Development of analytical systems for the simultaneous determination of the speciation of arsenic [As(III), methylarsonic acid, dimethylarsinic acid, As(V)] and selenium [Se(IV), Se(VI)]

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Abstract

The simultaneous determination of arsenic (As(III), MMAs, DMAs, As(V)) and selenium (Se(IV), Se(VI)) species has been carried out by three instrument combinations. High performance liquid chromatography (HPLC) is coupled with two independent atomic fluorescence spectrometers (AFS) supplied with boosted discharge hollow cathode lamp (BD HCL) by high efficiency sample introduction systems. The efficiency of ultrasonic nebulisation (USN), hydraulic high pressure nebulisation (HHPN) and hydride generation (HG) was compared. The separation of the six species in one system is achieved by gradient elution programs. The HPLC-HG-AFS system provides the best detection limits, but it is not suitable for the direct determination of Se(VI). The HPLC-HG-AFS system was applied for the measurement of arsenic contaminated natural ground water samples. Absolute detection limits of 1.0, 0.5, 1.0, 0.3 and 0.7pg for Se(IV), As(III), DMAs, MMAs and As(V), respectively, were obtained for a 100μl injection volume using the HPLC-HG-AFS system. Copyright (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)13-23
Number of pages11
JournalAnalytica Chimica Acta
Volume413
Issue number1-2
DOIs
Publication statusPublished - May 18 2000

Fingerprint

Cacodylic Acid
High performance liquid chromatography
Arsenic
Selenium
selenium
Hydrides
Spectrometers
liquid chromatography
arsenic
spectrometer
fluorescence
Fluorescence
High Pressure Liquid Chromatography
acid
Dynamic mechanical analysis
Limit of Detection
Groundwater
Electric lamps
Ultrasonics
Electrodes

Keywords

  • AFS
  • Arsenic
  • HPLC
  • Selenium
  • Speciation

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

Cite this

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abstract = "The simultaneous determination of arsenic (As(III), MMAs, DMAs, As(V)) and selenium (Se(IV), Se(VI)) species has been carried out by three instrument combinations. High performance liquid chromatography (HPLC) is coupled with two independent atomic fluorescence spectrometers (AFS) supplied with boosted discharge hollow cathode lamp (BD HCL) by high efficiency sample introduction systems. The efficiency of ultrasonic nebulisation (USN), hydraulic high pressure nebulisation (HHPN) and hydride generation (HG) was compared. The separation of the six species in one system is achieved by gradient elution programs. The HPLC-HG-AFS system provides the best detection limits, but it is not suitable for the direct determination of Se(VI). The HPLC-HG-AFS system was applied for the measurement of arsenic contaminated natural ground water samples. Absolute detection limits of 1.0, 0.5, 1.0, 0.3 and 0.7pg for Se(IV), As(III), DMAs, MMAs and As(V), respectively, were obtained for a 100μl injection volume using the HPLC-HG-AFS system. Copyright (C) 2000 Elsevier Science B.V.",
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AU - Fodor, P.

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AB - The simultaneous determination of arsenic (As(III), MMAs, DMAs, As(V)) and selenium (Se(IV), Se(VI)) species has been carried out by three instrument combinations. High performance liquid chromatography (HPLC) is coupled with two independent atomic fluorescence spectrometers (AFS) supplied with boosted discharge hollow cathode lamp (BD HCL) by high efficiency sample introduction systems. The efficiency of ultrasonic nebulisation (USN), hydraulic high pressure nebulisation (HHPN) and hydride generation (HG) was compared. The separation of the six species in one system is achieved by gradient elution programs. The HPLC-HG-AFS system provides the best detection limits, but it is not suitable for the direct determination of Se(VI). The HPLC-HG-AFS system was applied for the measurement of arsenic contaminated natural ground water samples. Absolute detection limits of 1.0, 0.5, 1.0, 0.3 and 0.7pg for Se(IV), As(III), DMAs, MMAs and As(V), respectively, were obtained for a 100μl injection volume using the HPLC-HG-AFS system. Copyright (C) 2000 Elsevier Science B.V.

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