NDLI: Electrothermal atomic absorption spectrometry of inorganic and organic arsenic species using conventional and fast furnace programmes

Content Provider	Royal Society of Chemistry (RSC)
Author	Larsen, Erik H.
Copyright Year	1991
Abstract	Analytical sensitivities for arsenate, monomethylarsonate, dimethylarsinate, arsenobetaine, arsenocholine and the tetramethylarsonium ion are determined by electrothermal atomic absorption spectrometry. Conventional and fast furnace programmes with and without a palladium–magnesium nitrate chemical modifier are studied. Special attention is paid to pre-atomization losses of the arsenic species tested. The conventional programme gives equal characteristic masses of about 16 pg of arsenic for all the species tested. The characteristic mass is defined as that mass of analyte which produces an integrated absorbance signal whose net area is equal to 0.0044 A s. The fast programme with the chemical modifier leads to slightly poorer sensitivities compared with the conventional programme. When using the fast programme without chemical modification, substantial pre-atomization losses, of the quaternary arsonium compounds in particular, are seen at a pre-treatment temperature of only 200 °C.
Starting Page	375
Ending Page	377
Page Count	3
File Format	PDF
ISSN	02679477
Volume Number	6
Issue Number	5
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/JA9910600375
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Arsenate Arsenobetaine Ion Absorption spectroscopy Nitrate Arsenic Analyte
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

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Electrothermal atomic absorption spectrometry of inorganic and organic arsenic species using conventional and fast furnace programmes