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Related Experiment Videos

Tetrachlorodibenzo-p-dioxin quantitation in stack-collected coal fly ash

B J Kimble, M L Gross

    Science (New York, N.Y.)
    |January 4, 1980
    PubMed
    Summary

    Gas chromatography-high resolution mass spectrometry analysis found no tetrachlorodibenzo-p-dioxin (TCDD) in coal-fired power plant fly ash. This suggests these plants are not significant sources of TCDD environmental contamination.

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    Area of Science:

    • Environmental Chemistry
    • Analytical Chemistry

    Background:

    • Tetrachlorodibenzo-p-dioxin (TCDD) is a persistent organic pollutant.
    • Concerns exist regarding TCDD emissions from fossil-fueled power plants.

    Purpose of the Study:

    • To quantitate TCDD levels in fly ash from a commercial coal-fired power plant.
    • To assess the contribution of such plants to environmental TCDD contamination.

    Main Methods:

    • Gas chromatography-high resolution mass spectrometry (GC-HRMS) was employed.
    • Analysis of fly ash samples collected from a typical commercial coal-fired power plant stack.

    Main Results:

    • No TCDD was detected in the analyzed fly ash samples.
    • The detection limit was 1.2 parts per trillion (by weight).
    • Minute traces below the detection limit cannot be ruled out.

    Conclusions:

    • Coal-fired power plants of this type are unlikely to be major sources of TCDD in environmental samples.
    • Findings contrast with previous industrial reports suggesting significant TCDD emissions.

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