Selenium determination using ethylation and on-line trapping/detection by graphite furnace atomic absorption spectrometry

被引：15

作者：

Allabashi, R ^{[1
]}

Rendl, J ^{[1
]}

Grasserbauer, M ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Analyt Chem, A-1060 Vienna, Austria

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1998年 / 360卷 / 06期

关键词：

D O I：

10.1007/s002160050790

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An on-line system for the continuous ethylation of selenium (IV) in combination with trapping and detection of the produced diethylselenide in the coated AAS graphite furnace was developed. Due to the slow kinetics of the ethylation the volume of the reaction coil and the reaction time had to be increased to 5.5 mt and 80 s, respectively. The sensitivity of the method was comparable with that of the hydride generation in the same system and the relative standard deviation was 6-10%. The determination of Se(IV) in real samples after the most widely used digestion with nitric acid could not be accomplished, because of the drastic signal depression caused by this acid.

引用

页码：723 / 725

页数：3

共 19 条

[1] Validation of three atomic absorption spectrometric methods for the determination of selenium - A comparative evaluation of performance characteristics [J].

Allabashi, R ;

Rendl, J ;

Grasserbauer, M .

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1997, 357 (08) :1024-1028

[2]

ALLABASHI R, 1996, THESIS VIENNA U TECH

[3]

BARBEITO LAU, 1995, QUIM ANAL, V14, P158

[4] DETERMINATION OF BUTYLTIN COMPOUNDS IN SEDIMENT USING GAS-CHROMATOGRAPHY ATOMIC-ABSORPTION SPECTROMETRY - COMPARISON OF SODIUM TETRAHYDROBORATE AND SODIUM TETRAETHYLBORATE DERIVATIZATION METHODS [J].

CAI, Y ;

RAPSOMANIKIS, S ;

ANDREAE, MO .

ANALYTICA CHIMICA ACTA, 1993, 274 (02) :243-251

[5] THE USE OF SODIUM TETRAETHYLBORATE FOR THE DERIVATIZATION AND ANALYSIS OF SELENIUM CONTAINING COMPOUNDS [J].

CLARK, S ;

CRAIG, PJ .

MIKROCHIMICA ACTA, 1992, 109 (1-4) :141-144

[6] NOVEL METHODS FOR DERIVATIZATION OF MERCURY(II) AND METHYLMERCURY(II) COMPOUNDS FOR ANALYSIS [J].

CRAIG, PJ ;

MENNIE, D ;

OSTAH, N ;

DONARD, OFX ;

MARTIN, F .

ANALYST, 1992, 117 (04) :823-824

[7]

de la Calle-Guntinas M. B., 1995, J ANAL ATOM SPECTROM, P111

[8] DETERMINATION OF METHYLMERCURY IN FISH SAMPLES USING GC/AA AND SODIUM TETRAETHYLBORATE DERIVATIZATION [J].

FISCHER, R ;

RAPSOMANIKIS, S ;

ANDREAE, MO .

ANALYTICAL CHEMISTRY, 1993, 65 (06) :763-766

[9] AQUEOUS ETHYLATION OF ORGANOTIN COMPOUNDS IN SIMPLE SOLUTION FOR SPECIATION ANALYSIS BY CRYOFOCUSING AND DETECTION BY ATOMIC-ABSORPTION SPECTROMETRY - COMPARISON WITH HYDRIDE GENERATION [J].

MARTIN, FM ;

DONARD, OFX .

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1995, 351 (2-3) :230-236

[10] SPECIATION OF MERCURY AND METHYLMERCURY COMPOUNDS IN AQUEOUS SAMPLES BY CHROMATOGRAPHY ATOMIC-ABSORPTION SPECTROMETRY AFTER ETHYLATION WITH SODIUM TETRAETHYLBORATE [J].

RAPSOMANIKIS, S ;

CRAIG, PJ .

ANALYTICA CHIMICA ACTA, 1991, 248 (02) :563-567

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