Leaching of Diuron, Linuron and their main metabolites in undisturbed field lysimeters (Articolo in rivista)

Type
Label
  • Leaching of Diuron, Linuron and their main metabolites in undisturbed field lysimeters (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1080/03601230802519579 (literal)
Alternative label
  • IMACHE A.L., DAHCHOUR A., ELAMRANI B., DOUSSET S., POZZONI F., GUZZELLA L. (2009)
    Leaching of Diuron, Linuron and their main metabolites in undisturbed field lysimeters
    in Journal of environmental science and health. Part B. Pesticides, food contaminants, and agricultural wastes
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • IMACHE A.L., DAHCHOUR A., ELAMRANI B., DOUSSET S., POZZONI F., GUZZELLA L. (literal)
Pagina inizio
  • 31 (literal)
Pagina fine
  • 37 (literal)
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  • 44 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • IMACHE A.L.,ELAMRANI B., Università, Hassan II, Casablanca DAHCHOUR A., Istituto di Agronomia e Veterinaria Hassan II, Rabat DOUSSET S., LIMOS, Francia POZZONI F., GUZZELLA L., CNR-IRSA, Brugherio (MB) (literal)
Titolo
  • Leaching of Diuron, Linuron and their main metabolites in undisturbed field lysimeters (literal)
Abstract
  • The increasing use of pesticides in Morocco raises the potential risk of groundwater contamination, notably in the Gharb area, which has a shallow groundwater table. