US EPA

2180187 

Journal Article 

Some aspects of the recovery of chlorinated residues (DDT-type compounds and PCB) from fish tissue by using different extraction methods 

Hattula, ML 

1974 

Yes 

Bulletin of Environmental Contamination and Toxicology
ISSN: 0007-4861
EISSN: 1432-0800 

12 

3 

301-307 

English 

4215518 

WOS:A1974U188400007 

https://search.proquest.com/docview/82571605?accountid=171501
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In this study four solvent systems were studied and used as cold extraction in glass columns and as hot extraction in Soxhlet apparatus. The four systems included: diethyl ether; diethyl ether and n-pentane 1:1 (v/v); 25% n-hexane in acetone and 10% diethyl ether in petroleum ether 1:1 (v/v); and methanol and chloroform 1:1 (v/v). The fish studied were pike, perch, and bream from the northern part of the Baltic Sea and represented lean, medium fatty, and fatty fish, respectively. It wwas determined that the factors affecting the final results are mainly the extraction process, clean-up, and the determination by gas liquid chromatography. The results clearly showed that cold extraction is not comparable with hot extraction, at least when the residue concentration ov material is low. Great variation was noted in the fat extraction process enen when homogeneous material is extracted. Thus, it is essential that the extraction method be tested for different materials and when the results are given, the limits of error which are stastically tested should be included. 

Lipids; Pesticide Residues; Solvents; Dichlorodiphenyl Dichloroethylene; 4M7FS82U08; CIW5S16655; Polychlorinated Biphenyls; DFC2HB4I0K; Index Medicus; Animals; Analysis of Variance; Lipids -- isolation & purification; Chromatography, Gas; Dichlorodiphenyl Dichloroethylene -- analysis; Methods; Polychlorinated Biphenyls -- analysis; Pesticide Residues -- analysis; DDT -- analysis; Fishes -- metabolism