Determination of low amounts of platinum in environmental and biological materials using thermospray nebulization inductively coupled plasma-mass spectrometry

Parent, Magali; Vanhoe, Hans; Moëns, Luc; Dams, Richard

doi:10.1007/s0021663540664

Cited by 60 publications

(30 citation statements)

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“…Considering the dramatically increasing platinum concentrations in traffic exposed areas [1][2][3][4], estimation of the bioavailability of platinum emitted from catalysts becomes important. Especially the interaction of the emitted, mainly metallic platinum [5] with soil substances has to be monitored closely, as the roadside soil is the first contact for the platinum and thus determines its possible way into the human food chain.…”

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confidence: 99%

Dissolution of metallic platinum as water soluble species by naturally occurring complexing agents

et al. 1998

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Abstract. Platinum is released into the environment as a result of surface abrasion from automobile catalysts during operation. Previous investigations showed that this finely dispersed metallic platinum is dissolved in organic matrices, e.g. a humic soil to a significantly high degree, resulting in possibly bioavallable Pt species. In this work several natural complexing agents (adenosine, ADP, ATP, L-His, humic acid fraction, LMet, pyrophosphate, and triphosphate) were treated with metallic platinum (as Pt black and as a Pt(0) containing tunnel dust) for 3-60 d. Some of the compounds used dissolved Pt(0) to a recognizable degree, whereas others were in the range of the aqueous blanks. Comparison of Pt black with a natural dust sample showed that L-methionine had in both cases the greatest effect after 60 d. Generally more Pt(0) was dissolved in the dust sample (finer dispersion and smaller particle size) than in the Pt-black used. By carrying out the experiment under natural conditions instead of in pure oxygen-, the amounts of dissolved platinum are about one order of magnitude lower.

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confidence: 99%

Dissolution of metallic platinum as water soluble species by naturally occurring complexing agents

et al. 1998

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“…Until now, the determination of ultra-traces of platinum has been the subject of most studies. [106][107][108][109][110][111][112][113][114][115][116] The direct digestion in HNO3 (borosilicate tubes, ca. 100˚C) had been used prior to the detection of platinum in blood, urine and tissue speciments by ICP-MS (DL of 0.1 µg l -1 ) and GFAAS (DL of 10 µg l -1 ).…”

Section: Continuedmentioning

confidence: 99%

“…Mixtures of HNO3 and HCl have been used for the digestion of tobacco and bean samples (high-pressure PTFE bombs), 108 and tree bark (MW heating) 115 prior to the detection of platinum by GFAAS (DL of 0.3 ng Pt) and ICP-MS (double focusing, DL of 0.03 ng g -1 ; quadrupole, DL of 0.2 ng g -1 ), respectively. Digestion in HClO4 and HNO3 preceded the determination of platinum in cisplatin and carboplatin by HPLC, 110 in plant tissue 111 and in mouse liver and corn leaves 112 by the ICP-MS technique. Microwave digestion procedures using HNO3 and H2O2 have been developed for the determination of platinum in wine (GFAAS) 114 as well as fish liver and mussel soft tissue (ICP-MS).…”

Section: Continuedmentioning

confidence: 99%

Sample Digestion Methods for the Determination of Traces of Precious Metals by Spectrometric Techniques

Balcerzak

2002

ANAL. SCI.

162

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Recent advances in digestion methods used in the analysis of precious metal samples by spectrometric techniques are reviewed. The applicability of a fire assay, a wet acid treatment, chlorination and alkaline oxidizing fusion to a quantitative recovery of metals from various materials is discussed. Data on the precious metal contents obtained by using particular digestion methods as well as UV-VIS spectrophotometry, atomic absorption spectrometry, atomic emission spectrometry and inductively coupled plasma mass spectrometry in the examination of various samples are tabulated.

