Determination of beryllium in drinking and waste water by tungsten furnace atomic absorption spectrometry

Beryllium at trace levels was determined by tungsten furnace atomic absorption spectrometry (AAS). Optimal conditions included a high rate of heating (achievable with a tungsten atomizer) and the reductive action of hydrogen in the protective atmosphere. Thus, a higher sensitivity was obtained at 23...

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Bibliographic Details
Published inJournal of analytical atomic spectrometry Vol. 10; no. 2; pp. 155 - 160
Main Authors CERNOHORSKY, T, KOTRLY, S
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 1995
Subjects
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
Trace analysis
Water
Chemical modification
Chemical analysis
Feed water
Beryllium
Thermoelectric atomization
Matrix effect
Nebulizor
Waste water
Atomic absorption spectrometry
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Summary:Beryllium at trace levels was determined by tungsten furnace atomic absorption spectrometry (AAS). Optimal conditions included a high rate of heating (achievable with a tungsten atomizer) and the reductive action of hydrogen in the protective atmosphere. Thus, a higher sensitivity was obtained at 234.9 nm (compared to graphite furnace AAS). The addition of aluminium nitrate as chemical modifier eliminated interferences from magnesium and calcium at levels found in natural waters. A linear calibration between 0.5-30 pg of beryllium, a detection limit of 0.16 pg and a characteristic mass of 0.2 pg were obtained using peak height measurement mode. This method was suitable for rapid water assays but could also be applied to the analyses of contaminated water using standard additions technique.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0267-9477
1364-5544
DOI:10.1039/ja9951000155