e-ISSN 2231-8542
ISSN 1511-3701

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The Differences in Thermal Breakdown of H2PtCl6 and cis- Pt(NH3)2Cl2 in Carbon Furnace Atomic Absorption.

Md. Jelas Haron and Wan Md. Zin Wan Yunus

Pertanika Journal of Tropical Agricultural Science, Volume 12, Issue 1, April 1989

Keywords: Thermal decomposition; platinum compound; carbon furnace atomic absorption spectrophotometry.

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A study using a combination of thermogravimetric and x-ray diffraction analyses has shown that a solution of hexachloroplatinic acid (H^tClJ, usually used as a standard in atomic absorption spectrophotometric (AAS) measurements, was broken down to yield volatile PtCl2 before being converted to metallic platinum. On the other hand, a solution ofcis-diaminodichloroplatinum(II) (cis-Pt(NH')2Cl2; cis-DDP) was converted to metallic platinum in a single step. The differences in their thermal decomposition mechanisms could be one of the reasons as to why carbon furnace atomic absorption spectrophotometric (CFAAS) signal from H^tCl^ was found to be lower than that of cis-DDP in aqueous solution.

ISSN 1511-3701

e-ISSN 2231-8542

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