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Title
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Investigation of source apportioning for -HCH in air using enantioselective analysis
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Author
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Abstract
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| Passive air samples deployed throughout Europe were analysed for the enantiomers of α-HCH. When samples were divided according to their proximity to a large water body, Baltic samples had enantiomeric fractions (EFs) < 0.500, showing a consistent excess of the (-) α-HCH enantiomer, while the Mediterranean samples had predominantly EFs > 0.500. Similarly, Atlantic samples had EFs > 0.500 at latitudes < 50 degrees N, whereas at latitudes > 50 degrees N, EFs were largely < 0.500. Inland samples showed a large range in EF values; the highest α-HCH concentrations were racemic, whereas at lower α-HCH concentrations the spread in the EFs increased. Correlations between EFs and concentrations of α-HCH, α-HCH/γ-HCH ratios, latitude and longitude of the sampling locations suggest that enantiomeric analysis is a valuable tool to investigate source apportionment for chiral pollutants. |
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Language
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English
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Source (journal)
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Cahiers bleus / Maison du boulanger [Troyes]; Amis des Cahiers bleus [Troyes] - Toyes, 1975 - 2010
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Publication
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Toyes
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Centre culturel Thibaut IV de Champagne
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2007
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ISSN
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0338-7208
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Volume/pages
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69
(2007)
, p. 1701-1704
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