An Organic Solvent-Free Microwave-Assisted Extraction of Some Priority Pollutants of Phenols in Lake Sediments

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  • WANG Linling
    Environmental Science Research Institute, Huazhong University of Science and Technology
  • HUANG Weihong
    Environmental Science Research Institute, Huazhong University of Science and Technology
  • SHAO Xiumei
    Environmental Science Research Institute, Huazhong University of Science and Technology
  • LU Xiaohua
    Environmental Science Research Institute, Huazhong University of Science and Technology

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  • Organic Solvent Free Microwave Assisted Extraction of Some Priority Pollutants of Phenols in Lake Sediments

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Abstract

Alkaline water was used for the microwave-assisted extraction of some priority pollutants of phenols in sediments, i.e. phenol (Ph), 2-chlorophenol (2CP), 2,4-dichlorophenol (2,4DCP), 4-chlorophenol (4CP), 4-dinitrophenol (4NP) and pentachlorophenol (PCP). This organic solvent-free extraction procedure was optimized by studying the parameters such as pH, volume of the alkaline water, extraction pressure and time. Under the optimized conditions, the recoveries of phenols were in the range of 80% to 110%. The extracts were then cleaned-up and concentrated by microcolumn solid phase extraction (SPE) and determined by gas chromatography-flame ionization detection system. The relative standard deviation of the overall-method for most phenol determinations was about 5.0% (n = 6). The proposed method, which needs little volume (1 mL) of ethanol for SPE, has been applied to determine these phenols in sediment samples, and the analytical results are in good agreement with those achieved by Soxhlet extraction.

Journal

  • Analytical Sciences

    Analytical Sciences 19 (11), 1487-1490, 2003

    The Japan Society for Analytical Chemistry

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