Supercritical fluid extraction of polycyclic aromatic hydrocarbons from marine sediments and soil samples

Librando, Vito; Hutzinger, O.; Tringali, Giuseppe; Aresta, Michele

doi:10.1016/j.chemosphere.2003.07.008

Cited by 77 publications

(40 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[8][9][10] Other approaches have also been applied, such as accelerated solvent extraction (ASE), 11,12 supercritical fluid extraction (SFE) 13,14 and microwaveassisted extraction (MAE). [15][16][17] Each technique has its advantages and disadvantages and the suitability depends on several factors, such as capital and operational costs, facility use, and availability of materials and equipment in the laboratory.…”

Section: Introductionmentioning

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.

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

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.

View full text Add to dashboard Cite

show abstract

“…Furthermore, the proposed method is cheaper and easier than other extraction techniques reported in the literature, such as super critical fluid extraction [3], microwave assisted extraction [6] and matrix solid phase dispersion [27,28], etc.…”

Section: Comparison Of the Miniaturized Ultrasonic Extraction With Otmentioning

confidence: 98%

“…However, this procedure requires long extraction times and large volumes of organic solvents. Therefore, in order to reduce the extraction time, amount of solvent required, as well as sample amount, new extraction procedures, i. e., supercritical fluid extraction (SFE) [3], ultrasonic extraction [4,5], microwave assisted extraction (MAE) [6], and pressurized liquid extraction (PLE) [4,7] etc., have been developed as alternative techniques.…”

Section: Introductionmentioning

confidence: 99%

Determination of Polycyclic Aromatic Hydrocarbons in Soil by Miniaturized Ultrasonic Extraction and Gas Chromatography‐Mass Selective Detection

Özcan¹,

Tor

Aydın

2009

CLEAN Soil Air Water

View full text Add to dashboard Cite

A miniaturized ultrasonic extraction procedure was developed for the determination of polycyclic aromatic hydrocarbons (PAHs) in soil by gas chromatography-mass spectrometry. After determination of the most suitable extraction solvent with 5 min sonication time, several other parameters (sample amount, solvent volume and number of extraction times) were optimized using a 2 3 factorial experimental design. Recoveries of PAHs from spiked soil samples were over 90% for three different fortification levels between 50 and 300 lg/kg, and relative standard deviations of the recoveries were in the range of a 1 -15%. The limits of detection ranged from 0.002 to 1.87 lg/kg. The performance of the developed procedure was also compared with other traditional Soxhlet, shake flask and large scale ultrasonic extraction procedures on real soil samples, and extraction methods showed comparable efficiencies. The proposed procedure required small volumes of solvent and sample. It was practicable, rapid and easy to use for analysis of PAHs in soils.

show abstract

“…In recent years, attempts have been made to develop new extraction techniques in order to decrease the consumption of time and organic solvents, improving the precision of analytes recoveries and reducing extraction time. These techniques include microwave-assisted extraction (MAE) [20], supercritical fluid extraction (SFE) [21], ultrasonic-assisted extraction (UAE) [22,23] and accelerated solvent extraction (ASE) [24].…”

Section: Fei Yangmentioning

confidence: 99%

Ultrasonication extraction coupled with magnetic solid‐phase clean‐up for the determination of polycyclic aromatic hydrocarbons in soils by high‐performance liquid chromatography

Yang

Long

Shen

et al. 2011

J of Separation Science

View full text Add to dashboard Cite

C18-functionalized magnetic microspheres synthesized in a three-stage system and characterized by Fourier transform infrared (FTIR) spectroscopy and SEM were applied for clean-up and enrichment of polycyclic aromatic hydrocarbons (PAHs) in soil samples combined with ultrasonication extraction. Magnetic solid-phase extraction (MSPE) parameters, such as elution solvents, amounts of sorbents, enrichment time and organic modifier, were optimized together with ultrasonication time and extraction solvents. Under the optimal conditions, the developed method provided spiked recoveries of 63.2-92.8% with RSDs of less than 6.4% and limits of detection were 0.5-1.0 ng/g. This new method provides several advantages, such as high extraction efficiency, convenient extraction procedure and short analysis times. Finally, the method was successfully applied to the determination of polycyclic aromatic hydrocarbons in soil samples.

show abstract

Supercritical fluid extraction of polycyclic aromatic hydrocarbons from marine sediments and soil samples

Cited by 77 publications

References 22 publications

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

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

Determination of Polycyclic Aromatic Hydrocarbons in Soil by Miniaturized Ultrasonic Extraction and Gas Chromatography‐Mass Selective Detection

Ultrasonication extraction coupled with magnetic solid‐phase clean‐up for the determination of polycyclic aromatic hydrocarbons in soils by high‐performance liquid chromatography

Contact Info

Product

Resources

About