caa a22 4500 445881259 CHVBK 20180317145544.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00604-011-0643-y doi (NATIONALLICENCE)springer-10.1007/s00604-011-0643-y Activated carbon functionalized with 1-amino-2-naphthol-4-sulfonate as a selective solid-phase sorbent for the extraction of gold(III) [Elektronische Daten] [Li Zhang, Zhenhua Li, Xianghui Du, Xijun Chang] We have developed a new method for the separation, preconcentration, and determination of gold(III) ion in water samples. It is based on the use of activated carbon that was modified with 1-amino-2-naphthol-4-sulfonate to yield a solid-phase sorbent. The experimental conditions for adsorption were optimized. Gold(III) can be quantitatively adsorbed at pH 3, and adsorbed gold(III) can be completely eluted with 2.0mL of a 2% solution of thiourea in 1M hydrochloric acid. The enrichment factor is 200, and the maximum adsorption capacity is 32mgg−1. Gold ion was then determined by inductively coupled plasma optical emission spectrometry. The detection limit (3σ) is 0.26μgL−1, and the relative standard deviation is 3.1% (n = 8). Common potentially interfering ions do not interfere with the adsorption and determination of the analytes. The method displays selectivity, sensitivity and reproducibility, and was successfully applied to the determination of reference materials and water samples. Graphical Abstract A new sorbent was prepared by using 1-amino-2-naphthol-4-sulfonate modified activated carbon. The experimental conditions on adsorption of Au(III) was studied. The new sorbent showed high selectivity, sensitivity and adsorption capacity compared to other methods reported for preconcentration of Au(III). The method was applied to real samples with satisfactory results. Springer-Verlag, 2011 Solid-phase extraction nationallicence 1-amino-2-naphthol-4-sulfonate nationallicence Activated carbon nationallicence Gold determination nationallicence Inductively coupled plasma optical emission spectrometry nationallicence Zhang Li 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 Du Xianghui Northwest Normal University, 730070, Lanzhou, People's Republic of China aut Chang Xijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Microchimica Acta Springer Vienna 174/3-4(2011-09-01), 391-398 0026-3672 174:3-4<391 2011 174 604 https://doi.org/10.1007/s00604-011-0643-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0643-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Li 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- Du Xianghui Northwest Normal University, 730070, 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 773 0- Microchimica Acta Springer Vienna 174/3-4(2011-09-01), 391-398 0026-3672 174:3-4<391 2011 174 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer