Document


Title

Source profiles of particulate organic matters emitted from cereal straw burnings
Document Type: Journal
Author(s): Y. Zhang ; M. Shao ; Y. Zhang ; L. Zeng ; L. He ; B. Zhu ; Y. Wei ; X. Zhu
Publication Year: 2007

Cataloging Information

Keyword(s):
  • agriculture
  • air quality
  • Asia
  • biomass
  • biomass burning
  • biomass burning
  • carbon
  • cereal straw
  • chemical compounds
  • China
  • combustion
  • cropland fires
  • fire management
  • hydrocarbons
  • lignin
  • moisture
  • organic matter
  • particulate organic matter
  • particulates
  • pH
  • sampling
  • source profile
  • wood
Region(s):
  • International
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 48318
Tall Timbers Record Number: 24414
TTRS Location Status: In-file
TTRS Call Number: Fire File
TTRS Abstract Status: Okay, Fair use, 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

Cereal straw is one of the most abundant biomass burned in China but its contribution to fine particulates is not adequately understood. In this study, three main kinds of cereal straws were collected from five grain producing areas in China. Fine particulate matters (PM2.5) from the cereal straws subjected to control burnings, both under smoldering and flaming status, were sampled by using a custom made dilution chamber and sampling system in the laboratory. Element carbon (EC) and organic carbon (OC) was analyzed. 141 compounds of organic matters were measured by gas chromatography-mass spectrum (GC-MS). Source profiles of particulate organic matters emitted from cereal straw burnings were obtained. The results indicated that organic matters contribute a large fraction in fine particulate matters. Levoglucosan had the highest contributions with averagely 4.5% in mass of fine particulates and can be considered as the tracer of biomass burnings. Methyloxylated phenols from lignin degradation also had high concentrations in PM2.5, and contained approximately equal amounts of guaiacyl and syringyl compounds. b-Sitostrol also made up relatively a large fraction of PM2.5 compared with the other sterols (0.18%-0.63% of the total fine particle mass). Normal alkanes, PAHs, fatty acids, as well as normal alkanols had relatively lower concentrations compared with the compounds mentioned above. Carbon preference index (CPI) of normal alkanes and alkanoic acids showed characteristics of biogenic fuel burnings. Burning status significantly influenced the formations of EC and PAHs. The differences between the emission profiles of straw and wood combustions were displayed by the fingerprint compounds, which may be used to identify the contributions between wood and straw burnings in source apportionment researches.

Citation:
Zhang, Y., M. Shao, Y. Zhang, L. Zeng, L. He, B. Zhu, Y. Wei, and X. Zhu. 2007. Source profiles of particulate organic matters emitted from cereal straw burnings. Journal of Environmental Sciences China, v. 19, no. 2, p. 167-175.