Speciation analysis of inorganic form of arsenic in ground water samples by hydride generation atomic absorption spectrometry with insitu trapping in graphite tube

• Authors: Przemysław Niedzielski , Marcin Siepak
• Languages of publication: EN

Abstracts

EN

This paper presents the results of a study on the optimization of the determination of total arsenic and its species using the absorption atomic spectrometry method combined with hydride generation and in-situ concentration on the inner walls of the graphite tube. To ensure a maximum efficiency of the in-situ analyte concentration on the graphite tube walls, a palladium modifier subjected to preliminary thermal reduction was used. The limits of detection (3σ) were 0.019 ng/mL for total As and 0.031 ng/mL for As(III) at the preliminary analyte concentration for 60s. The optimised procedure of the analyte concentration on the inner walls of the atomiser (graphite tube) was applied for determinations of arsenic in samples of ground water. The content of arsenic in the samples studied varied from 0.21 ng/mL to 0.80 ng/mL for As(III), and from 0.19 ng/mL to 1.24 ng/mL for As(V).

Keywords

EN

Arsenic; atomic absorption spectrometry; hydride generation; in-situ trapping

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2005
• Volume: 3
• Issue: 1
• Pages: 82-94

Dates

published

1 - 3 - 2005

online

1 - 3 - 2005

Contributors

author

Przemysław Niedzielski

• Department of Water and Soil Analysis, Adam Mickiewicz University, Drzymaty Street 24, 60-613, Poznań, Poland

author

Marcin Siepak

• Department of Hydrogeology and Waters Protection, Adam Mickiewicz University, Maków Polnych 16, 61-686, Poznań, Poland

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Identifiers

DOI

10.2478/BF02476240