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Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.
Fate and distribution of 14C-atrazine in a tropical oxisol.
Chemosphere 40, 449-455 (2000)
The herbicide atrazine is the most commonly detected pesticide in groundwater world-wide. A new microcosm test-system was used to determine the fate of 14C-atrazine in a Brazilian oxisol. 14C Ring-labelled atrazine was applied in a mixture with the commercial product Gesaprim 500 (Novartis) at a rate of 3 kg ha−1. During two months, about 1% of the initially applied amount was lost by volatilization. The mineralization of the pesticide, measured directly using 14CO2 evolved from the applied pesticide, was between 0.09% and 0.16%, whereas less than 0.2% was leached. The distribution of radioactivity in the soil profile showed that most of the radioactivity remained in the top soil down to a 3 cm depth. The radioactivity in the upper 3 cm of the column was adsorbed perferably in fulvic acid (FA) and humin fractions.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Atrazine Tropical oxisol Microcosm Volatilization Mineralization Leaching
ISSN (print) / ISBN
0045-6535
e-ISSN
1879-1298
Journal
Chemosphere
Quellenangaben
Volume: 40,
Issue: 5,
Pages: 449-455
Publisher
Elsevier
Publishing Place
Kidlington, Oxford
Reviewing status
Peer reviewed
Institute(s)
Institute of Soil Ecology (IBOE)