Neodymium(III) Hydroxide Coprecipitation-FAAS System for the Speciation of Chromium in Natural Waters
نویسندگان
چکیده
منابع مشابه
Speciation Analysis of Chromium in Waters
The total content of chromium in natural waters does not generally exceed several μg/l. Thus, it is obvious that various forms of chromium will occur at the levels of tenths or hundredths of μg/l. Their determination requires the application of a sufficiently sensitive method, but its specificity has an important role to play in the case of chemical individuals or selectivity in regard to speci...
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15 صفحه اولDetermination of chromium, copper and lead in river water by graphite-furnace atomic absorption spectrometry after coprecipitation with terbium hydroxide.
Coprecipitation with terbium hydroxide quantitatively recovered trace amounts of chromium(III), copper(II) and lead(II) at pH 8.4 - 10.8, 8.0 - 11.5 and 8.7 - 11.5, respectively. The precipitate was dissolved in 0.85 mol dm(-3) nitric acid, and the analytes were determined by graphite-furnace atomic absorption spectrometry (GF-AAS). The presence of terbium (up to 7 g dm(-3)) did not interfere w...
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ژورنال
عنوان ژورنال: Atomic Spectroscopy
سال: 2013
ISSN: 0195-5373,2708-521X
DOI: 10.46770/as.2013.06.003