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Spatial and temporal variation, source profile of PCDD/Fs in the atmosphere of a municipal waste incinerator in China
- Source :
- Ecotoxicology and environmental safety. 184
- Publication Year :
- 2019
-
Abstract
- The mass concentrations, toxic equivalent quantity (TEQ) concentrations and congener profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the stack flue gas and ambient air of municipal solid waste incinerator (MSWI) were monitored in this study to evaluate the levels, emission characteristics, seasonal variation and emission sources of PCDD/Fs. Thirty-one ambient air samples were collected from four sites around MSWI during 2016–2017, and twelve stack flue gas samples were collected from one MSWI. Results showed that the PCDD/Fs concentrations of the stack flue gas ranged from 0.0077 to 0.021 ng I-TEQ/Nm3, with an average value of 0.016 ng I-TEQ/Nm3. The ambient air samples collected in 2016 and 2017 ranged from 0.017 to 0.27, and 0.035–0.27 pg I-TEQ/Nm3, with an average value of 0.078 and 0.10 pg I-TEQ/Nm3, respectively. The 2, 3, 4, 7, 8-PCDF always contributes most to toxicity both in stack flue gas and ambient air samples. PCDD/Fs in the ambient air of the study area showed significant seasonal differences, and the total concentration of PCDD/Fs was highest in winter, which was about 3.5–7.5 times that of summer. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used to determine the correlation between MSWI emissions and PCDD/Fs in ambient air. It is worth mentioning that MSWI is not the main source of PCDD/Fs in ambient air.
- Subjects :
- Flue gas
China
Municipal solid waste
Polychlorinated Dibenzodioxins
Health, Toxicology and Mutagenesis
0211 other engineering and technologies
02 engineering and technology
Incineration
010501 environmental sciences
01 natural sciences
Atmosphere
Stack (abstract data type)
medicine
0105 earth and related environmental sciences
021110 strategic, defence & security studies
Air Pollutants
Public Health, Environmental and Occupational Health
General Medicine
Seasonality
Dibenzofurans, Polychlorinated
medicine.disease
Pollution
Ambient air
Refuse Disposal
Congener
Environmental chemistry
Environmental science
Gases
Seasons
Environmental Monitoring
Subjects
Details
- ISSN :
- 10902414
- Volume :
- 184
- Database :
- OpenAIRE
- Journal :
- Ecotoxicology and environmental safety
- Accession number :
- edsair.doi.dedup.....66a1da7ab7d8fe4f54bf548c1c6aa2ff