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Simultaneous Determination of Palladium, Platinum, Rhodium and Gold by On-line Solid Phase Extraction and High Performance Liquid Chromatography with 5-(2-Hydroxy-5-nitrophenylazo)thiorhodanine as Pre-column Derivatization Regents by Qiufen Hu; Xiangjun Yang; Zhangjie Huang; Jing Chen; Guangyu Yang is a Chemistry article available to read on EtoBox.

What is Simultaneous Determination of Palladium, Platinum, Rhodium and Gold by On-line Solid Phase Extraction and High Performance Liquid Chromatography with 5-(2-Hydroxy-5-nitrophenylazo)thiorhodanine as Pre-column Derivatization Regents about?

In this paper, 5-(2-hydroxy-5-nitrophenylazo)thiorhodanine (HNATR) was synthesized. A new method for the simultaneous determination of palladium, platinum, rhodium and gold ions as metal-HNATR chelates was developed using a rapid analysis column high performance liquid chromatography equipped with on-line solid phase extraction technique. The samples (Water, human urine, geological samples and soil) were digested by microwave acid-digestion. The palladium, platinum, rhodium and gold ions in the digested samples were pre-column derivatized with HNATR to form colored chelates. The Pd-HNATR, Pt-HNATR, Rh-HNATR and Au-HNATR chelates can be absorbed onto the front of the enrichment column when they were injected into the injector and sent to the enrichment column [Zorbax Stable Bound, 10 mm x 4.6 mm, 1.8 microm] with a buffer solution of 0.05 mol L(-1) phosphoric acid as mobile phase. After the enrichment had finished, by switching the six ports switching valve, the retained chelates were back-flushed by mobile phase and travelling towards the analytical column. These chelates separation on the analytical column [Zorbax Stable Bound, 10 mm x 4.6 mm, 1.8 microm] was satisfactory with 72%

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Author

Qiufen Hu; Xiangjun Yang; Zhangjie Huang; Jing Chen; Guangyu Yang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-3778)

Published

2005

Language

EN

Field

Chemistry (Physical Sciences)