Short-Chain Chlorinated Paraffins in Zurich, Switzerland: Atmospheric Concentrations and Emissions
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Authors
Short-chain chlorinated paraffins (SCCPs) are of concern due to their
potential for adverse health effects, bioaccumulation, persistence, and
long-range transport. Data on concentrations of SCCPs in urban areas and
underlying emissions are still scarce. In this study, we investigated
the levels and spatial distribution of SCCPs in air, based on two
separate, spatially resolved sampling campaigns in the city of Zurich,
Switzerland. SCCP concentrations in air ranged from 1.8 to 17 ng·m–3 (spring 2011) and 1.1 to 42 ng·m–3 (spring 2013) with medians of 4.3 and 2.7 ng·m–3,
respectively. Both data sets show that atmospheric SCCP levels in
Zurich can vary substantially and may be influenced by a number of
localized sources within this urban area. Additionally, continuous
measurements of atmospheric concentrations performed at one
representative sampling site in the city center from 2011 to 2013 showed
strong seasonal variations with high SCCP concentrations in summer and
lower levels in winter. A long-term dynamic multimedia environmental
fate model was parametrized to simulate the seasonal trends of SCCP
concentrations in air and to back-calculate urban emissions. Resulting
annual SCCP emissions in the city of Zurich accounted for 218–321 kg,
which indicates that large SCCP stocks are present in urban areas of
industrialized countries.
Original language | English |
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Journal | Environmental Science & Technology |
Volume | 49 |
Issue number | 16 |
Pages (from-to) | 9778 - 9786 |
Number of pages | 9 |
ISSN | 0013-936X |
DOIs | |
Publication status | Published - 18.08.2015 |
- Chemistry