Retention of pesticides in soil columns modified "in situ" and "ex situ" with a cationic surfactant

  1. Rodríguez-Cruz, M.S. 1
  2. Sánchez-Martín, M.J. 1
  3. Andrades, M.S. 2
  4. Sánchez-Camazano, M. 1
  1. 1 Instituto de Recursos Naturales y Agrobiología de Salamanca
    info

    Instituto de Recursos Naturales y Agrobiología de Salamanca

    Salamanca, España

    ROR https://ror.org/051p0fy59

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Science of The Total Environment

ISSN: 0048-9697

Año de publicación: 2007

Volumen: 378

Número: 1-2

Páginas: 104-108

Tipo: Artículo

DOI: 10.1016/J.SCITOTENV.2007.01.021 PMID: 17320152 SCOPUS: 2-s2.0-34147115128 WoS: WOS:000246949000021 GOOGLE SCHOLAR

Otras publicaciones en: Science of The Total Environment

Repositorio institucional: lockAcceso abierto Editor

Resumen

A study of the effect of a clayey soil modified in situ and ex situ with the cationic surfactant octadecyltrimethylammonium bromide (ODTMA), on the retention of linuron, atrazine and metalaxyl was carried out. Leaching of these compounds was studied in columns of a natural clayey soil and the same clayey soil modified by direct injection of the surfactant in situ, and in columns of a natural sandy soil and the same sandy soil modified by intercalation of a barrier of the clayey soil saturated ex situ with the surfactant. Breakthrough curves indicated the total immobilization of linuron in modified soils and a decrease in the leaching kinetics of atrazine and metalaxyl compared to what was obtained in the natural soil. The results indicate the use of the clayey soil modified in situ or ex situ with the surfactant ODTMA could be of interest in the immobilization of pesticides of different hydrophobicities. © 2007 Elsevier B.V. All rights reserved.