Determination of Pt, Pd, Ru, Rh in Geochemical Samples by ICP-MS with Microwave Digestion and Dual-cloud Point Extraction

Yu SHEN; Ni ZHANG; Xiao-hong GAO; Zhan LI; Ri-sheng LI; Jian-bin ZHENG

doi:10.15898/j.cnki.11-2131/td.2016.03.007

2016 Vol. 35, No. 3

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Article navigation > Rock and Mineral Analysis > 2016 > 35(3): 259-264

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Yu SHEN, Ni ZHANG, Xiao-hong GAO, Zhan LI, Ri-sheng LI, Jian-bin ZHENG. Determination of Pt, Pd, Ru, Rh in Geochemical Samples by ICP-MS with Microwave Digestion and Dual-cloud Point Extraction[J]. Rock and Mineral Analysis, 2016, 35(3): 259-264. doi: 10.15898/j.cnki.11-2131/td.2016.03.007

Citation:

Yu SHEN, Ni ZHANG, Xiao-hong GAO, Zhan LI, Ri-sheng LI, Jian-bin ZHENG. Determination of Pt, Pd, Ru, Rh in Geochemical Samples by ICP-MS with Microwave Digestion and Dual-cloud Point Extraction[J]. Rock and Mineral Analysis, 2016, 35(3): 259-264. doi: 10.15898/j.cnki.11-2131/td.2016.03.007

Determination of Pt, Pd, Ru, Rh in Geochemical Samples by ICP-MS with Microwave Digestion and Dual-cloud Point Extraction

1.
Xi'an Northwest Geological Research Institute for Nonferrous Metals, Xi'an 710054, China
2.
Institute of Analytical Science, Northwest University, Shannxi Provincal Key Laboratory of Electroanalytical Chemistry, Xi'an 710069, China

More Information

Corresponding author: Jian-bin ZHENG, zhengjb@nwu.edu.cn

Received Date: 26 November 2015

Revised Date: 28 April 2016

Accepted Date: 20 May 2016

Abstract

Abstract

Traditional cloud point extraction methods commonly enrich elements in the viscous surfactant. However, the viscosity of the solution will adversely affect the detection signal of the plasma. Harmful agents such as methanol are usually adopted as a thinner to reduce the viscosity of the organic phase, but the organic component affects the stability of the plasma, and organic absorption on the injection tube will enhance elemental memory effect. These disadvantages limit the widespread application of Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) in cloud point extraction. A method to determine Pt, Pd, Ru, Rh in geochemical samples by ICP-MS based dual-cloud point extraction has been established, and is reported in this paper. After the microwave digestion procedure, first cloud point extraction is performed on the sample solution using DDTP as the sequestrant and Triton X-114 as the surfactant. HNO₃ is added into the organic phase, and second cloud point extraction is performed by heating so that Pt, Pd, Ru, Rh enter the water phase from the organic phase. Enrichment factors are 45, 33, 18, 35, and detection limits are 0.05, 0.02, 0.10 and 0.03 μg/L for Pt, Pd, Ru and Rh, respectively. The proposed method succeeds in the simultaneous enrichment of trace platinum group elements in complex matrix geochemical samples, improving the stability of the ICP-MS measurement.
- geochemical samples /
- platinum group elements /
- dual-cloud point extraction /
- organic phase /
- aqueous phase /
- Inductively Coupled Plasma-Mass Spectrometry

