Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
DETERMINATION OF BARIUM AND STRONTIUM BY CAPILLARY ZONE ELECTROPHORESIS USING AN ELECTROLYTE CONTAINING SULFONAZO-III
Autore:
MACKA M; PAULL B; ANDERSSON P; HADDAD PR;
Indirizzi:
UNIV TASMANIA,DEPT CHEM,GPO BOX 252C HOBART TAS 7001 AUSTRALIA UNIV TASMANIA,DEPT CHEM HOBART TAS 7001 AUSTRALIA
Titolo Testata:
Journal of chromatography
fascicolo: 1-2, volume: 767, anno: 1997,
pagine: 303 - 310
Fonte:
ISI
Lingua:
ENG
Soggetto:
ATOMIC-ABSORPTION SPECTROMETRY; METAL-IONS; SENSITIVE DETERMINATION; SEPARATION; CHROMATOGRAPHY; CHELATION; MATRICES; STACKING; PLASMA;
Keywords:
ELECTROLYTES; BARIUM; STRONTIUM; SULFONAZO III;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
M. Macka et al., "DETERMINATION OF BARIUM AND STRONTIUM BY CAPILLARY ZONE ELECTROPHORESIS USING AN ELECTROLYTE CONTAINING SULFONAZO-III", Journal of chromatography, 767(1-2), 1997, pp. 303-310

Abstract

Capillary zone electrophoresis has been applied to the separation anddetection of barium(II) and strontium(II) in the presence of excess levels of calcium and magnesium using an electrolyte containing sulfonazo III. The analytes were separated and detected as their anionic chelates, using direct spectrophotometric detection at 654 nm. Calibrationcurves for areas were linear in the range of 1.25 to 80 mu M with correlation coefficients r=0.9996 for both barium(II) and strontium(II). Precision (as %R.S.D.) was 0.8% and 0.4% for migration times and 1.2% and 2.9% for peak areas for barium(II) and strontium(II), respectively. Recovery was determined by the standard addition method and found tobe 108% for barium(II) and 104% for strontium(II). Limits of detection (based on a signal-to-noise ratio of 2 and a noise level of 2.8 10(-5) AU) of 0.35 mu M (0.048 mg dm(-3)) for barium(II) and 0.47 mu M (0.041 mg dm(-3)) for strontium(II) were possible in up to 100 000-fold excess levels of Ca2+ and Mg2+. The method was applied to the determination of barium(II) and strontium(II) in a mineral water sample.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/08/20 alle ore 17:01:26