Soxhlet extraction parameters’ influence on the recovery of polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/F) from a sediment, and artifact formation of PCDD

Autor:	Lars-Owe Kjeller, Christoffer Rappe
Rok vydání:	1998
Předmět:	Chromatography Health Toxicology and Mutagenesis Extraction (chemistry) Pollution Toluene Pentachlorophenol Solvent chemistry.chemical_compound chemistry Environmental chemistry Acetone Environmental Chemistry Methanol Sodium carbonate Dichloromethane
Zdroj:	Toxicological & Environmental Chemistry. 67:481-490
ISSN:	1029-0486 0277-2248
DOI:	10.1080/02772249809358638
Popis:	Soxhlet extraction of polychlorinated dibenzo‐p‐dioxins/dibenzofurans (PCDD/F) from sediment was studied using a designed experimental set‐up. Three variables were studied: three solvent combinations n‐hexane/methanol, dichloromethane/acetone and toluene/methanol; two extraction times, 8 and 16 h, and addition of bulk substances (sodium carbonate). The extraction efficiency was almost identical in all extractions, with the exception of extraction where toluene/ methanol was combined with sodium carbonate. In these samples a major effect was observed, due to formation of Hx‐, Hp‐ and OCDD isomers. Composition of formed PCDD was similar to PCDD isomers found in pentachlorophenol products.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::61920e84d063dd9a2cfb3be5faf9ee76 https://doi.org/10.1080/02772249809358638 Zobrazit plný text záznamu