Study of metal-loaded activated charcoals for the separation and determination of selenium species by energy dispersive X-ray fluorescence analysis

被引：18

作者：

Latva, S ^{[1
]}

Peräniemi, S ^{[1
]}

Ahlgrén, M ^{[1
]}

机构：

[1] Univ Joensuu, Dept Chem, FIN-80101 Joensuu, Finland

来源：

ANALYTICA CHIMICA ACTA | 2003年 / 478卷 / 02期

关键词：

selenium; Se(IV); Se(VI); seleno-DL-methionine; preconcentration; adsorption; activated charcoal; metal modification; energy dispersive X-ray fluorescence spectrometry; graphite furnace atomic absorption spectrometry;

D O I：

10.1016/S0003-2670(02)01524-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Conversion of adsorption properties of activated charcoal (C*) by metal modification towards selenite, selenate and seleno-DL-methionine (Se-Met) was studied. Several metals were included in modification studies and also a procedure was developed for the separation and independent determination of microgram quantities of these selenium species in aqueous solution. Selenium species were collected one by one from the same sample solution onto collector material by adsorbing them directly or after complex formation onto different metal-loaded activated charcoals (MgC* and FeC*). The mass of selenium in these collectors was measured directly by energy dispersive X-ray fluorescence spectrometry (EDXRF). Detection limits for all three selenium species were better than 6 mug corresponding to concentration of 60 mug/l with 0.1001 of initial sample volume. (C) 2002 Published by Elsevier Science B.V.

引用

页码：229 / 235

页数：7

共 17 条

[1] Simultaneous speciation of arsenic, selenium, antimony and tellurium species in FT waters and soil extracts by capillary electrophoresis and UV detection [J].