caa a22 4500 467996180 CHVBK 20180323112558.0 cr unu---uuuuu 170328e19900101xx s 000 0 eng 10.1007/BF01244495 doi (NATIONALLICENCE)springer-10.1007/BF01244495 Application of adsorptive stripping voltammetry for indirect measurement of nonelectroactive ions using competitive complex formation reactions [Elektronische Daten] [Joseph Wang, Božidar Grabarić] It is shown that adsorptive stripping voltammetry can be used for indirect determinations of non-electroactive species. Determination of fluoride was selected to demonstrate this concept which can be used in environmental, clinical and other applications. The fluoride determination is based on competitive complex formation reactions between zirconium and organic ligands, viz. Alizarin Red S (ARS) and Acid Alizarin Violet N (AAVN) and fluoride ions in acidic media (0.1M HNO3 or HClO4). Free ARS ligand is adsorbable on mercury electrode and its voltammetric peak increases with fluoride concentration due to ARS displacement from the Zr-ARS complexes with fluoride forming more stable Zr-fluoride complexes. Using AAVN as a ligand Zr-AAVN complexes are adsorbable on a mercury electrode and the voltammetric peak decreases with increasing fluoride concentration due to formation of more stable Zr-fluoride complexes. The sensitivity of the method is down to 0.1 μM of fluoride. Overall fluoride recovery from synthetic water samples at micromolar concentration level was within 1% of the concentration added, with overall reproducibility of 5 independent measurements of ± 2.5% and ± 1.8% with ARS and AAVN ligand, respectively. Some interferences possibly present in water have been investigated. Springer-Verlag, 1990 adsorptive stripping voltammetry nationallicence fluoride determination nationallicence zirconium determination nationallicence zirconium complexes nationallicence Alizarin Red S nationallicence Acid Alizarin Violet N nationallicence Wang Joseph Department of Chemistry, New Mexico State University, 88003, Las Cruces, NM, USA aut Grabarić Božidar Laboratory of General and Inorganic Chemistry, Faculty of Technology, University of Zagreb, Pierottijeva 6, YU-41000, Zagreb, Yugoslavia aut Microchimica Acta Springer-Verlag 100/1-2(1990-01-01), 31-40 0026-3672 100:1-2<31 1990 100 604 https://doi.org/10.1007/BF01244495 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01244495 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Joseph Department of Chemistry, New Mexico State University, 88003, Las Cruces, NM, USA aut NATIONALLICENCE 700 1- Grabarić Božidar Laboratory of General and Inorganic Chemistry, Faculty of Technology, University of Zagreb, Pierottijeva 6, YU-41000, Zagreb, Yugoslavia aut NATIONALLICENCE 773 0- Microchimica Acta Springer-Verlag 100/1-2(1990-01-01), 31-40 0026-3672 100:1-2<31 1990 100 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer