期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 573, 期 -, 页码 1397-1405出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2016.07.113
关键词
Dioxins/furans; Forest fire; Coastal water column; Central Chile
资金
- Celulosa Arauco & Constitucion S.A.
The relationship between the occurrence of forest fires in central Chile and the total concentration of dioxins and furans (PCDD/F) in nearby coastal waters was analyzed. The data for this analysis was obtained from a long-term environmental monitoring program (PROMNA) in the Bio-Bio Region. Quantification of PCDD/F was performed using HRGC/HRMS at the MSS laboratory in England. Between 2006 and 2014, peaks were observed in February 2007 and 2012. These concentration maxima coincided with major forest fires in the Bio-Bio Region and particularly with those in the Itata River Basin. The January 2012 fires generated an intense short-term response that was associated with atmospheric transport which increases medium toxicity furan-type congeners concentrations (TCDF, PCDF and HxCDF) and six months later a concentration increase of low toxicity dioxin-type congeners was observed (OCDD, HpCDD and HxCDD) coinciding with maximum winter river flow. These results suggest that forest fires near the coastal zone are responsible for increases in PCDD/F concentration observed in the study area. (C) 2016 Elsevier B.V. All rights reserved.
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