Solid phase extraction and capillary GC-ECD analysis of polychlorinated dibenzo-p-dioxins in chlorinated phenols / A. Grochowalski, Sławomir Wybraniec, L. Górski, M. Sokołowski // Chemia Analityczna ... więcej

Solid phase extraction and capillary GC-ECD analysis of polychlorinated dibenzo-p-dioxins in chlorinated phenols / A. Grochowalski, Sławomir Wybraniec, L. Górski, M. Sokołowski // Chemia Analityczna [Dokument elektroniczny]. – 1993, Vol. 38, No. 3, s. 279-286 : tab., wykr. – Tryb dostępu: http://beta.chem.uw.edu.pl/chemanal/PDFs/1993/CHAN1993V0038P00279.pdf. – Bibliogr. 7 poz., Streszcz. ang., pol. – ISSN 0009-2223

Studies werecarrted out to establish whether the solid phase extraction{s.p.e'.)rwas a suitable technique for; preconcentrationand isolation of polychlorinated dioxins (PCDDs) and polychlorinated dibenzofurans ... więcej

Studies werecarrted out to establish whether the solid phase extraction{s.p.e'.)rwas a suitable technique for; preconcentrationand isolation of polychlorinated dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) from chlorophenol samples. Because of the low concentration of.these compounds in the investigated polychlorophenol samples, methods fer selective enrichment and sensitive detection are desirable. Preconcentration of PCDDs fro~ chle{()phenate alkaline water solution by a factor of 20 was achieved in one step on tl1reedifferents.p.e,-0DS, s.p.e.-phenyl and s.p.e,-octyl phases. The best teceveryefPCDDs was found for andODS phase, where chlorophenate water solution was adjusted tepH = 12. It was shewn that average PCDDs recoveries , obtained using s.p.e, technique for s.p.e.-ODS and s.p.e.-phenyl phases were similar to the ones obtained by liquid/liquid extraction but the time needed for isolation of PCDDs isomers from chlorophenol samples was reduced by factor of four.