The determination of platinum and palladium in rocks and soils by electrothermal atomic absorption spectrometry of extracts of their iodo complexes

✍ Scribed by Robert R. Brooks; Bee-Saik Lee

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 347 KB
• Volume: 204
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)86371-0

✦ Synopsis

The method developed for determining platinum and palladium in rocks and soils is based on extraction of iodo complexes of these elements into methyl isobutyl ketone (MIBK) , followed by electrothermal atomic absorption spectrometry of the extracts. The limit of detection is 10 ng gg' for platinum and 3 ng gg' for palladium. Analysis of the standard noble metal ore PTC-1 with recommended values of 12.7 pug g-' for palladium and 3.0 pg gg' for platinum gave precisions of 4.4% and 5.6%, respectively, and deviations of 5.0% and 1.2% from the recommended values. The method is applicable to the determination of both elements in a wide variety of rocks and soils.