ISSN:
1612-1112
Schlagwort(e):
Ion-exchange chromatography
;
Anion-exchange
;
Bismuth preconcentration
;
Environmental materials analysis
;
Graphite furnace atomic absorption spectrometry
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Summary Anion-exchange preconcentration techniques have been developed for traces of bismuth in environmental materials. Biological samples are opened up with a mixture of acids and silicates by fusion with a lithium carbonate-boric acid mixture. Bismuth is then separated from the sample matrices by anion-exchange from (a) oxalic acid-hydrochloric acid solution or (b) magnesium nitrate solution. Selectively adsorbed bismuth is removed from the column and quantified by graphite furnace atomic absorption spectrometry using palladium nitrate as a matrix modifier. Detection limit is 16 pg for 1% absorption. The developed methods were applied to several environmental reference materials for traces of bismuth.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02327908
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