NDLI: Approach to the determination of lead by vapour generation atomic absorption spectrometry

Content Provider	Royal Society of Chemistry (RSC)
Author	Stockwell, Peter Goodall, Phillip Hill, Steve J. Thompson, K. Clive Ebdon, Les
Copyright Year	1994
Abstract	A new method for the determination of lead by vapour generation atomic spectrometry is described. This is based upon continuous flow methodology and involves the derivatization of lead, in the presence of an oxidant, with sodium tetraethylborate to yield volatile tetraethyllead. Simplex optimization was applied to this system and to conventional hydride generation. Characteristic concentrations of 0.36 ng cm–3(Pb 283 nm) and 0.145 ng cm–3(Pb 217 nm) for alkyl generation atomic absorption spectrometry were observed. These are approximately 4–5 times better than the equivalent hydride system and superior to all reliable literature values for characteristic concentrations of lead hydride generation atomic absorption spectrometry. Using the 283 nm lead line, limits of detection (3s) obtained for the hydride and alkyl generation systems were 0.62 and 0.07 ng cm–3, respectively. The determination of lead in a standard reference water (NIST SRM 1643c) is reported and good agreement obtained between the certificate value (35.3 ± 0.9 ng cm–3) and the experimentally derived value (34.8 ± 1.4 ng cm–3).
Starting Page	1417
Ending Page	1421
Page Count	5
File Format	PDF
ISSN	02679477
Volume Number	9
Issue Number	12
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/JA9940901417
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	NIST Sodium Tetraethyllead Mathematical optimization Hydride Lead Absorption spectroscopy National Institute of Standards and Technology
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

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