Document


Title

Release of native and mass labelled PCDD/PCDF from soil heated to simulate bushfires
Document Type: Journal Article
Author(s): Robert R. Black; Carl P. Meyer; Alan Yates; Lukas Van Zwieten; Brock G. Chittim; Caroline Gaus; Jochen F. Mueller
Publication Year: 2012

Cataloging Information

Keyword(s):
  • air quality
  • Australia
  • bushfire
  • dioxins
  • emission factors
  • fire management
  • forest fire
  • New South Wales
  • pollution
  • soil management
  • soil nutrients
  • soil temperature
  • volatilization
  • wildfires
Region(s):
  • International
Record Maintained By:
Record Last Modified: February 5, 2019
FRAMES Record Number: 50484
Tall Timbers Record Number: 27093
TTRS Location Status: Not in file
TTRS Call Number: Not in File
TTRS Abstract Status: Fair use, Okay, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.

Description

Soil is an important reservoir of PCDD/PCDF, which can be released when environmental conditions change. Fire is an extreme event that can increase the surface temperatures of soil substantially, yet little is known of the role soil plays in the emission of PCDD/PCDF. Soil containing native PCDD/PCDF was fortified with a mixture of mass labelled PCDD/PCDF and heated between 150ºC and 400ºC. Both native and mass labelled PCDD/PCDF were released from the soil beyond 200ºC. Release of the mass labelled compounds was linearly related to temperature with up to 9% found in the air stream at 400ºC. The release of some native PCDD/PCDF was much greater. At 400ºC, emission of 1,2,3,7,8-Cl5DD was 300% compared to pre-experimental soil. Emission of PCDD/PCDF from soil during bushfires is a relevant process and may originate from both volatilization and formation via de novo or precursor pathways, or dechlorination. © 2012 Elsevier Ltd. All rights reserved.

Citation:
Black, R. R., C. P. Meyer, A. Yates, L. Van Zwieten, B. G. Chittim, C. Gaus, and J. F. Mueller. 2012. Release of native and mass labelled PCDD/PCDF from soil heated to simulate bushfires. Environmental Pollution, v. 166, p. 10-16. 10.1016/j.envpol.2012.02.014.