Trace element determination in crude oil and its fractions by inductively coupled plasma mass spectrometry using ultrasonic nebulization of toluene solutions

Duyck, Christiane; Miekeley, Norbert; Silveira, Carmem Lúcia P. da; Szatmári, Péter

doi:10.1016/s0584-8547(02)00171-4

Cited by 149 publications

(90 citation statements)

References 19 publications

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“…Up to date, several elements (e.g. V, Fe, Co, Ni, Cu) from the first-row transition series, which are preferentially used in geochemical studies of elemental distribution and source effects, have been determined in crude oils by techniques such as atomic absorption spectrometry, X-ray fluorescence spectrometry, ICP OES, and more recently, by ICP-MS. [4][5][6][7][8][9][10] Trace elements in crude oil are distributed between chromatographic fractions, such as aromatics, resins and the high molecular weight compounds of asphaltenes. 11 Asphaltenes are dissolved in the bulk oil by micelle formation with the resin and are insoluble in n-alkanes.…”

Section: Introductionmentioning

confidence: 99%

Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil

Duyck¹,

Miekeley²,

Fonseca³

et al. 2008

J. Braz. Chem. Soc.

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Perfis de distribuição de elementos traços foram determinados em óleos crus de reservatórios biodegradados situados ao longo de um caminho de migração secundaria (Bacia de Potiguar, Brasil). As amostras foram fracionadas em asfaltenos, parafinas, aromáticos e polares e resina para determinação de 22 elementos traços por ICP-MS. Esses se concentram nas frações de resina e asfaltenos, exceto V e Ni também encontrados na fração de aromáticos e polares. V, Co, Ni e Mo foram influenciados por processos de biodegradação e acumulam-se nas amostras mais afetadas e de maior distância de migração. Variações semelhantes da razão Ni/V nos aromáticos e polares e dos índices de homohopano e gamacerano nas parafinas evidenciaram também a influencia da biodegradação. As distribuições elementares foram similares para os óleos e seus asfaltenos, sugerindo que esses últimos, mais refratários que o óleo original, possam ser usados como uma ferramenta geoquímica inorgânica robusta de impressão digital para caracterização de óleos.Trace element distribution patterns were determined in crude oils from onshore biodegraded reservoirs along a secondary migration trend (Potiguar Basin, Brazil). Samples were fractionated into asphaltenes, paraffins, aromatics and polars and resins for the determination of 22 trace elements by ICP-MS. Most of them are strongly enriched in the resin and asphaltene fractions, but V and Ni are also associated with the aromatic and polar fractions. V, Co, Ni and Mo were influenced by biodegrading processes and accumulate in the most affected and migrated samples. Variations of the Ni/V ratio in aromatics and polars, matching those of homohopane and gammacerane indexes in paraffin, evidenced also the influence of biodegradation. Very similar elemental distribution patterns in oil and corresponding asphaltenes were observed, suggesting that the latter fraction, more refractory than the original oil, can be used as a robust inorganic geochemical fingerprint for oil characterization.

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Section: Introductionmentioning

confidence: 99%

Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil

Duyck¹,

Miekeley²,

Fonseca³

et al. 2008

J. Braz. Chem. Soc.

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“…Moreover, severe matrix interferences have already been observed during the analysis of organic solutions in ICP-OES due to plasma interactions (Botto, 1987). In order to minimize these problems, five solutions are globally described in the literature with organic injection using micro-nebulisation system (Dreyfus et al, 2005;Botto, 2002), desolvatation using ultrasonic nebulisation and membrane (Botto and Zhu, 1996;Duyck et al, 2002), digestion of the sample (Wondimu et al, 2000;Heilmann et al, 2004, Lopez andMonaco, 2004), microemulsion (Souza et al, 2004;Wang et al, 2003) for introduction of an aqueous phase in the plasma and finally electrothermal vaporization (Resano et al, 2001;Saint'Pierre et al, 2002). Micronebulization and ultrasonic nebulisation are sometimes used in combination with oxygen addition into the plasma, which is particularly recommended with ICP-MS detection.…”

Section: Introductionmentioning

confidence: 99%

Trace Metal Analysis in Petroleum Products: Sample Introduction Evaluation in ICP-OES and Comparison with an ICP-MS Approach

Lienemann

Dreyfus

Pécheyran³

et al. 2007

Oil & Gas Science and Technology - Rev. IFP

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“…The ranges of Mo and Re concentrations seen in this study ( An anthropogenic enhancement of Mo and Re delivery to modern oceans might be expected on the basis of the high concentrations of these metals in fossil fuels (Bertine and Goldberg, 1971;Poplavko et al, 1974;Duyck et al, 2002;Selby et al, 2005Selby et al, , 2007a. Both Mo (Moyse, 2000) and Re (Chang, 1998) are also found in fuel processing catalysts, and the use of Re in brake liners is thought to be the source for high concentrations of Re (up to 10 ng g −1 ) in road dusts (Meisel and Stotter, 2007).…”

Section: Calculation Of Present-day Average Mo and Re Concentrations mentioning

confidence: 58%

Surface-cycling of rhenium and its isotopes

Miller¹

2009

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The application of elemental and isotopic metal palaeoredox tracers to the geologic past rests on an understanding of modern metal cycles. This study reevaluates the surface-cycling of Mo and Re in near-surface reservoirs. Revised river averages of Mo and Re are 1.8-and 7.9-fold larger than previous estimates. The river concentrations of 8.0 nmol Mo kg −1 and 11.2 pmol Re kg −1 (pre-anthropogenic), result in shorter seawater response times of 4.4 × 10 5 yr (τ Mo ) and 1.3 × 10 5 yr (τ Re pre-anthropogenic). These metals, especially Re, are more sensitive to changing source and sink fluxes than previously thought.Evaluation of Mo and Re concentrations in high temperature fluids from the Manus Basin indicate that Re is essentially absent from the hydrothermal end member and Mo is present at concentrations considerably lower than ambient seawater. The sink fluxes represented by hydrothermal circulation are negligible in comparison to the revised river source fluxes.Anthropogenic contributions to the Re flux to seawater are seen in the high concentrations of certain impacted water samples such as those associated with mining sites. It may also be seen in a significant, variable, Re enrichment feature in the Hudson River estuary. This Re enrichment feature is not the result of estuarine mixing or the remobilization of sediment-hosted Re. On the basis of a Re -SO 2− 4 correlation we are able to quantify and correct for the anthropogenic Re, which corresponds to ∼33% of the modern river average.This study documents the development of an analytical method for stable Re isotopes. Though complicated by analyte requirements and 187 Re -187 Os decay, Re isotope measurements have a reproducibility of ±0.05 for analyte concentrations of 20 ng Re mL −1 . Total Re isotopic variability to date is 0.9 . This includes 0.3 across five commercially available Re products, and 0.5 across a black shale weathering profile. δ 187 Re variability across the weathering profile was systematic with the most weathered samples showing the most significant 187 Re depletions. The 3 Re isotopic weathering profile is well described by both two-component mixing and Rayleigh fractionation. There are currently insufficient data to discriminate between the two models.

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Trace element determination in crude oil and its fractions by inductively coupled plasma mass spectrometry using ultrasonic nebulization of toluene solutions

Cited by 149 publications

References 19 publications

Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil

Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil

Trace Metal Analysis in Petroleum Products: Sample Introduction Evaluation in ICP-OES and Comparison with an ICP-MS Approach

Surface-cycling of rhenium and its isotopes

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