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“…[17][18][19][20][21][22][23] However, the routine chromatographic methods have some disadvantages. The used derivatization reagents can not react with palladium, platinum and rhodium simultaneously, 17,18 or with low sensitivity, 19,20 or need long time heating for a complete reaction. 23 In our previous work, 2,4-dihydroxybenzylidenethiorhodanine (DHBTR) was synthesized, and it color reaction noble metal ions was carefully studied.…”

Section: Introductionmentioning

confidence: 99%

“…Several analytical techniques have been employed with this matrix in recent years and most of the advantages and drawbacks have been reviewed. [10][11][12][13][14][15][16][17][18][19][20] In previous work, some high performance liquid chromatography method for the determination of platinum group metals with derivatization has been reported. This has been proved to be a favorable and reliable technique.…”

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confidence: 99%

Simultaneous determination of palladium, platinum and rhodium by on-line column enrichment and HPLC with 2,4-dihydroxybenzylidenethiorhodanine as pre-column derivatization reagent

Dong¹,

Han²,

Hu³

et al. 2006

J. Braz. Chem. Soc.

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Um novo método para determinação simultânea de íons paládio, platina e ródio, como quelatos metal-DHBTR foi desenvolvido. Os íons paládio, platina e ródio foram derivatizados (pré-coluna) com 2,4-dihidroxibenzilidenotiorodanina (DHBTR) para formar quelatos coloridos. Os quelatos Pd-DHBTR, Pt-DHBTR e Rh-DHBTR são absorvidos na coluna de enriquecimento, quando injetados e transportados por uma fase móvel composta por solução tampão de ácido acético-acetato de sódio 0,05 mol L -1 (pH 3,5). Após o término do enriquecimento, ao acionar uma válvula de seis vias, os quelatos retidos foram carregados pela fase móvel, para a coluna analítica. A separação dos quelatos na coluna analítica foi satisfatória com acetonitrila 62% (v/ v) (contendo solução tampão de ácido acético-acetato de sódio (0,05 mol L -1 , pH 3,5) e 0,1% (m/v) de tritonX-100) como fase móvel. Os limites de detecção de paládio, platina e ródio são 3,6 ng L -1 , 3,2 ng L -1 e 4,5 ng L -1 , respectivamente. Este método foi aplicado para a determinação de paládio, platina e ródio em água, urina e amostras de solo, com bons resultados.A new method for the simultaneous determination of palladium, platinum and rhodium ions as metal-DHBTR chelates was developed. The palladium, platinum and rhodium ions were pre-column derivatized with 2,4-dihydroxybenzylidenethiorhodanine (DHBTR) to form colored chelates. The Pd-DHBTR, Pt-DHBTR and Rh-DHBTR chelates can be absorbed onto the front of the enrichment column when they were injected into the injector and sent to the enrichment column with a 0.05 mol L -1 sodium acetate-acetic acid buffer solution (pH 3.5) as mobile phase. After the enrichment had finished, by switching the six ports switching valve, the retained chelates were back-flushed by mobile phase and traveling towards the analytical column. These chelates separation on the analytical column was satisfactory with 62% (v/v) acetonitrile (containing 0.05 mol L -1 of pH 3.5 sodium acetate-acetic acid buffer salt and 0.1% (m/v) of tritonX-100) as mobile phase. The Limits of detection of palladium, platinum and rhodium are 3.6 ng L , respectively. This method was applied to the determination of palladium, platinum and rhodium in water, urine and soil samples with good results.Keywords: palladium, platinum, rhodium, 2,4-dihydroxybenzylidenethiorhodanine, high performance liquid chromatography, on-line enrichment IntroductionEnvironmental contamination by the platinum group elements (PGEs), mainly related to automotive catalytic converters, is exponentially increasing and reliable and accurate quantification is a mandatory task. [1][2][3][4] The wide use of palladium, platinum and rhodium not only in automotive catalytic converters but as a drug (Pt) and in food production (Pd) 5 has led to a more uncontrolled release of those metals in the environment, with respect to the one due to the traditional chemical industry. Moreover, the platinum group elements derived from automotive catalytic converters are released as nanocrystallites (particles with less than 3 mm in ...

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Determination of low amounts of platinum in environmental and biological materials using thermospray nebulization inductively coupled plasma-mass spectrometry

Cited by 60 publications

References 0 publications

Dissolution of metallic platinum as water soluble species by naturally occurring complexing agents

Dissolution of metallic platinum as water soluble species by naturally occurring complexing agents

Sample Digestion Methods for the Determination of Traces of Precious Metals by Spectrometric Techniques

Simultaneous determination of palladium, platinum and rhodium by on-line column enrichment and HPLC with 2,4-dihydroxybenzylidenethiorhodanine as pre-column derivatization reagent

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