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Adsorption and desorption of organotin compounds to upland and wetland soils

Title data

Huang, Jen-How ; Matzner, Egbert:
Adsorption and desorption of organotin compounds to upland and wetland soils.
In: European Journal of Soil Science. Vol. 55 (2004) Issue 4 . - pp. 693-698.
ISSN 1351-0754
DOI: https://doi.org/10.1111/j.1365-2389.2004.00634.x

Abstract in another language

Organotin compounds (OTC) are deposited from the atmosphereinto terrestrial ecosystems and can accumulate in soils. We studied the adsorption and desorption of methyltin and butyltin compounds in organic and mineral soils in batch experiments. The adsorption and desorption isotherms for all species and soils were linear over the concentrationrange of 10-100 ng Sn ml-1. The strength of OTC adsorption correlated well with the carbon content and cation exchange capacity of the soil and was in the order mono- > di- > tri-substituted OTCs and butyltin > methyltin compounds. The OTC adsorption coefficients were much larger in organicsoils (Kd > 104) than in mineral soils. The adsorption and desorption showed a pronounced hysteresis. Trimethyltin adsorption was partly reversible in all soils (desorption 2-12% of the adsorbed amounts). Dimethyltin, tributyltin and dibutyltin exhibited reversible adsorption only in mineral soils (desorption 4-33% of the adsorbed amounts). Mono-substituted OTCs adsorbed almost irreversibly in all soils(desorption <1% of adsorbed amounts). Trimethytin was more mobile and more bioavailable in soils than other OTCs. It might be therefore be leached from soils and accumulate in aquatic ecosystems. The other OTCs are scarcely mobile and are strongly retained in soils.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER18544
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Chair Soil Ecology - Univ.-Prof. Dr. Egbert Matzner
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 13 Aug 2015 06:12
Last Modified: 13 Aug 2015 06:12
URI: https://eref.uni-bayreuth.de/id/eprint/17994