Chiral persistent organic pollutants as tracers of atmospheric sources and fate: review and prospects for investigating climate change influences

Developmental Biology

Liisa M. Jantunen³  Terry F. Bidleman²  Fiona Wong⁴  Perihan Binnur Kurt-Karakus¹ 

[1] Faculty of Engineering, Department of Environmental Engineering, Bahcesehir University, Ciragan Caddesi Osmanpasa Mektebi Sokak 11 No: 4-6, 34353, Besiktas, Istanbul, Turkey$$;Chemistry Department, Umeå University, Umeå, SE-901 87, Sweden$$Centre for Atmospheric Research Experiments, Environment Canada, 6248 Eighth Line, Egbert, ON, L0L 1N0, Canada$$Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada$$;Centre for Atmospheric Research Experiments, Environment Canada, 6248 Eighth Line, Egbert, ON, L0L 1N0, Canada$$;Department of Applied Environmental Science (ITM), Stockholm University, Stockholm, SE-106 91, Sweden$$

关键词: Chiral;    Persistent organic pollutants;    Soil;    Water;    Climate;   

DOI  :  10.5094/APR.2012.043

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

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.

【 授权许可】

Unknown   

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