Determination of Pt and Pd in Copper Concentrate Ores by ICP-MS Using D<sub>290</sub> Anion Exchange Resin and Activated Charcoal for Concentration

De-xin HU; Song-hai GU; Hai REN; De-qi MA; Li-fei YANG; Ming-yue SU

2013 Vol. 32, No. 4

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Article navigation > Rock and Mineral Analysis > 2013 > 32(4): 572-575

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De-xin HU, Song-hai GU, Hai REN, De-qi MA, Li-fei YANG, Ming-yue SU. Determination of Pt and Pd in Copper Concentrate Ores by ICP-MS Using D290 Anion Exchange Resin and Activated Charcoal for Concentration[J]. Rock and Mineral Analysis, 2013, 32(4): 572-575.

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De-xin HU, Song-hai GU, Hai REN, De-qi MA, Li-fei YANG, Ming-yue SU. Determination of Pt and Pd in Copper Concentrate Ores by ICP-MS Using D₂₉₀ Anion Exchange Resin and Activated Charcoal for Concentration[J]. Rock and Mineral Analysis, 2013, 32(4): 572-575.

Determination of Pt and Pd in Copper Concentrate Ores by ICP-MS Using D₂₉₀ Anion Exchange Resin and Activated Charcoal for Concentration

1.
Minerals and Metallic Materials Inspection Center, Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China
2.
Tianjin Inspection and Test Development Service Co., LTD, Tianjin 300457, China

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Corresponding author: Song-hai GU, gush01@tjciq.gov.cn

Received Date: 07 November 2012

Accepted Date: 06 February 2013

Abstract

Abstract

Determination of trace elements in minerals usually requires pre-concentration and separation with many spectral line interferences during measurement. The concentrate ores were calcined at high temperature to remove the C and S. The calcinates were then digested by using the HCl-auqa regia-HF acids system. The D₂₉₀ anion exchange resin and activated charcoal procedures were conducted to enrich Pt and Pd. The contents of Pt and pd were obtained by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) with internal standard elements of Y, In and Bi and measured isotopes of ¹⁰⁵Pd and ¹⁹⁵Pt. The absorption property and separation conditions of D₂₉₀ anion exchange resin to trace Pt and Pd in copper concentrate ores were studied. The enrichment effects of Pt and Pd were above 90%, the recoveries were 92.0% and 96.0%, and the relative standard deviations (RSD, n=6) were smaller than 4%. The detection limits of the method were 0.126 ng/g and 0.105 ng/g for Pt and Pd. The presented method mostly reduced the inferences from other ions to the target elements of Pt and Pd. Moreover, the collision reaction between the internal standard elements and high purity Ar effectively reduced the matrix effect and isobaric interference. Five random geological samples were analyzed by this method in comparison with the method of NiS fire assay ICP-MS and the established method had the advantages of simple pretreatment and high enrichment of Pt and Pd with lower detection limits.
- copper concentrate ores /
- platinum /
- palladium /
- D₂₉₀ anion exchange resin /
- activated charcoal /
- Inductively Coupled Plasma-Mass Spectrometry

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