Premium
Application of water as a solvent in microwave‐assisted extraction for analysis of PCBs and CBzs in fly ash
Author(s) -
Sun Yifei,
Takaoka Masaki,
Takeda Nobuo,
Matsumoto Tadao,
Oshita Kazuyuki
Publication year - 2005
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200401860
Subject(s) - extraction (chemistry) , solvent , chlorobenzene , fly ash , chemistry , environmental chemistry , environmentally friendly , water extraction , chromatography , pulp and paper industry , waste management , organic chemistry , ecology , engineering , biology , catalysis
Abstract 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.