Document Detail


Application of water as a solvent in microwave-assisted extraction for analysis of PCBs and CBzs in fly ash.
MedLine Citation:
PMID:  15881090     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Polychlorinated biphenyls (PCBs) and chlorobenzenes (CBzs) are two classes of dioxin precursors formed in municipal solid waste incinerators (MSWIs); they produce negative health effects similar to those of dioxins. Reducing the analytical time required for determining the concentrations of these compounds in MSWIs is important for quickly evaluating their importance and assessing associated health risks. In the present study, water is used as a safe and environmentally friendly solvent in microwave-assisted extraction (MAE) for PCB and CBz analyses. MAE is compared with traditional Soxhlet extraction (SE) to determine the extraction efficiencies. The evaluation of extraction efficiencies shows that MAE has a high extraction efficiency compared with that of SE when water content is lower than 60%. Furthermore, the extraction time and organic solvent consumption are reduced with MAE compared with SE.
Authors:
Yifei Sun; Masaki Takaoka; Nobuo Takeda; Tadao Matsumoto; Kazuyuki Oshita
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of separation science     Volume:  28     ISSN:  1615-9306     ISO Abbreviation:  J Sep Sci     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-05-09     Completed Date:  2005-09-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  101088554     Medline TA:  J Sep Sci     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  585-8     Citation Subset:  IM    
Affiliation:
Department of Urban & Environmental Engineering, Graduate School of Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan.
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MeSH Terms
Descriptor/Qualifier:
Carbon / chemistry*
Chlorobenzenes / analysis*
Incineration
Industrial Waste
Microwaves*
Particulate Matter
Polychlorinated Biphenyls / analysis*
Solvents / chemistry*
Water / chemistry*
Chemical
Reg. No./Substance:
0/Chlorobenzenes; 0/Industrial Waste; 0/Particulate Matter; 0/Polychlorinated Biphenyls; 0/Solvents; 68131-74-8/fly ash; 7440-44-0/Carbon; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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