Atmospheric speciation of ionic organotin, organolead and organomercury compounds in NE Bavaria (Germany)

Huang, Jen-How and Klemm, Otto. (2004) Atmospheric speciation of ionic organotin, organolead and organomercury compounds in NE Bavaria (Germany). Atmospheric Environment, 38 (30). pp. 5013-5023.

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Organotin (OTC), organolead (OLC) and organomercury (OMC) compounds are highly toxic and exhibit a potential negative effect on terrestrial ecosystems. Individual ionic OTC, OLC and OMC compounds were identified and their concentrations determined in the gas phase, aerosol particles, and bulk precipitation at a rural (Waldstein) and an urban (Bayreuth city) site in NE-Bavaria. At both sites, butyltins, methyltins, octyltins, trimethyllead and monomethylmercury concentrations in the gas phase were < 100 pg m(-3) (determined as corresponding Sn, Pb and Hg concentrations, respectively) with the dominance of tri- and di-substituted OTC and octyltins. The same species were found in bulk precipitation with concentrations < 25 ng l(-1) (Sn, Pb, Hg) with the dominance of mono- substituted OTC. In aerosols, only butyltins, dimethyltin and monomethyltin (< 500 pg Sn m(-3)) were found and mono-substituted OTC predominated. No significant difference of concentrations of organometallic compounds in the atmosphere at the two sites was found. For OTC, the washout factors was in the order: mono- greater than or equal to di- > tri-substituted OTC, and the gas/particle partition coefficients were mono- > di- > tri-substituted OTC. The distribution spectrum of OTC in aerosols showed the strong linkage of OTC to the long-lived particles and high accumulation of OTC in the filter at the Waldstein site. The results indicate that long-range-transport of organometallic compounds in the atmosphere is an important source at our both sites. Aerosol particles may serve as a sink in the chemical cycles of OTC in the atmosphere, especially for monomethyltin and monobutyltin. (C) 2004 Elsevier Ltd. All rights reserved.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geowissenschaften > Umweltgeowissenschaften (Alewell)
UniBasel Contributors:Huang, Jen-How
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:03 Nov 2017 11:28
Deposited On:03 Nov 2017 11:28

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