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Global hexachlorobenzene emissions.

R E Bailey1

  • 1Bailey Associates, Midland, MI 48642, USA.

Chemosphere
|April 12, 2001
PubMed
Summary
This summary is machine-generated.

Global hexachlorobenzene (HCB) emissions in the mid-1990s were approximately 23,000 kg/yr, with no single dominant source identified. Pesticide application, manufacturing, and combustion were significant contributors to HCB pollution.

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Area of Science:

  • Environmental Chemistry
  • Pollution Control

Background:

  • Hexachlorobenzene (HCB) is a persistent organic pollutant with global environmental implications.
  • Understanding HCB emission sources is crucial for developing effective mitigation strategies.

Purpose of the Study:

  • To provide a global overview of hexachlorobenzene (HCB) emissions in the mid-1990s.
  • To identify and quantify major HCB emission sources worldwide.

Main Methods:

  • Compilation of information from diverse sources to create a global emission inventory.
  • Estimation of HCB emissions from key categories: pesticide application, manufacturing, and combustion.

Main Results:

  • Total estimated global HCB emissions were approximately 23,000 kg/yr (range: 12,000-92,000 kg/yr).

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  • Key emission sources included pesticide application (6500 kg/yr), manufacturing (9500 kg/yr), and combustion (7000 kg/yr).
  • A significant portion of atmospheric HCB may originate from volatilization of historical soil contamination.

    • Conclusions:

    • No single source dominated global hexachlorobenzene emissions in the mid-1990s.
    • Multiple industrial and agricultural activities contribute to HCB pollution.
    • Further research is needed on HCB sources in developing countries and the contribution of historical contamination.