caa a22 4500 469129719 CHVBK 20180323133201.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF00325122 doi (NATIONALLICENCE)springer-10.1007/BF00325122 Kinetic-potentiometric determination of copper in real samples with a new antimony(V) ion-selective electrode [Elektronische Daten] [C. Sánchez-Pedreño, J. Ortuño, J. Martinez-Ródenas] Summary: A sensitive and selective kinetic method for the determination of copper is proposed. It is based on the catalytic effect of copper on the reaction between hexachloroantimonate(V) and hydroxylamine at pH 4.4 (acetic-acetate buffer). The rate of the reaction is potentiometrically monitored with a new antimony(V) ion-selective electrode using 1,2,4,6-tetraphenyl-pyridinium hexachloroantimonate(V) as electroactive material in a poly-(vinyl chloride) membrane. The proposed method allows the determination of copper(II) concentrations in the 5-510 ng ml−1 range, with a variation coefficient of 3.5%. The method has satisfactorily been applied to a variety of real samples. Springer-Verlag, 1992 Sánchez-Pedreño C. Department of Analytical Chemistry, Faculty of Sciences, University of Murcia, E-30071, Murcia, Spain aut Ortuño J. Department of Analytical Chemistry, Faculty of Sciences, University of Murcia, E-30071, Murcia, Spain aut Martinez-Ródenas J. Department of Analytical Chemistry, Faculty of Sciences, University of Murcia, E-30071, Murcia, Spain aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/3(1992-03-01), 100-103 0937-0633 344:3<100 1992 344 216 https://doi.org/10.1007/BF00325122 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00325122 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sánchez-Pedreño C. Department of Analytical Chemistry, Faculty of Sciences, University of Murcia, E-30071, Murcia, Spain aut NATIONALLICENCE 700 1- Ortuño J. Department of Analytical Chemistry, Faculty of Sciences, University of Murcia, E-30071, Murcia, Spain aut NATIONALLICENCE 700 1- Martinez-Ródenas J. Department of Analytical Chemistry, Faculty of Sciences, University of Murcia, E-30071, Murcia, Spain aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/3(1992-03-01), 100-103 0937-0633 344:3<100 1992 344 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer