caa a22 4500 469129247 CHVBK 20180323133159.0 cr unu---uuuuu 170328e19920701xx s 000 0 eng 10.1007/BF00321836 doi (NATIONALLICENCE)springer-10.1007/BF00321836 Separation of Cr(III) and Cr(VI) using complexation of Cr(III) with 8-hydroxyquinoline and determination of both species in waters by ETA-AAS [Elektronische Daten] [E. Beceiro-Gonzalez, J. Barciela-Garcia, P. Bermejo-Barrera, A. Bermejo-Barrera] Summary: A method for the determination of chromium(III) and (VI) species has been studied and applied to mineral water samples. The chromium(III) was chelated with 0.1 mol/l 8-hydroxyquinoline in methyl alcohol, extracted in isobutyl methyl ketone and determined by ETA-AAS. The effects of the pH, extraction and heating time and amounts of the reagents required for the extraction were studied. A method for the determination of total chromium was optimized too, and the chromium(VI) can be calculated. The precision, sensibility, accuracy, graphite furnace program and interferences for both methods were also investigated. Springer-Verlag, 1992 Beceiro-Gonzalez E. Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Chemistry, E-15706, Santiago de Compostela, Spain aut Barciela-Garcia J. Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Chemistry, E-15706, Santiago de Compostela, Spain aut Bermejo-Barrera P. Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Chemistry, E-15706, Santiago de Compostela, Spain aut Bermejo-Barrera A. Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Chemistry, E-15706, Santiago de Compostela, Spain aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/7-8(1992-07-01), 301-305 0937-0633 344:7-8<301 1992 344 216 https://doi.org/10.1007/BF00321836 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00321836 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Beceiro-Gonzalez E. Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Chemistry, E-15706, Santiago de Compostela, Spain aut NATIONALLICENCE 700 1- Barciela-Garcia J. Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Chemistry, E-15706, Santiago de Compostela, Spain aut NATIONALLICENCE 700 1- Bermejo-Barrera P. Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Chemistry, E-15706, Santiago de Compostela, Spain aut NATIONALLICENCE 700 1- Bermejo-Barrera A. Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Chemistry, E-15706, Santiago de Compostela, Spain aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/7-8(1992-07-01), 301-305 0937-0633 344:7-8<301 1992 344 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer