caa a22 4500 445880120 CHVBK 20180317145540.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00604-011-0680-6 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0680-6 A nanocomposite made from conducting organic polymers and multi-walled carbon nanotubes for the adsorption and separation of gold(III) ions [Elektronische Daten] [Mohammad Nabid, Roya Sedghi, Roya Hajimirza, Hossein Oskooie, Majid Heravi] We describe a new method for the separation and preconcentration of traces of Au(III) in environmental samples. Sorbents made from modified multiwalled carbon nanotubes and conducting polymers (PANI and PEDOT) were used for solid-phase extraction. The Au(III) ions are adsorbed as a result of the interaction with the electron pairs of =N- and -S- groups. Effects of pH value, flow rate and volume of sample, type, volume and concentration of eluent, and the adsorption capacity were investigated. The maximum adsorption capacity of MWCNTs/PANI and MWCNTs/PEDOT are 159 and 176mgg−1, and the detection limits of this method are below 0.3 and 0.5ngmL−1, respectively. The procedure was successfully applied to the determination of traces of Au(III) in a reference material and in environmental samples. Figure The multiwalled carbon nanotubes/conducting polymers (PANI and PEDOT) were used for solid-phase extraction of Au(III) ions. The Au(III) adsorbed on macromolecules chains; resulting from sharing an electron pair of = N- and -S- groups of conducting polymers with gold ions. The final results demonstrate that nanocomposites are convenient for preconcentration and determination of gold from environmental samples. Springer-Verlag, 2011 MWCNTs/PANI nanocomposite nationallicence MWCNTs/PEDOT nanocomposite nationallicence Solid phase extraction nationallicence Gold nationallicence Nabid Mohammad Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran, Iran aut Sedghi Roya Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran, Iran aut Hajimirza Roya Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran, Iran aut Oskooie Hossein Department of Chemistry, School of Science, Azzahra University, Vanak, Tehran, Iran aut Heravi Majid Department of Chemistry, School of Science, Azzahra University, Vanak, Tehran, Iran aut Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 315-322 0026-3672 175:3-4<315 2011 175 604 https://doi.org/10.1007/s00604-011-0680-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0680-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nabid Mohammad Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran, Iran aut NATIONALLICENCE 700 1- Sedghi Roya Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran, Iran aut NATIONALLICENCE 700 1- Hajimirza Roya Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran, Iran aut NATIONALLICENCE 700 1- Oskooie Hossein Department of Chemistry, School of Science, Azzahra University, Vanak, Tehran, Iran aut NATIONALLICENCE 700 1- Heravi Majid Department of Chemistry, School of Science, Azzahra University, Vanak, Tehran, Iran aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 315-322 0026-3672 175:3-4<315 2011 175 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer