Abstract
The performance of a newly developed column method for pesticide transformation rate measurements in the subsoil was tested using (Z)- and (E)-3-chloroallyl alcohol as model compounds. The subsoil columns were filled in situ. In the column experiment the half-life ranged from 0.5-5.2 d for (Z)-3-chloroallyl alcohol and from 1.0-5.5 d for (E)-3-chloroallyl alcohol. The transformation rates were compared with rates in laboratory incubation systems, in which the 3-chloroallyl alcohols were transformed gradually in the first three days, with a half-life of 1.9 d for both isomers. The two methods yielded similar results for these rapidly transforming compounds.
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