石墨炉原子吸收光谱法测定化探样品中的微量钒  

Determination of Trace Vanadium in Geochemical Materals by Graphite Furnace Atomic Absorption Spectrometry

作　　者：陈建宏 

机构地区：[1]甘肃省核地质局二一九大队,甘肃省天水市麦积区35号743025

出　　处：《光谱实验室》2011年第2期903-906,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：采用加入基体改进剂-石墨炉原子吸收光谱法测定化探样品中微量钒。研究了不同基体改进剂对钒测定结果的影响,确定了石墨炉原子吸收测定钒的最佳条件。结果表明,采用镧为基体改进剂,在5%的HC l介质中进行钒的测定可获得满意的结果。方法的检出限为2.11μg/L,线性范围0—300.0μg/L,相关系数r=0.9959。该方法用于化探样品中微量钒的测定,平均相对误差RE(GBW)<12%,相对标准偏差RSD(GBW)<10%。The determination of trace vanadium in geochemical materials was established by matrix modifier-graphite furnace atomic absorption spectrometry.The effect of different matrix modifiers on the determination results of vanadium was investigated,and the optimal conditions for determination of vanadium were obtained by graphite furnace atomic absorption.With lanthanum as matrix modifier,the satisfying result of determination of vanadium was obtained in 5% HCl medium.The detection limit was 2.11μg/L with the linear range of 0—300.0μg/L,and correlation coefficient r was 0.9959.The method is applied to determination of trace vanadium in geochemical materials with the average relative error RE（GBW） 12% and relative standard deviation RSD（GBW） 10%.

关 键 词：石墨炉原子吸收光谱法 化探样品 微量 钒 

分 类 号：O657.31[理学—分析化学]