caa a22 4500 445880856 CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00604-011-0552-0 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0552-0 Selective solid-phase extraction and separation of trace gold, palladium and platinum using activated carbon modified with ethyl-3-(2-aminoethylamino)-2-chlorobut-2-enoate [Elektronische Daten] [Zhifeng Tu, Shenci Lu, Xijun Chang, Zhenhua Li, Zheng Hu, Lijun Zhang, Hua Tian] Activated carbon was chemically modified with ethyl-3-(2-aminoethylamino)-2-chlorobut-2-enoate to obtain a material for selective solid-phase extraction of trace Au(III), Pd(II) and Pt(IV) prior to their determination by inductively coupled plasma atomic emission spectrometry. Experimental conditions such as effects of pH, shaking time, sample flow rate and volume, elution and interfering ions were studied. The ions Au(III), Pd(II) and Pt(IV) can be quantitatively adsorbed on the new sorbent from solution of pH1. The adsorbed ions were then eluted with 0.1molL−1 hydrochloric acid and containing 4% thiourea. Many common ions do not interfere. The adsorption capacity of the material is 305, 92, and 126mgg−1 for Au(III), Pd(II) and Pt(IV), respectively, and the detection limits are 5, 11 and 9ngmL−1. The relative standard deviation is less than 3.0% (n = 8) under optimum conditions. The method was validated by analyzing two certified reference materials and successfully applied to the preconcentration and determination of these ions in actual samples with satisfactory results. Figure Activated carbon was chemically modified with ethyl-3-(2-aminoethylamino)-2-chlorobut-2-enoate to obtain a material for selective solid-phase extraction of trace Au(III), Pd(II) and Pt(IV) prior to their determination by inductively coupled plasma atomic emission spectrometry. Parameters affecting solid-phase extraction were systematically studied. This new adsorbent exhibited good characteristics for separation and preconcentration of Au(III), Pd(II) and Pt(IV) in aqueous solution, such as excellent selectivity, fast adsorption equilibrium, high tolerance limits of potentially interfering ions, high enrichment factor and low costs. It also shows relatively high adsorption capacity when compared to several other adsorbents. In addition, the synthetic method of the adsorbent was very simple. Springer-Verlag, 2011 Activated carbon nationallicence Ethyl-3-(2-aminoethylamino)-2-chlorobut-2-enoate nationallicence Precious metal ions nationallicence Solid-phase extractant nationallicence Inductively coupled plasma atomic emission spectrometry nationallicence Tu Zhifeng Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Lu Shenci Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Chang Xijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Li Zhenhua Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Hu Zheng Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Zhang Lijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Tian Hua Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 231-239 0026-3672 173:1-2<231 2011 173 604 https://doi.org/10.1007/s00604-011-0552-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0552-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tu Zhifeng Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Lu Shenci Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Chang Xijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Li Zhenhua Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Hu Zheng Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Lijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Tian Hua Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 231-239 0026-3672 173:1-2<231 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer