caa a22 4500 463218655 CHVBK 20180405153205.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1134/S1061934807010121 doi (NATIONALLICENCE)springer-10.1134/S1061934807010121 Determination of palladium, platinum, and rhodium by HPLC with online column enrichment using 4-carboxylphenyl-thiorhodanine as a precolumn derivatization reagent [Elektronische Daten] [H. Lin, Z. Huang, Q. Hu, G. Yang, G. Zhang] In the present work, 4-carboxylphenyl-thiorhodanine (CPTR) was synthesized. A new method for the simultaneous determination of palladium, platinum, and rhodium ions as metal-CPTR chelates was developed using rapid column high-performance liquid chromatography equipped with an online enrichment capability. Palladium, platinum, and rhodium ions were precolumn-derivatized with CPTR to form colored chelates. The Pd-CPTR, Pt-CPTR, and Rh-CPTR chelates can absorbed onto the front of the enrichment column (ZORBAX Stable Bound, 4.6 × 10 mm, 1.8 μm) when they are injected with a buffer solution of 0.05 M sodium acetate-acetic acid (pH 3.5) as mobile phase. After the enrichment had finished, by switching the six-port switching valve, the retained chelates were back-flushed by mobile phase and moved towards the analytical column. The chelate separation on the analytical column (ZORBAX Stable Bound, 4.6 × 50 mm, 1.8 μm) was achieved with 46% acetonitrile (containing 0.05 M of pH 3.5 sodium acetate-acetic acid buffer and 0.01 M tritonX-100) as mobile phase. The palladium, platinum, and rhodium were separated completely within 2 min. The detection limits (S/N = 3) of palladium, platinum, and rhodium are 1.4, 1.6, and 2.0 ng/L, respectively. The method was applied to the determination of palladium, platinum, and rhodium in water, urine, and soil samples with good results. Pleiades Publishing, Ltd., 2007 Lin H. Department of Chemistry, Yunnan University, 650091, Kunming, China aut Huang Z. Department of Chemistry, Yunnan University, 650091, Kunming, China aut Hu Q. Department of Chemistry, Yunnan University, 650091, Kunming, China aut Yang G. Department of Chemistry, Yunnan University, 650091, Kunming, China aut Zhang G. Guangzhou Institute of Geochemistry, China Academy of Sciences, 510640, Guangzhou, China aut Journal of Analytical Chemistry Nauka/Interperiodica 62/1(2007-01-01), 58-62 1061-9348 62:1<58 2007 62 10809 https://doi.org/10.1134/S1061934807010121 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061934807010121 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lin H. Department of Chemistry, Yunnan University, 650091, Kunming, China aut NATIONALLICENCE 700 1- Huang Z. Department of Chemistry, Yunnan University, 650091, Kunming, China aut NATIONALLICENCE 700 1- Hu Q. Department of Chemistry, Yunnan University, 650091, Kunming, China aut NATIONALLICENCE 700 1- Yang G. Department of Chemistry, Yunnan University, 650091, Kunming, China aut NATIONALLICENCE 700 1- Zhang G. Guangzhou Institute of Geochemistry, China Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 62/1(2007-01-01), 58-62 1061-9348 62:1<58 2007 62 10809 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer