Comparative study of extraction methods for the determination of PAHs from contaminated soils and sediments

Song, Yu; Jing, Xin; Fleischmann, S; Wilke, Berndt‐Michael

doi:10.1016/s0045-6535(02)00180-7

Cited by 175 publications

(102 citation statements)

References 15 publications

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“…Rock samples (Ϸ35 g) were crushed to a fine powder using a clean, glass pestle and mortar and extracted into toluene (150 cm 3 ) containing naphthalene-d1 (2.5-g surrogate standard) for 2 h using ultrasonic agitation (45). Extracts were concentrated via rotary evaporation at 50°C to Ϸ1 cm 3 , mixed with 1,3,5-tri-tert-butylbenzene (50 g⅐cm Ϫ3 , 50-L internal standard) and transferred to autosampler vials.…”

Section: Methodsmentioning

confidence: 99%

Geochemical evidence for combustion of hydrocarbons during the K-T impact event

Belcher¹,

Finch

Collinson³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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It has been proposed that extensive wildfires occurred after the Cretaceous-Tertiary (K-T) impact event. An abundance of soot and pyrosynthetic polycyclic aromatic hydrocarbons (pPAHs) in marine K-T boundary impact rocks (BIRs) have been considered support for this hypothesis. However, nonmarine K-T BIRs, from across North America, contain only rare occurrences of charcoal yet abundant noncharred plant remains. pPAHs and soot can be formed from a variety of sources, including partial combustion of vegetation and hydrocarbons whereby modern pPAH signatures are traceable to their source. We present results from multiple nonmarine K-T boundary sites from North America and reveal that the K-T BIRs have a pPAH signature consistent with the combustion of hydrocarbons and not living plant biomass, providing further evidence against K-T wildfires and compelling evidence that a significant volume of hydrocarbons was combusted during the K-T impact event.

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Section: Methodsmentioning

confidence: 99%

Geochemical evidence for combustion of hydrocarbons during the K-T impact event

Belcher¹,

Finch

Collinson³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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“…Recovery test for evaluation of extraction method efficiency were done according to methods of Song et al [35] and Kumari et al [36]. PAHs in the spiked sediments were extracted following the procedure had been used in search (recovery percentage b  a / c × 100), where, b is the amount of analyte found after the addition of standard solution, a is the amount of the analyte found before the addition of standard solution, and c is the amount of standard compound added}.…”

Section: B-extraction Of Pahsmentioning

confidence: 99%

Quality, Quantity and Origin of PAHs (Polycyclic Aromatic Hydrocarbons) in Lotic Ecosystem of Al-Hilla River, Iraq

Fikrat¹,

Hassan²,

Jasim

et al. 2014

JCEA

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Abstract:The Euphrates River is one of the major rivers in Iraq. When it reaches north of Hilla city, it will be divided in two branches. One of these braches flows toward Hilla city. On this branch, six locations were studied for the water quality of the Euphrates water. The present paper is aimed to fill the gap of information of the presence of PAHs (poly aromatic hydrocarbons) in water and sediment of Al-Hilla River, as well as to determine the quality and quantity of some PAHs. The depth of the river ranges from 2 m to 6 m. The quality, quantity and the origin of PAHs were studied in the water and sediment of Al-Hilla River. In addition, some physical and chemical properties were studied at six sites along the studied area, for the period March, 2010 to February, 2011. Sixteen PAHs that are listed by USEPA (US Environmental Protection Agency) as priority pollutants (Nap (naphthalene), Acpy ,h)anthracene), B(ghi)P (benzo(ghi)perylene) and Ind (indeno (1,2,3-cd) pyrene)) were detected in Al-Hilla river. High concentrations of PAHs were detected in the sediment relative to that within the water. The present study revealed that the origin of PAHs in water and sediment might be the pyrogenic origin.

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“…The results obtained for the material reference were comparable to results which have been published using Soxhlet extraction for determining HA and PAH in river sediment. 26,27 In addition, it was used a certified reference material to validate the method. The test was performed only for PAH, because there is no certified reference material for AH.…”

Section: Parameters Of Meritmentioning

confidence: 99%

Optimization of an analytical protocol for the extraction, fractionation and determination of aromatic and aliphatic hydrocarbons in sediments

Ferreira¹,

Gouveia²,

Silva³

et al. 2012

J. Braz. Chem. Soc.

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Neste trabalho foram aperfeiçoadas as etapas para determinação de hidrocarbonetos alifáticos e aromáticos em sedimentos. Durante as etapas de extração e concentração foram avaliados fatores determinantes como tempo, solvente extrator e sistema de resfriamento. Quanto ao cleanup, foram estudados diferentes volumes e misturas de solventes de eluição. Os resultados obtidos foram considerados aceitáveis (70-120%). A linearidade, limites de detecção e quantificação foram estudados construindo-se curvas analíticas (R > 0,99) com valores que demonstraram grande sensibilidade do método. A precisão e exatidão foram avaliadas com ensaios envolvendo material de referência certificado e adição e recuperação de analitos em sulfato de sódio. Nos testes de adição e recuperação os desvios ficaram abaixo de 20%, com recuperação dos alifáticos e aromáticos de 59-105% e 55-113%, respectivamente. Para os sedimentos de referência, os desvios obtidos foram inferiores aos valores certificados, com recuperações satisfatórias. O presente trabalho proporcionou a melhoria de um método já consolidado, possibilitando obter resultados com elevada confiabilidade analítica.The main steps involved in the determination of aliphatic and aromatic hydrocarbons in sediments were evaluated in this work. In the extraction, factors such as the cooling system, time and solvent were evaluated. During the extraction and concentration, steps aspects such as time, extraction solvent and cooling system were evaluated. In the cleanup different solvents and elution mixtures were studied. The results were considered satisfactory (70-120%). Linearity and limits of detection and quantification were studied by means of calibration curves (R > 0.90) and the results demonstrated high sensitivity of the method. Precision and accuracy were studied by recovery tests using a certified reference material and sodium sulfate. In recovery tests, the standard deviations were below 20%, with percent recoveries for aliphatic and aromatics ranging from 59 to 105% and 55 to 113%, respectively. For the reference sediment, the standard deviations were lower than the certified values, with satisfactory recovery values. The present work provided a way of improving an already established method with high analytical reliability.

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Comparative study of extraction methods for the determination of PAHs from contaminated soils and sediments

Cited by 175 publications

References 15 publications

Geochemical evidence for combustion of hydrocarbons during the K-T impact event

Geochemical evidence for combustion of hydrocarbons during the K-T impact event

Quality, Quantity and Origin of PAHs (Polycyclic Aromatic Hydrocarbons) in Lotic Ecosystem of Al-Hilla River, Iraq

Optimization of an analytical protocol for the extraction, fractionation and determination of aromatic and aliphatic hydrocarbons in sediments

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