Experimental Design Approach for the Extraction of Polycyclic Aromatic Hydrocarbons from Soil Using Supercritical Carbon Dioxide

Barnabas, Ian J.; Dean, John R.; Tomlinson, W. R.; Owen, Susan P.

doi:10.1021/ac00109a027

Cited by 71 publications

(26 citation statements)

References 14 publications

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“…Nevertheless, it seems clear the beneficial effect of extraction time and likely the existence of an optimum in the working temperature. Barnabas et al [7] in a work similar to this one claimed a negligible role played by temperature and pressure, being the only significant variables the extraction time and modifier (methanol) concentration.…”

Section: Tablementioning

confidence: 78%

Supercritical CO2 extraction of PAHs on spiked soil

Rivas¹,

Gimeno²,

Mantell³

et al. 2009

Journal of Hazardous Materials

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Section: Tablementioning

confidence: 78%

Supercritical CO2 extraction of PAHs on spiked soil

Rivas¹,

Gimeno²,

Mantell³

et al. 2009

Journal of Hazardous Materials

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“…Barnabas et al [73] have analyzed the extraction of 16 polycyclic aromatic hydrocarbons using supercritical CO 2 . An experimental design approach, based on a central composite design, was exploited to determine which supercritical extraction operating variables affect the total recovery of polycyclic aromatic hydrocarbons.…”

Section: Hazardous Substances Extraction From Soil and Sedimentmentioning

confidence: 99%

Decontamination of hazardous substances from solid matrices and liquids using supercritical fluids extraction: A review

Sunarso

Ismadji

2009

Journal of Hazardous Materials

133

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“…According to Barnabas et al [14], PAH recovery depends only on the extraction time and the amount of modifier. Monesrrate [15] found that the solvation power enhancement of CO 2 /methanol mixture increases the recovery greatly and enables to decrease the extraction time.…”

Section: Introductionmentioning

confidence: 99%

A two‐step supercritical fluid extraction of polycyclic aromatic hydrocarbons from roadside soil samples

Lojková

Sedláková

Kubáň³

2005

J of Separation Science

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A two-step procedure for the supercritical fluid extraction (SFE) of polycyclic aromatic hydrocarbons from soil samples was developed. The procedure consists of a static supercritical fluid treatment in a closed extraction cell at a high temperature (T=250 or 340degreesC for 20 min) and an SFE with a solvent trapping. During the static phase, the sample is exposed to a supercritical organic solvent (methanol, toluene, dichloromethane, ACN, acetone, and hexane). The solvent penetrates particles of the matrix to substitute strongly bonded molecules and dissolves the analytes in the supercritical phase. At ambient temperature, supercritical fluids became liquid and lost their solvation abilities. Most of the analytes condense on the surface of the particles or on the extraction cell walls without forming strong bonds or penetrating deep into the matrix. Thus, the pretreatment liberates the analytes and they behave similar to those in freshly spiked samples. The common SFE with toluene-modified CO2 as an extraction fluid follows the static phase. With the use of the most suitable extraction phases (toluene, ACN), the extraction efficiency of the combined procedure is much higher (approximately100%). The results of the combined procedure are compared to the SFE procedure of the same untreated sample (difference less than 5%) and to the Soxhlet extraction. The extracts were analyzed using a GC with the flame ionization detection.

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Experimental Design Approach for the Extraction of Polycyclic Aromatic Hydrocarbons from Soil Using Supercritical Carbon Dioxide

Cited by 71 publications

References 14 publications

Supercritical CO2 extraction of PAHs on spiked soil

Supercritical CO2 extraction of PAHs on spiked soil

Decontamination of hazardous substances from solid matrices and liquids using supercritical fluids extraction: A review

A two‐step supercritical fluid extraction of polycyclic aromatic hydrocarbons from roadside soil samples

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