NDLI: Palladium nitrate–magnesium nitrate modifier for electrothermal atomic absorption spectrometry. Part 5. Performance for the determination of 21 elements

Content Provider	Royal Society of Chemistry (RSC)
Author	Mudakavi, Jayateerth R. Welz, Bernhard Schlemmer, Gerhard
Copyright Year	1992
Abstract	The determination of 21 elements was investigated in the presence of the palladium nitrate–magnesium nitrate (Pd–Mg) mixed modifier. Significantly higher pyrolysis temperatures could be used for the majority of elements compared with previously recommended modifiers, making possible an efficient removal of concomitants prior to the atomization of analyte elements. A 10 µg amount (1 g l–1) of NaCl had no influence on the determination of all of the elements investigated and most of the analyte elements were not affected even by a ten times higher concentration. The concentration of potassium sulfate, which had no influence on the determination, was lower for most of the elements. The tolerance towards NaCl and K2SO4 increased significantly for a number of elements when the pyrolysis temperature was lowered by 200–300 °C and the pyrolysis time was increased. For most of the elements investigated the characteristic mass values were comparable to, or better than published data. For some elements, however, such as bismuth, lead and tellurium, the characteristic mass was significantly higher. This resulted from the high stabilizing power of the Pd–Mg modifier, which necessitated higher atomization temperatures for these elements for which diffusional losses were more pronounced. The advantages and limitations of the Pd–Mg modifier are discussed.
Starting Page	1257
Ending Page	1271
Page Count	15
File Format	PDF
ISSN	02679477
Volume Number	7
Issue Number	8
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/JA9920701257
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Nitrate Pyrolysis Analyte Potassium sulfate Bismuth Tellurium
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

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