The Use of a Membrane GasLiquid Separator for Flow Injection Hydride Generation Atomic Absorption Spectrometry On-Line Speciation and Determination of As(III) and As(V)

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Title:The Use of a Membrane GasLiquid Separator for Flow Injection Hydride Generation Atomic Absorption Spectrometry On-Line Speciation and Determination of As(III) and As(V)
Creators:
Krenželok, Milan
Rychlovský, Petr
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 63, 12, pp. 2027-2035
Uncontrolled Keywords:FIA, Arsenic, Speciation, Hydride generation, AAS, Gas-liquid separator

Abstract

This method employs a membrane gas-liquid separator and the hydride generation technique in the FIA AAS method for speciation of As(V) and As(III). The gas-liquid membrane separator achieves high measurement sensitivity and shows a very fast response (short delay time) because of its minimum dead volume. Conditions were optimized for the determination of arsenic by the flow injection hydride generation atomic absorption spectrometry method using this membrane separator. An apparatus was proposed for on-line speciation of both As(V) and As(III). Several reduction systems were used for reduction of As(V) to As(III) in the on-line arrangement. The best results were obtained using solution of 15 g KI in 100 ml of 6 M HCl at the reaction coil temperature 60 °C. A detection limit of 150 pg for As(III), 80 pg for As(III + V) and sampling rate of 25 samples per hour were reached. <p>

Title:The Use of a Membrane GasLiquid Separator for Flow Injection Hydride Generation Atomic Absorption Spectrometry On-Line Speciation and Determination of As(III) and As(V)
Creators:
Krenželok, Milan
Rychlovský, Petr
Uncontrolled Keywords:FIA, Arsenic, Speciation, Hydride generation, AAS, Gas-liquid separator
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:63
Number:12
Page Range:pp. 2027-2035
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19982027UNSPECIFIED
ID Code:1442
Item Type:Article
Deposited On:06 Feb 2009 17:09
Last Modified:06 Feb 2009 16:09

Citation

Krenželok, Milan; Rychlovský, Petr (1998) The Use of a Membrane GasLiquid Separator for Flow Injection Hydride Generation Atomic Absorption Spectrometry On-Line Speciation and Determination of As(III) and As(V). Collection of Czechoslovak Chemical Communications, 63 (12). pp. 2027-2035. ISSN 0010-0765

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