Abstract
In order to monitor the pesticide residues in rice paddy soils and paddy waters in Korea and evaluate leachabilities to groundwater of the pesticides detected, paddy soils and paddy waters were collected twice from 40 sites of rice growing paddy fields in July and August in 2011, respectively. Pesticide residues in the samples were analyzed by multi-residue method with GC and HPLC. Five pesticides, such as butachlor, cypermethrin, iprobenfos, oxadiazon, and pendimethalin were detected from thirteen paddy soils and detection rate was about 16.3%, while no pesticide was detected in paddy water. As a results of the estimation of leachabilities for the pesticides detected using GUS (groundwater ubiquity score), their GUSs were less than 1.3, representing they have no potentials to leach into groundwater.
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