物发生过程中的酸度、KBH4浓度,以及观测高度等实验条件进行了详细的考察并优化。本系统测定Te的检出限(3σ)为0.08μg/L;线性范围为0.5～80μg/L;测定精密度为2.1%(n=7);加标回收率为90%～103%。对国家级标准样品(GBW07404,GBW07405,GBW07406)进行测定,测定结果与标准值一致,证明本方法准确可行。
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| 关 键 词： | 介质阻挡放电 低温原子化器 原子荧光 碲 土壤 |
Determination of Tellurium by Atomic Fluorescence Spectrometry Based on Dielectric Barrier Discharge Atomizer |
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| Biekesailike·Kuermaiti,WANG Juan,HAN Guo-Jun,XING Zhi.Determination of Tellurium by Atomic Fluorescence Spectrometry Based on Dielectric Barrier Discharge Atomizer[J].Chinese Journal of Analytical Chemistry,2010,38(3). |
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| Authors: | Biekesailike·Kuermaiti WANG Juan HAN Guo-Jun XING Zhi |
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| Institution: | Department of Chemistry;Tsinghua University;Beijing 100084; Products Quality Inspection Institute;Yili 835000 |
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| Abstract: | A method has been developed for the determination of tellurium( Te) in soil by hydride generation ( HG) atomic fluorescence spectrometry( AFS) based on dielectric barrier discharge( DBD) plasma as lowtemperature atomizer. The samples were dissolved by aqua regior acid without matrix separation. The characteristics of the DBD atomizer and the effects of different experimental parameters,such as discharge power, flow rates of discharge gas and AFS carrier gas,lamp current,negative high voltage,observation hei... |
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| Keywords: | Dielectric barrier discharge Low temperature atomizer Atomic fluorescence spectroscopy Tellurium |
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