caa a22 4500 445881593 CHVBK 20180317145545.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s00604-011-0603-6 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0603-6 Selective solid-phase extraction of trace Au(III), Pd(II) and Pt(IV) using activated carbon modified with 2,6-diaminopyridine [Elektronische Daten] [Dandan Li, Xijun Chang, Zheng Hu, Qihui Wang, Zhifeng Tu, Ruijun Li] A new sorbent was prepared by immobilization of 2,6-diaminopyridine on activated carbon and then used as a solid-phase extractant for trace Au(III), Pd(II) and Pt(IV) before their determination by ICP-AES. Effects of pH, the shaking time, the sample flow rate and volume, the elution condition and the potentially interfering ions were investigated. The optimum pH value is 1. The maximum static adsorption capacity for the three ions is 202.7, 38.5 and 30.1mgg−1, respectively. The adsorbed metal ions can be completely eluted by 2mL of the eluent solution that contains 0.05molL−1 HCl and 5% thiourea. Common other ions do not interfere. The detection limits (3σ) are 0.16, 0.33 and 0.29ngmL−1, respectively. The relative standard deviation (RSD) was lower than 3.0% (n = 8). The new sorbent was applied to the preconcentration of the three ions in ore and rock samples with satisfactory results. Figure Au(III), Pd(II), Pt(IV) are absorbed at pH 1. The maximum static adsorption capacity is 202.7, 38.5 and 30.1mgg−1. The eluent is 2mL of the eluent solution that contains 0.05molL−1 HCl and 5% thiourea. The relative standard deviation (RSD) was lower than 3.0% (n = 8). Springer-Verlag, 2011 Solid-phase extraction nationallicence Activated carbon modified with 2,6-diaminopyridine nationallicence Au(III) nationallicence Pd(II) nationallicence Pt(IV) nationallicence Li Dandan 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 Hu Zheng Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Wang Qihui Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Tu Zhifeng Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Li Ruijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Microchimica Acta Springer Vienna 174/1-2(2011-07-01), 131-136 0026-3672 174:1-2<131 2011 174 604 https://doi.org/10.1007/s00604-011-0603-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0603-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Dandan 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- Hu Zheng Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Wang Qihui Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Tu Zhifeng Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Li Ruijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 174/1-2(2011-07-01), 131-136 0026-3672 174:1-2<131 2011 174 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer