caa a22 4500 445880023 CHVBK 20180317145539.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00604-011-0690-4 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0690-4 Trace determination of zirconium by adsorptive anodic stripping voltammetry of its complex with alizarin violet using a glassy carbon electrode modified with acetylene black-dihexadecyl hydrogen phosphate composite film [Elektronische Daten] [Peihong Deng, Yonglan Feng, Junjie Fei] We report on a novel electrochemical method for the sensitive determination of trace zirconium (Zr) at a glassy carbon electrode modified with a film of acetylene black containing dihexadecyl hydrogen phosphate and in the presence of alizarin violet (AV). The method is based on the preconcentration of the Zr(IV)-AV complex at a potential of −200mV (vs. SCE). The adsorbed complex is then oxidized, producing a response with a peak potential of 526mV. Compared to the poor electrochemical signal at the unmodified GCE, the electrochemical response of Zr(IV)-AV complex is greatly improved, as confirmed by the significant increase in peak current. The effects of experimental conditions on the oxidation current were studied and a calibration plot established. The oxidation current is linearly related to the Zr(IV) concentration in the 8.0pM to 10nM concentration range (cAV = 0.2μM) and 10nM ~0.6μM (cAV = 2.0μM), and the detection limit (S/N = 3) is as low as 4.0pM for a 3-min accumulation time. The method was successfully employed to the determination of zirconium in standard ore samples. Figure A glassy carbon electrode modified with acetylene black-dihexadecyl hydrogen phosphate composite film was used as a novel voltammetric sensor for zirconium(Zr) determination. The stripping peak current at 526mV exhibits good linearity with concentration of Zr in the range of 8.0pM to to 0.6μM. Springer-Verlag, 2011 Zirconium nationallicence Acetylene black nationallicence Dihexadecyl hydrogen phosphate nationallicence Alizarin violet nationallicence Adsorptive anodic stripping voltammetry nationallicence Deng Peihong Department of Chemistry and Material Science, Hengyang Normal University, 421008, Hengyang, People's Republic of China aut Feng Yonglan Department of Chemistry and Material Science, Hengyang Normal University, 421008, Hengyang, People's Republic of China aut Fei Junjie College of Chemistry, Xiangtan University, 411105, Xiangtan, People's Republic of China aut Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 233-240 0026-3672 175:3-4<233 2011 175 604 https://doi.org/10.1007/s00604-011-0690-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0690-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Deng Peihong Department of Chemistry and Material Science, Hengyang Normal University, 421008, Hengyang, People's Republic of China aut NATIONALLICENCE 700 1- Feng Yonglan Department of Chemistry and Material Science, Hengyang Normal University, 421008, Hengyang, People's Republic of China aut NATIONALLICENCE 700 1- Fei Junjie College of Chemistry, Xiangtan University, 411105, Xiangtan, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 233-240 0026-3672 175:3-4<233 2011 175 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer