Application of water as a solvent in microwave-assisted extraction for analysis of PCBs and CBzs in fly ash

被引：23

作者：

Sun, YF ^{[1
]}

Takaoka, M ^{[1
]}

Takeda, N ^{[1
]}

Matsumoto, T ^{[1
]}

Oshita, K ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Urban & Environm Engn, Sakyo Ku, Kyoto 6068501, Japan

来源：

JOURNAL OF SEPARATION SCIENCE | 2005年 / 28卷 / 06期

关键词：

polychlorinated biphenyls (PCBs); chlorobenzenes (CBzs); soxhlet extraction (SE); microwave-assisted extraction (MAE); water content (WC);

D O I：

10.1002/jssc.200401860

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页码：585 / 588

页数：4

共 15 条

[11] Supercritical fluids in separation science - the dreams, the reality and the future [J].

Smith, RM .

JOURNAL OF CHROMATOGRAPHY A, 1999, 856 (1-2) :83-115

[12] Chlamydia trachomatis infection in women with and without cervical intraepithelial neoplasia [J].

Takac, I ;

Gorisek, B .

INTERNATIONAL JOURNAL OF STD & AIDS, 1999, 10 (05) :331-333

[13] SYSTEMATIC STUDY OF THE INFLUENCE OF MODIFIERS ON THE CO2-SUPERCRITICAL EXTRACTION OF PAHS IN SOIL [J].

TENA, MT ;

DECASTRO, MDL ;

VALCARCEL, M .

CHROMATOGRAPHIA, 1994, 38 (7-8) :431-435

[14]

THOMAS H, 1998, J CHROMATOGR A, V811, P117

[15] Comparison of accelerated solvent extraction with microwave-assisted extraction and Soxhlet for the extraction of chlorinated biphenyls in soil samples [J].

Zuloaga, O ;

Etxebarria, N ;

Fernandez, LA ;

Madariaga, JM .

TRAC-TRENDS IN ANALYTICAL CHEMISTRY, 1998, 17 (10) :642-647

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