Molecular properties affecting the adsorption coefficient of pesticides from various chemical families - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environmental Science and Pollution Research Année : 2014

Molecular properties affecting the adsorption coefficient of pesticides from various chemical families

Résumé

Forty pesticides were selected in function of their chemical families and their physico-chemical properties to represent a wide range of pesticide properties. Adsorption of these pesticides was studied on two soils by batch experiments. The two soils differed largely in organic matter and calcite contents. Distribution coefficient Kd was determined for each pesticide on the two soils. Adsorption was higher for the soil having the highest organic matter content and the lowest calcite content. In order to identify pesticide properties governing retention, eight molecular descriptors were determined from three-dimensional (3D) structure of molecules. Class-specific quantitative structure properties relationship (QSPR) soil adsorption models using one and two parameters were developed from experimental Kd. Three properties seemed to influence most retention of pesticides: hydrophobicity, solubility, and polarisability. Models combining these properties were suggested and discussed.
Fichier non déposé

Dates et versions

hal-02947490 , version 1 (24-09-2020)

Identifiants

Citer

Julie Langeron, Alodie Blondel, Stéphanie Sayen, Eric Hénon, Michel Couderchet, et al.. Molecular properties affecting the adsorption coefficient of pesticides from various chemical families. Environmental Science and Pollution Research, 2014, 21 (16), pp.9727-9741. ⟨10.1007/s11356-014-2916-6⟩. ⟨hal-02947490⟩
16 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More