caa a22 4500 469129867 CHVBK 20180323133201.0 cr unu---uuuuu 170328e19920901xx s 000 0 eng 10.1007/BF00324837 doi (NATIONALLICENCE)springer-10.1007/BF00324837 Extractive-spectrophotometric determination of manganese(II) using 3-bromobenzohydroxamic acid as chelating agent [Elektronische Daten] [L. Capitán-Vallvey, A. Molina-Diaz, M. Pascual-Reguera] Summary: A new extractive spectrophotometric method is described for determining trace amounts of Mn(II) based on its reaction at pH 10.2 with 3-bromobenzohydroxamic acid (3BrHA) and subsequent extraction into Adogen 464 in toluene. The apparent molar absorptivity of the 1:3:1 (Mn:3BrHA:Adogen 464) complex is 8.7×103 l·mol−1 cm−1 at 450 nm. Beer's law is obeyed from 0.5 to 6.0 mg·1−1 of Mn(II) in the aqueous phase with a C.V. of 1.2%. The detection limit is 0.18 mg·1−1. The method has been successfully applied to the determination of manganese in standard steel samples, natural water samples and plant material. Springer-Verlag, 1992 Capitán-Vallvey L. Department of Analytical Chemistry, Faculty of Sciences, University of Granada, E-18071, Granada, Spain aut Molina-Diaz A. Department of Analytical Chemistry, Faculty of Experimental Sciences, University of Granada, E-23071, Jaén, Spain aut Pascual-Reguera M. Department of Analytical Chemistry, Faculty of Experimental Sciences, University of Granada, E-23071, Jaén, Spain aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/1-2(1992-09-01), 30-33 0937-0633 344:1-2<30 1992 344 216 https://doi.org/10.1007/BF00324837 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00324837 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Capitán-Vallvey L. Department of Analytical Chemistry, Faculty of Sciences, University of Granada, E-18071, Granada, Spain aut NATIONALLICENCE 700 1- Molina-Diaz A. Department of Analytical Chemistry, Faculty of Experimental Sciences, University of Granada, E-23071, Jaén, Spain aut NATIONALLICENCE 700 1- Pascual-Reguera M. Department of Analytical Chemistry, Faculty of Experimental Sciences, University of Granada, E-23071, Jaén, Spain aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/1-2(1992-09-01), 30-33 0937-0633 344:1-2<30 1992 344 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer