caa a22 4500 445880910 CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00604-010-0528-5 doi (NATIONALLICENCE)springer-10.1007/s00604-010-0528-5 Anodic stripping voltammetric determination of silver ion at a carbon paste electrode modified with carbon nanotubes [Elektronische Daten] [Javad Tashkhourian, Sana Javadi, Fatemeh Ana] A carbon paste electrode (CPE) was modified with multi-wall carbon nanotubes and successfully applied to the determination of silver ion by differential pulse anodic stripping voltammetry. Compared to a conventional CPE, a remarkably improved peak current response and sensitivity is observed. The analytical procedure consisted of an open circuit accumulation step for 2min in −0.4V, this followed by an anodic potential scan between +0.2 and + 0.6V to obtain the voltammetric peak. The oxidation peak current is proportional to the concentration of silver ion in the range from 1.0 × 10−8 to 1.0 × 10−5molL−1, with a detection limit of 1.8 × 10−9molL−1 after an accumulation time of 120s. The relative standard deviation for 7 successive determinations of Ag(I) at 0.1μM concentration is 1.99%. The procedure was validated by determining Ag(I) in natural waters. Figure Differential pulse voltammogram (DPV) of Ag+ solution at MCPE Springer-Verlag, 2010 Anodic stripping voltammetry nationallicence Carbon nanotubes nationallicence CNT nationallicence Carbon paste electrode nationallicence Silver ion nationallicence Tashkhourian Javad Department of Chemistry, Collage of Science, Shiraz University, 71454, Shiraz, IR, Iran aut Javadi Sana Chemistry Department, Faculty of Science, Persian Gulf University, 75169, Boushehr, Iran aut Ana Fatemeh Chemistry Department, Faculty of Science, Persian Gulf University, 75169, Boushehr, Iran aut Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 79-84 0026-3672 173:1-2<79 2011 173 604 https://doi.org/10.1007/s00604-010-0528-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0528-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tashkhourian Javad Department of Chemistry, Collage of Science, Shiraz University, 71454, Shiraz, IR, Iran aut NATIONALLICENCE 700 1- Javadi Sana Chemistry Department, Faculty of Science, Persian Gulf University, 75169, Boushehr, Iran aut NATIONALLICENCE 700 1- Ana Fatemeh Chemistry Department, Faculty of Science, Persian Gulf University, 75169, Boushehr, Iran aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 79-84 0026-3672 173:1-2<79 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer