2024-03-29T08:29:34Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/764952018-09-10T11:22:44Zcom_10261_15com_10261_6col_10261_898
Calculation and validation of Kclay as predictor for polar or ionic pesticide adsorption by soils
Hermosín, M.C.
Cornejo, J.
Cox, L.
Adsorption
Clay fraction
Kclay
Pesticide
Soil
Transport
9 pages, 1 figure, 4 tables, 41 references.-- Trabajo publicado en Part. 1: Laboratory Tests, Capt. 3: Adsorption-desorption studies.-- Cornejo, Juan y Jamet, Paul, coordinadores del libro citado.
An overview on soil adsorption data of polar, ionic and ionizable pesticide (PIP)
suggests the convenience in considering an adsorption coefficient on the clay fraction
basis, Kclay, to estimate their sorption. Some examples of Kclay calculation are given
from the Kf or Kd for whole soils (Ksoil) found in the literature. In all cases, a decrease
in the variation coefficient from Ksoil to Kclay is found. However this concept must
not be generalised. Research is needed to increase data on PIPs sorption in soils and a
better characterisation of their clay fractions. In addition an actual Kclay was measured
by determining the adsorption of selected pesticides on natural ecay fractions separated
from the soils. These measured Kclay allow to assess the validation of the calculated
Kclay.
This work has been partially founded by the spanish CICYT Projects Nos. AMB93-
0081, AMB93-0087, AMB96-044S-C02 and EU project EV SV-CT94-0470, COST-
66 Action and Junta de Andalucía by the PAI research group RNM-124 (former
No.4092).
Peer reviewed
2013-05-22T09:26:55Z
2013-05-22T09:26:55Z
2000
capítulo de libro
http://purl.org/coar/resource_type/c_3248
Serie Techniques et Pratiques. Pesticide/Soil interactions. Some current research methods: 131-139 (2000)
2-7380-0922-0
http://hdl.handle.net/10261/76495
en
open
Instituto Nacional de Investigación Agronómica de Francia