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Titre du document / Document title

Robustness of supercritical fluid extraction (SFE) in environmental studies : analysis of chlorinated pollutants in tissues from the osprey (Pandion haliaetus) and several fish species

Auteur(s) / Author(s)

HALE R. C. (1) ; GAYLOR M. O. (1) ; THAMES J. F. (1) ; SMITH C. L. (1) ; MOTHERSHEAD R. F. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Environmental Science, School of Marine Science, Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, VA 23062, ETATS-UNIS

Résumé / Abstract

Most commonly used methods for the extraction and subsequent determination of chlorinated pollutants in biotic tissues are time-consuming and require large volumes of hazardous organic solvents. Supercritical fluid extraction (SFE) has recently emerged as a potentially rapid, selective and environmentally-safe alternative. However, its robustness has not been widely evaluated for biological matrices. A SFE-based approach, using CO, and solid-phase trapping, was successfully applied to the analysis of 644 fish fillets for chlorinated pesticides and PCBs. Resulting extracts required no pre-GC purification steps. Eight mesentery samples, obtained from osprey (Pandion haliaetus) carcasses associated with a mass mortality event in southeast Virginia, were also examined. Bird extracts required simple Florisil column purification prior to GC. Mean total PCB concentrations were much higher in osprey than in fish, 30,400 (SD 12,700) and 414 (SD 911) ug/kg, respectively. Dominant PCBs in the osprey possessed higher degrees of chlorination than those in the fish. Comparison of chromatographic patterns suggested preferential reductions in the concentrations of specific PCBs in the birds. 4.4-DDE was the major pesticide in both birds and fish. Mean concentrations were 8500 (SD 2380) and 81.2 (SD 127) ug/kg, respectively.

Revue / Journal Title

International journal of environmental analytical chemistry    ISSN  0306-7319   CODEN IJEAA3 

Source / Source

1996, vol. 64, no1, pp. 11-19 (18 ref.)

Langue / Language

Anglais

Editeur / Publisher

Gordon and Breach Science, Amsterdam, PAYS-BAS  (1971) (Revue)

Mots-clés anglais / English Keywords

Chemical analysis

;

Quantitative analysis

;

Chlorine Organic compounds

;

Pesticides

;

Polychlorobiphenyl

;

Pollutant

;

Pandion haliaetus

;

Pisces

;

Supercritical fluid extraction

;

Aves

;

Vertebrata

;

Mots-clés français / French Keywords

Analyse chimique

;

Analyse quantitative

;

Chlore Composé organique

;

Pesticide

;

Biphényle(polychloro)

;

Polluant

;

Pandion haliaetus

;

Pisces

;

Extraction SFE

;

Aves

;

Vertebrata

;

Mots-clés espagnols / Spanish Keywords

Análisis químico

;

Análisis cuantitativo

;

Cloro Compuesto orgánico

;

Plaguicida

;

Bifenilo(policloro)

;

Contaminante

;

Pandion haliaetus

;

Pisces

;

Aves

;

Vertebrata

;

Localisation / Location

INIST-CNRS, Cote INIST : 15596, 35400006420732.0020

Nº notice refdoc (ud4) : 3197951



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