Assessing the Contribution of Diffuse Domestic Burning as a Source of PCDD/Fs, PCBs, and PAHs to the U.K. Atmosphere
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- 作者：Rainer Lohmann ; Grant L. Northcott ; and Kevin C. Jones
- 刊名：Environmental Science & Technology
- 出版年：2000
- 出版时间：July 15, 2000
- 年：2000
- 卷：34
- 期：14
- 页码：2892 - 2899
- 全文大小：121K
- 年卷期：v.34,no.14(July 15, 2000)
- ISSN：1520-5851
文摘
Ambient air samples were taken concurrently at foursites in northwest England to assess the role of domesticburning of coal/wood on ambient levels of PCDD/Fs,PCBs (including co-PCBs), and PAHs. Fifty-six samples(ca. 800 m3 each) were taken in January and February 1998at an urban site, a rural reference site, and two villagesites, which relied on domestic burning for space heating.Correlations with meteorological parameters found theurban site to be a source area of all POPs investigated,while the village sites had a local impact of PAHs and, toa lesser extent, PCDD/Fs. PCDD/F-levels changedsimultaneously at all sites, pointing toward a combinationof regional meteorological effects and increased domesticburning. Two sampling events, marked by low ambienttemperatures and wind speeds, showed substantial increasesin PCDD/F and PAH concentrations (by factors of 2-5).We estimate that local sources at the villages accountedfor ~25% of the 
TEQ (with ~75% stemming fromadvective transport) and ~75% of the PAHs in theambient air at those sites (~25% advective transport)during our winter sampling events. This study singled outPCDFs, notably the lower chlorinated ones, as goodindicators of domestic burning, together with a range ofPAHs. The co-PCBs #126 and 169 were found to behave likePCDD/Fs and PAHs rather than the more abundant"regular" PCBs, confirming that they have different sourcesto the environment.
TEQ (with ~75% stemming fromadvective transport) and ~75% of the PAHs in theambient air at those sites (~25% advective transport)during our winter sampling events. This study singled outPCDFs, notably the lower chlorinated ones, as goodindicators of domestic burning, together with a range ofPAHs. The co-PCBs #126 and 169 were found to behave likePCDD/Fs and PAHs rather than the more abundant"regular" PCBs, confirming that they have different sourcesto the environment.