The determination of trace elements in crude oil and its heavy fractions by atomic spectrometry

Duyck, Christiane; Miekeley, Norbert; Silveira, Carmem Lúcia P. da; Aucélio, Ricardo Q.; Campos, Reinaldo Calixto de; Grinberg, Patrícia; Brandão, Geisamanda Pedrini

doi:10.1016/j.sab.2007.04.013

Cited by 165 publications

(103 citation statements)

References 113 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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.

Self Cite

View full text Add to dashboard Cite

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.

show abstract

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.

Self Cite

View full text Add to dashboard Cite

show abstract

“…8,12,13 However, the low sensitivity makes it unsuitable for lead quantification at trace levels in different samples. 14 To overcome this limitation, preconcentration procedures before quantification are usually required. 15 Preconcentration methods based on online solid phase extraction (SPE) are very useful due to their simplicity, high enrichment factor, reduced reagent consumption, accuracy, high analytical frequency and easy regeneration of the solid phase adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Chelating Agent Free-Solid Phase Extractor (CAF-SPE) Based on New SiO2/Al2O3/SnO2 Ternary Oxide and Application for Online Preconcentration of Pb2+ Coupled with FAAS

Tarley¹,

Scheel²,

Ribeiro³

et al. 2017

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

A new online solid phase preconcentration method using the new SiO 2 /Al 2 O 3 /SnO 2 ternary oxide (designated as SiAlSn) as chelating agent free-solid phase extractor (CAF-SPE) coupled to flame atomic absorption spectrometry (FAAS) for Pb 2+ determination at trace levels in different kind of samples is proposed. The solid adsorbent has been characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron miscroscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray fluorescence spectroscopy (XRF) and textural data. The method involves the preconcentration using time-based sampling of Pb 2+ solution at pH 4.3 through 100.0 mg of packed adsorbed into a mini-column under flow rate of 4.0 mL min -1 during 5 min. The elution step was accomplished by using 1.0 mol L -1 HCl. A wide range of analytical curve (5.0-400.0 µg L -1 ), high enrichment factor (40.5), low consumption index (0.5 mL) and low limits of quantification and detection, 5.0 and 1.5 µg L -1 , respectively, were obtained with the developed method. Practical application of method was tested on water samples, chocolate powder, Ginkgo biloba and sediment (certified reference material). On the basis of the results, the SiAlSn can be considered an effective adsorbent belonging to the class of CAF-SPE for Pb 2+ determination from different matrices.Keywords: lead, online solid phase extraction, SiO 2 /Al 2 O 3 /SnO 2 , flame atomic absorption spectrometry, food and water samples IntroductionLead contamination has been considered one of the most environmental concern worldwide due to numerous acute and chronic adverse effects caused by the element. 1,2 To the population in general, which is not occupationally exposed, water and food are significant sources of exposure to lead. 2 The most common lead contamination pathways to water are the household plumbing corrosion and anthropic pollution, while to food are the development of plants grown in soil containing high amount of lead and the accidental additive picked up during food processing. [3][4][5][6] Due to its high degree of toxicity and the effects caused to the ecosystem, a rigid monitoring of the activities involving this metal is required.According to World Health Organization (WHO), 6-8 the health-based guideline established value for lead in drinking water is 10.0 µg L -1 , while for food, the seventy-third report of the Joint Food Agriculture Organization/WHO Expert Committee on Food Additives estimated the mean dietary Synthesis of Chelating Agent Free-Solid Phase Extractor (CAF-SPE) Based on New SiO 2 /Al 2 O 3 /SnO 2 Ternary Oxide J. Braz. Chem. Soc. 1226 exposure per day and body weight for children (aged about 1-4 years) and to adults being in the range 0.03-9.00 and 0.02-3.00 µg kg -1 , respectively. The Brazilian Ministry of Health 9 and CONAMA resolution No. 357 (Brazil National Environment Council) 10 established the maximum allowable lead content in freshwater as 30.0 µg L -1 , while for drinking water this index reduces to 10.0 µg L -1 and effluents release...

show abstract

“…They are often present in small amounts in mgg -1 or ngg -1 range yet pose great concern to the petroleum industry and to the environment due to their ability to accelerate corrosion of distillation towers and turbines, poison catalysts by pore clogging, fissure and deform reactors, pollute the environment, upset natural environmental balances, contaminate food, etc. [4,5]. Demetallization, which has to do with the removal of these metal ions, is therefore a statutory process to enhance efficiency in the oil industry.…”

Section: Introductionmentioning

confidence: 99%

“…Demetallization, which has to do with the removal of these metal ions, is therefore a statutory process to enhance efficiency in the oil industry. Among the heavy metals found in crude, nickel determination after demetallization is crucial being constituent of catalysts used in refining processes [4]. Some of the techniques employed for demetallization include coking and hydro treatment [6], microwave-chemical method [7] and most recently, the use of metal oxide nanoparticles, Starch Stabilized Magnetic Nanoparticles (SSMNPs) for the removal of nickel from crude oil monitored by UV-Vis spectrophotometry [5].…”

Section: Introductionmentioning

confidence: 99%

Demetallization of Nickel from Crude Oil using Aluminum Oxide (Al2O3) Nanoparticles Synthesized with Sodium Dodecyl Sulfate (SDS)

Konne¹,

Ud²,

Ag³

2017

J Material Sci Eng

View full text Add to dashboard Cite

Aluminum oxide nanoparticles (Al 2 O 3 +SDS and Al 2 O 3 ) were synthesized by a simple sol-gel method for demetallization of nickel from crude oil-water mixture in a batch adsorption process for the first time. The samples were dried, calcined at 550°C, cooled and characterized using scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD) techniques. The XRD confirmed that Al 2 O 3 phase were synthesized with more minor impurities of bauxite and silica in Al 2 O 3 without SDS. Particle size estimations were 197 and 183 nm for the Al 2 O 3 with and without SDS, respectively. SEM showed larger rectangular porous crystallites and thinner netlike-vertical platy crystallites for the former and later samples respectively while the EDS confirmed the presence of Al and O in them. The batch adsorption showed that the %Removal (%R) of the adsorption process increase gradually with increase in adsorbent from 0.02 to 0.1 g to a maximum at 86.1% for Al 2 O 3 +SDS but decrease with increase in the adsorbent dosage for Al 2 O 3 with %R maximum of 78% at the least (0.02 g) dosage. On the other hand, at constant adsorbent dosage, %R of 94 and 93% for a 1:3 crude oil-water mixture were obtained for

show abstract

The determination of trace elements in crude oil and its heavy fractions by atomic spectrometry

Cited by 165 publications

References 113 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

Synthesis of Chelating Agent Free-Solid Phase Extractor (CAF-SPE) Based on New SiO2/Al2O3/SnO2 Ternary Oxide and Application for Online Preconcentration of Pb2+ Coupled with FAAS

Demetallization of Nickel from Crude Oil using Aluminum Oxide (Al2O3) Nanoparticles Synthesized with Sodium Dodecyl Sulfate (SDS)

Contact Info

Product

Resources

About