Effects of analyte-matrix interactions on supercritical fluid extraction efficiencies of polycyclic aromatic hydrocarbons

The effects of different variables for analyte-matrix interactions on supercritical fluid extraction (SFE) efficiencies of polycyclic aromatic hydrocarbons (PAHs) were investigated. The results indicated that the main factors for describing a matrix, e.g., the chemical properties of the matrix surfa...

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Bibliographic Details
Published in:Analytica chimica acta 1997-04, Vol.342 (1), p.41-50
Main Authors: Hsieh, You-Zung, Chang, An-Chi
Format: Article
Language:English
Subjects:
Analyte-matrix interactions
PAHs
Supercritical fluid extraction
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Summary:The effects of different variables for analyte-matrix interactions on supercritical fluid extraction (SFE) efficiencies of polycyclic aromatic hydrocarbons (PAHs) were investigated. The results indicated that the main factors for describing a matrix, e.g., the chemical properties of the matrix surface, surface area, and pore size, could significantly influence the analyte-matrix interactions. The polarizability of an analyte was demonstrated to be yet another significant factor for influencing analyte-matrix interactions. Either elevating the temperature or adding modifiers could also increase the SFE recoveries. The underlying mechanisms of these variables are discussed.
ISSN:0003-2670
1873-4324
DOI:10.1016/S0003-2670(96)00564-8