Speciation of platinum by GFAAS using various possibilities of analytical signal enhancement

Serbin, Rastislav; Bazeľ, Yaroslav; Ružičková, Silvia

doi:10.1016/j.talanta.2017.06.078

Cited by 7 publications

(2 citation statements)

References 26 publications

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“…In a sequential extraction scheme for the selective extraction of Pt II and Pt IV from river or tap water, platinum ion associates were formed 72 in solution after reacting the chloro-anions of Pt with 5 mL of 5 × 10 −3 M NaSCN and 5 mL of 1 × 10 −3 M 1,3,3-trimethyl-2- [3-(1,3,3-trimethyl-1,3-dihydroindol-2-yliden)-propyl-1,3-dienyl]-3H-indolium chloride. These complexes were dispersed in the sample using DMF and then back extracted into 1 mL toluene before determination by ETAAS.…”

Section: Elemental Speciationmentioning

confidence: 99%

Atomic Spectrometry Update – a review of advances in environmental analysis

Bacon

Butler

Cairns

et al. 2019

J. Anal. At. Spectrom.

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Section: Elemental Speciationmentioning

confidence: 99%

Atomic Spectrometry Update – a review of advances in environmental analysis

Bacon

Butler

Cairns

et al. 2019

J. Anal. At. Spectrom.

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“…The main reserves of PGMs are the Bushveld Complex (Tanner et al, 2019), where platiniferous ores are obtained from the Merensky Reef (Creech et al, 2014). The PGMs are found in low concentrations, typically less than 10 g/t (Serbin, Bazel, and Ru, 2017). The low PGM grade of these ores contributes to their high market value.…”

Section: Introductionmentioning

confidence: 99%

A new preconcentration technique for the determination of PGMs and gold by fire assay and ICP-OES

Masasire

Rwere

Dzomba

et al. 2022

J. S. Afr. Inst. Min. Metall.

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Accurate determination of platinum group metals (PGMs) and gold (Au) has always proven to be a difficult task, due to their low concentrations in platiniferous ores. The most common preconcentration technique used in analysis of these metals is fire assay with a flux containing nickel or lead. This technique can be improved by using co-collectors. Here we hypothesise that Fe, Co, and Cu can be used as co-collectors to enhance separation and preconcentration of PMGs and gold by fire assay. To test this hypothesis, geological exploration samples from Siyanda Union Mine (Northam, South Africa) were analysed by an inductively coupled plasma-optical emission spectrometer (ICP-OES) for PGMs (Pt, Pd, and Rh) and Au. A control sample (certified reference material AMIS 0426) was also analysed by the same technique. The PGM and Au recoveries from the control sample ranged from 83% to 105% for all three co-collectors, with relative standard deviations less than 10% for the control sample and 7% for the geological samples. The PGM and Au recoveries by Fe and Co co-collectors were modestly higher than that of the Cu-collector. These results indicate that Fe and Co are better co-collectors than Cu, presumably due to the loss of analyte when using Cu. Taken together, Fe and Co co-collectors can be viable alternatives for analysis of PGMs and gold using the fire assay method.

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