Application of Solid Phase Microextraction and Gas Chromatography for the Determination of BTEX in Solid Petroleum Residues

Frena, Morgana; Tonietto, Alessandra Emanuele; Madureira, Luiz Augusto dos Santos

doi:10.5935/0103-5053.20130194

Cited by 7 publications

(6 citation statements)

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“…The results were as expected, with higher affinity of the more polar compounds for PA and the nonpolar ones for PDMS. [12][13][14][15][16][17][18] The fiber selection was based on the overall best performance (i.e., larger chromatographic peak areas). The selection of the PA fiber was consistent with the findings of Santos et al, 17 who conducted a study comparing PDMS and PA for the extraction of chlorobenzenes in soil using HS-SPME.…”

Section: Resultsmentioning

confidence: 99%

“…The problem is also observed after the leaching step using zero headspace extraction (ZHE), in which the final step of the process is the pressurization of the ZHE system to obtain the filtered liquid. 12 In view of this, it is important to develop new methods that can overcome these difficulties for the characterization of volatile organic compounds in the leaching extract of gluey waste materials. The solid-phase microextraction (SPME) technique coupled to gas chromatography (GC) has shown great potential to deal with this complex matrix problem.…”

Section: 2mentioning

confidence: 99%

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Evaluation of Benzene Derivatives Migration from Solid Residuals by Alternative Leaching Process Using HS‑SPME GC‑MS

Dognini

Madureira

2018

J. Braz. Chem. Soc.

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Solid residues generated by the petroleum industry are often classified as hazardous, in part due to the lack of adequate analytical methods for their characterization, given their gluey and highly viscous nature. In this study, an alternative to the method described by the United States Environmental Protection Agency (US EPA) method 1311, replacing the zero headspace extraction (ZHE) approach with solid-phase microextraction followed by analysis via gas chromatographymass spectrometry was developed, for the determination of aromatic chlorinated and nonchlorinated volatile organic compounds. The method was validated according to national and international regulations, with a working range of 2.00 to 90.00 μg L -1 and limit of detection varying from 0.12 to 0.41 μg L -1 . Spiked matrices were analyzed and recovery values ranged from 79.7 to 98.4%. The analysis of real samples revealed levels below limit of quantification for chlorobenzene derivatives (2.00 μg L -1 ) and for the non-chlorinated aromatic compounds < 19.85 μg L -1, proving to be a viable alternative to overcome the difficulties encountered with filtration techniques.

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Section: Resultsmentioning

confidence: 99%

Section: 2mentioning

confidence: 99%

Evaluation of Benzene Derivatives Migration from Solid Residuals by Alternative Leaching Process Using HS‑SPME GC‑MS

Dognini

Madureira

2018

J. Braz. Chem. Soc.

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“…Naturally, MAHs compounds are constituents of natural gas, crude petroleum, coal tar, and gaseous emissions from forest fires and volcanoes. Anthropogenic sources of MAH are spills from petroleum products, emissions from solid and liquid fossil combustion processes, consumer products such as thinners, cigarette smoke, adhesives, inks, cosmetics, and paints [4]. The introduction and accumulation of MAHs onto soil could alter the general soil ecosystem functions; contaminate the nearby surface and groundwater aquifer, the food chain through plant-animal uptake, and direct human exposures [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Occurrence and exposure risk of mono-aromatic hydrocarbons in selected petroleum product jetty impacted soils from the Niger Delta, Nigeria

Emoyan

2021

Egypt. J. Chem.

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This study evaluated the occurrence and human exposure risk of mono-aromatic hydrocarbons (MAHs) such as benzene, toluene, ethylbenzene, and o,p-xylene (BTEX) in soils from petroleum product jetty from the Niger Delta, Nigeria. Samples were collected from the top (0-15 cm), sub (15-30 cm), and bottom (30-45 cm) soil depths. The MAHs components were determined using Headspace gas chromatography-mass spectrometer (HS-GCMS). The individual and ƩMAHs concentrations ranged from not detected (ND) to 1528 µg kg -1 and ND to 2512 µg kg -1 respectively. The total cancer risks were within the low category. The source identification indicated that the origin MAHs species are attributed to solvent, paints, and gasoline-diesel spill and particulate emission from gasoline/diesel combustion exhaust in the vicinity of the petroleum product jetty. This depicts the presence of low molecular weight petroleum fractions such as gasoline and kerosene that could exhibit toxicological and carcinogenic effects to organisms in soils within the jetty. Clean-up actions should be carried out to prevent the accumulation of MAHs in soil-plant uptake and the potential ecological and human exposure risks of MAHs in the surrounding soil and aquatic ecosystem.

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“…[23][24][25] Gas chromatography (GC) has been used to determine petroleum compounds. 26 However, two-dimensional gas chromatography (GC×GC) has been used to better identify many kind of organic compounds. 27,28 In this work, we characterized and quantified the waxes present in crude oil samples using traditional methods, such as one-dimensional gas chromatography, and recently developed chromatographic methods, such as comprehensive two-dimensional gas chromatography, seeking to correlate the distribution of the wax chains with the pour point of the oil samples.…”

Section: Introductionmentioning

confidence: 99%

Wax Behavior in Crude Oils by Pour Point Analyses

Oliveira¹,

Nunes²,

Ribeiro³

et al. 2018

J. Braz. Chem. Soc.

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Crude oils containing large quantities of waxes, and in situations where sudden temperature drops occur, a crystalline network can be formed, generating flow difficulties in production, transfer and offloading lines. Despite the scientific and economic importance of this phenomenon, correlations between the behavior of petroleum in relation to its pour point are scarce in the literature. In this work, nine crude oil samples were characterized regarding density, water content, wax fraction (one-and two-dimensional chromatography), pour point, yield stress and wax appearance temperature. The results showed that the storage conditions and oil characteristics had a strong influence on the pour point. Yield stress was influenced by initial temperature of the sample, cooling rate and shear rate during cooling. Finally, the content of aromatic compounds in oil with low concentration of n-alkanes can contribute to increase the pour point.

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Application of Solid Phase Microextraction and Gas Chromatography for the Determination of BTEX in Solid Petroleum Residues

Cited by 7 publications

References 0 publications

Evaluation of Benzene Derivatives Migration from Solid Residuals by Alternative Leaching Process Using HS‑SPME GC‑MS

Evaluation of Benzene Derivatives Migration from Solid Residuals by Alternative Leaching Process Using HS‑SPME GC‑MS

Occurrence and exposure risk of mono-aromatic hydrocarbons in selected petroleum product jetty impacted soils from the Niger Delta, Nigeria

Wax Behavior in Crude Oils by Pour Point Analyses

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