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Chiral persistent organic pollutants as tracers of atmospheric sources and fate: review and prospects for investigating climate change influences
Umeå University, Faculty of Science and Technology, Department of Chemistry. (Arcum)
2012 (English)In: Atmospheric Pollution Research, ISSN 1309-1042, Vol. 3, no 4, 371-382 p.Article in journal (Refereed) Published
Abstract [en]

Elimination of persistent organic pollutants (POPs) under national and international controls reduces “primary” emissions, but “secondary” emissions continue from residues deposited in soil, water, ice and vegetation during former years of high usage. Secondary sources are expected to dominate in the future, when POPs transport and accumulation will be controlled by air–surface exchange and the biogeochemical cycle of organic carbon. Climate change is likely to affect mobilization of POPs through, e.g., increased temperature, loss of ice cover in polar regions, melting glaciers and changes in soil and water microbiology which affect degradation and transformation. Chiral compounds offer advantages for following transport and fate pathways because of their ability to distinguish racemic (newly released or protected from microbial attack) and nonracemic (microbially altered) sources. Here we explain the rationale for this approach and suggest applications where chiral POPs could aid investigation of climate–mediated exchange and degradation processes. Examples include distinguishing agricultural vs. non–agricultural and recently used vs. residual pesticides, degradation and sequestration processes in soil, historical vs. recent atmospheric deposition, sources in arctic air and influence of ice cover on volatilization.

Place, publisher, year, edition, pages
2012. Vol. 3, no 4, 371-382 p.
Keyword [en]
Chiral, Persistent organic pollutants, Soil, Water, Climate
National Category
Chemical Sciences
URN: urn:nbn:se:umu:diva-60274DOI: 10.5094/APR.2012.043OAI: diva2:559209

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Available from: 2012-10-08 Created: 2012-10-08 Last updated: 2016-05-18Bibliographically approved

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Bidleman, Terry F
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