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References

[1]	Li Z,Feng Y.Determination of the Platinum Group Elements in Geological Samples by ICP-MS after NiS Fire Assay and Te Coprecipitation:Ultrasound-assisted Extraction of PGEs from Te Precipitate[J].Journal of Analytical Atomic Spectrometry,2006,21(1):90-93. Google Scholar
[2]	Li K J,Liu S J,Shao K.Determination of Ruthenium,Rhodium,Palladium,Iridium and Platinum in Copper-Nickel Sulfide Ores by Bismuth-Antimony Fire Assay[J].Chinese Journal of Analytical Chemistry,2014,42(6):909-912. Google Scholar
[3]	段玉然,李维华,徐羽梧.螯合树脂富集-激光气化等离子体发射光谱测定地质样品中铂族元素和金[J].分析化学,1994,22(4):366-369. Google Scholar Duan Y R,Li W H,Xu Y W.Determination of Platinum Group Elements and Gold in Geological Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry after Precon-centration Using Chelating Resin[J].Chinese Journal of Analytical Chemistry,1994,22(4):366-369. Google Scholar
[4]	甘树才,来雅文,段太成,等.DT-1016型阴离子交换树脂分离富集金铂钯[J].岩矿测试,2002,21(2):113-116. Google Scholar Gan S C,Lai Y W,Duan T C,et al.Separation and Preconcentration of Gold,Platinum and Palladium in Geological Samples with DT-1016 Anion Exchange Resin[J].Rock and Mineral Analysis,2002,21(2):113-116. Google Scholar
[5]	赵正,漆亮,黄智龙,等.地质样品中铂族元素的分析测定方法[J].地学前缘,2009,16(1):181-193. Google Scholar Zhao Z,Qi L,Huang Z L,et al.The Analytical Methods for Determination of Platinum Group Elements in Geological Samples[J].Earth Science Frontiers,2009,16(1):181-193. Google Scholar
[6]	梁沛,李静.浊点萃取技术在金属离子分离和富集以及形态分析中应用的进展[J].理化检验(化学分册),2006,42(7):582-587. Google Scholar Liang P,Li J.Progress of the Application of Cloud Point Extraction to the Separation and Enrichment of Metal Ions and to the Speciation Analysis[J].Physical Testing and Chemical Analysis (Part B:Chemical Analysis),2006,42(7):582-587. Google Scholar
[7]	Bezerra M A,Arruda M A Z,Ferreira S L C.Cloud Point Extraction as A Procedure of Separation and Pre-concentration for Metal Determination Using Spectro-analytical Techniques:A Review[J].Applied Spectroscopy Reviews,2005,40(4):269-299. Google Scholar
[8]	Ojeda C B,Rojas F S.Separation and Preconcentration by Cloud Point Extraction Procedures for Determination of Ions:Recent Trends and Applications[J].Microchimica Acta,2012,177(1-2):1-21. Google Scholar
[9]	Pytlakowska K,Kozik V,Dabioch M.Complex-forming Organic Ligands in Cloud-point Extraction of Metalions:A Review[J].Talanta,2013,110:202-228. Google Scholar
[10]	孙梅,刘桂建,吴强华.浊点萃取技术在环境样品痕量元素分析中的应用研究进展[J].环境化学,2013,32(6):1016-1024. Google Scholar Sun M,Liu G J,Wu Q H.Progress and Application of Cloud Point Extraction in the Analysis of Trace Elements in Environmental Samples[J].Environmental Chemistry,2013,32(6):1016-1024. Google Scholar
[11]	Oya A U,Zeynep Y G,Sabahattin D,et al.A Novel Ligand for Cloud Point Extraction to Determine Gold Content in Ore Samples[J].Environmental Chemistry Letters,2014,12(3):449-453. Google Scholar
[12]	Zia Mohammadi S,Mohammadnezhad M,Afzali D,et al.Selective Ligandless Cloud Point Extraction of Gold from Wastewater and Ore Samples[J].Current Analytical Chemistry,2014,10(4):473-478. Google Scholar
[13]	Li Z,Zhen W,Tai Z,et al.Cloud Point Extraction Coupled with Ultrasonic-assisted for Determination of Au and Ag in Water Samples by Flame Atomic Absorption Spectrometry[J].Asian Journal of Chemistry,2013,25(4):2208-2212. Google Scholar
[14]	Ghaedi M,Shokrollahi A,Niknam K,et al.Cloud Point Extraction and Flame Atomic Absorption Spectrometric Determination of Cadmium (Ⅱ),Lead (Ⅱ),Palladium (Ⅱ) and Silver (Ⅰ) in Environmental Samples[J].Journal of Hazardous Materials,2009,168(2-3):1022-1027. Google Scholar
[15]	Mortada W I,Hassanien M M,El-Asmy A A.Cloud Point Extraction of Some Precious Metals Using Triton X-114 and a Thioamide Derivative with a Salting-out Effect[J].Egyptian Journal of Basic & Applied Sciences,2014,1(3-4):184-191. Google Scholar
[16]	Laleh T,Yadollah Y,Homeyra E,et al.Development of Cloud Point Extraction for Simultaneous Extraction and Determination of Gold and Palladium Using ICP-OES[J].Journal of Hazardous Materials,2008,152(2):737-743. Google Scholar
[17]	Meeravali N N,Kumar S J,Jiang S J.An Acid Induced Mixed-micelle Mediated Cloud Point Extraction for the Separation and Pre-concentration of Platinum from Road Dust and Determination by Inductively Coupled Plasma Mass Spectrometry[J].Analytical Methods,2010,2(8):1101-1105. Google Scholar
[18]	张欣,刘崴,李冰,等.浊点萃取-电感耦合等离子体质谱法测定环境样品中的痕量铂钯[J].分析试验室,2012,31(11):63-66. Google Scholar Zhang X,Liu W,Li B,et al.Determination of Trace Platinum and Palladium in Environmental Samples by Cloud Point Extraction Coupled with Inductively Coupled Plasma-Mass Spectrometry[J].Chinese Journal of Analysis Laboratory,2012,31(11):63-66. Google Scholar
[19]	Peng G,He Q,Zhou G,et al.Determination of Heavy Metals in Water Samples Using Dual-cloud Point Extraction Coupled with Inductively Coupled Plasma Mass Spectrometry[J].Analytical Methods,2015,7(16):6732-6739. Google Scholar
[20]	Wang Y,Chen H,Han J,et al.A novel Cyclic Non-ligand Dual-cloud Point Extraction for Preconcentration of Cadmium(Ⅱ) through pH Regulation in Food and Environmental Matrices[J].New Journal of Chemistry,2015,39:9116-9123. Google Scholar
[21]	Arain M S,Kazi T G,Afridi H I,et al.Preconcentration and Determination of Manganese in Biological Samples by Dual-cloud Point Extraction Coupled with Flame Atomic Absorption Spectrometry[J].Journal of Analytical Atomic Spectrometry,2014,29(12):2349-2355. Google Scholar
[22]	王磊.双浊点萃取-ICP-AES测定环境样品中痕量金属元素的研究[D].杭州:浙江师范大学,2010. Google Scholar Wang L.Study on Determination of Trace Elements in Environmental Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry after Dual Cloud Point Extraction[D].Hangzhou:Zhejiang Normal University,2010. Google Scholar
[23]	Mortada W I,Ali A A,Hassanien M M.Cloud Point Extraction of Pd (Ⅱ),Au (Ⅲ),and Ag(Ⅰ) Prior to Their Determination by Graphite Furnace Atomic Absorption Spectrometry[J].Canadian Journal of Chemistry,2013,91(12):1219-1224. Google Scholar