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Adsorption of transformation products of atrazine by soil

1990; Wiley; Volume: 30; Issue: 2 Linguagem: Inglês

10.1111/j.1365-3180.1990.tb01695.x

1365-3180

W.W.M. Brouwer, J.J.T.I. Boesten, W.G. Siegers,

Soil Carbon and Nitrogen Dynamics

Summary: The adsorption of atrazine and its transformation products, desisopropylatrazine (2‐chloro‐4‐ethylamino‐6‐amino‐l,3,5‐triazine), desethyl‐atrazine (2‐chloro‐4‐amino‐6‐isopropylamino‐l,3,5‐triazine) and hydroxyatrazine (2‐hydroxy‐4‐ethylamino‐6‐isopropylamino‐l,3,5‐triazine) to four top‐soils was measured. Adsorption coefficients decreased in the order hydroxy atrazine, atrazine, desisopropylatrazine, and desethyl‐atrazine: the distribution coefficient between organic matter and water ( K OM ) ranged from 40 to 100 dm 3 kg −1 for atrazine, from 30 to 60 dm 3 kg −1 for desisopropylatrazine, from 20 to 50 dm 3 kg −1 for desethylatrazine and from 100 to 590 dm 3 kg −1 for hydroxy atrazine. Data are discussed in the context of earlier literature.