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• W2070705731 abstract "A fast, sensitive and selective method for the determination of aluminium based on the reaction of the metal with pyrogallol red (PR) in the presence of tetrabutylammonium tetrafluoroborate (TBATFB) to form an Al(PR)(3)x9TBATFB complex which is adsorbed on the mercury electrode is presented. Under these conditions complexation of aluminium is rapid and no waiting period or heating of the sample is required. The reduction current of the accumulated complex is measured by scanning the potential in the cathodic direction. The variation of peak current with pH, adsorption time, adsorption potential, ligand and quaternary ammonium salt concentration, and some instrumental parameters, such as stirring rate in the accumulation stage, and step amplitude, pulse amplitude and step duration while obtaining the square wave voltamperograms were optimized. The best experimental parameters were pH 8.5, (NH(4)Ac-NH(3) buffer), C(PR)=25mumolL(-1), C(TBATFB) over 75mumolL(-1), t(ads)=60s, and E(ads)=-0.60V versus Ag/AgCl. A linear response is observed over the 0.0-30.0mugL(-1) concentration range, with a detection limit of 1.0mugL(-1). Reproducibility for 9.0mugL(-1) aluminium solution was 2.3% (n=6). Synthetic sea water and sea water reference material CRM-SW were used for validation measurements. Aluminium in urine samples of a volunteer who ingested 800mg of Al(OH)(3) was analyzed." @default.
• W2070705731 created "2016-06-24" @default.
• W2070705731 creator A5021910324 @default.
• W2070705731 creator A5056481544 @default.
• W2070705731 date "2007-09-30" @default.
• W2070705731 modified "2023-09-25" @default.
• W2070705731 title "Determination of aluminium in water samples by adsorptive cathodic stripping voltammetry in the presence of pyrogallol red and a quaternary ammonium salt" @default.
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• W2070705731 doi "https://doi.org/10.1016/j.talanta.2007.04.009" @default.
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