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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/12431

Title: Levels and seasonal variations of organochlorine pesticides in urban and rural background air of southern Ghana
Authors: Adu-Kumi, Sam
Kareš, Radovan
Literák, Jaromír
Borůvková, Jana
Akoto, Osei
et. al
Keywords: Organochlorine pesticides
Ambient air
Passive air sampling
Issue Date: 1-Jul-2012
Publisher: Springer-Verlag
Citation: Environ Sci Pollut Res DOI 10.1007/s11356-012-1013-y
Abstract: Urban, suburban and rural background air samples were collected in southern Ghana in 2008 employing polyurethane foam disc passive air samplers (PAS). PAS were analysed for organochlorine pesticides (OCPs), namely hexachlorocyclohexanes (α-, β-, γ- and δ-hexachlorocyclohexane), dichlorodiphenyltrichloroethane including metabolites (o,p′- and p,p′- DDT, DDE and DDD), hexachlorobenzene, pentachlorobenzene, aldrin, dieldrin, endrins (endrin, endrin aldehyde and endrin ketone), isodrin, heptachlors (heptachlor, heptachlor epoxide A and heptachlor epoxide B), chlordanes (α-, β- chlordane, oxychlordane and trans-nonachlor), endosulfans (α- and β-endosulfan and endosulfan sulphate), methoxychlor and mirex using a gas chromatograph coupled to a mass spectrometer. The levels of OCPs ranged for the individual pesticides from below limit of quantification to 750 pg m−3 (for α-endosulfan), and current agricultural application seemed to be the main primary source of most abundant pesticides. Revolatilization of previously used pesticides from contaminated soils could not be ruled out either as potential secondary source of contamination, especially in warm and dry seasons and periods of intensive agricultural activities. Higher atmospheric concentrations were observed in November and December during the dry season compared to lower concentrations observed in June, July and August when the country experiences heavy rains. The highest seasonal variation was observed for currently used pesticides as α-endosulfan. A p,p′-DDT/p,p′- DDE ratio suggested recent inputs of fresh technical DDT.
Description: An article published by Springer-Verlag and also available at DOI 10.1007/s11356-012-1013-y
URI: http://hdl.handle.net/123456789/12431
Appears in Collections:College of Science

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