Determination of lead in water by electrothermal atomic absorption spectrometry with a nickel(II)-ammonium tartrate modifier

A method is described for the determination of low concentrations of lead in water samples. Atomic absorption spectrometry is used with a tungsten ribbon furnace and Zeeman background correction. Interferences are eliminated by the addition of ammonium tartrate and nickel(II) nitrate to the samples...

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Bibliographic Details
Published in:Analytica chimica acta 1991-11, Vol.254 (1), p.99-107
Main Authors: Sekerka, I., Lechner, J.F.
Format: Article
Language:English
Subjects:
Analytical chemistry
Atomic absorption spectrometry
Chemistry
Electrothermal atomization
Exact sciences and technology
Lead
Spectrometric and optical methods
Waters
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Summary:A method is described for the determination of low concentrations of lead in water samples. Atomic absorption spectrometry is used with a tungsten ribbon furnace and Zeeman background correction. Interferences are eliminated by the addition of ammonium tartrate and nickel(II) nitrate to the samples to act as a matrix modifier and adjust the pH. The results show the superior performance of this modifier over other types used conventionally. The detection limit is 1 μg 1 −1 relative standard deviation of < 10%. When multiple sample injection is used, a detection limit of 0.1 μg 1 −1 can be obtained. The instrumentation is simple and the method is efficient for the determination of lead in various water samples.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(91)90015-W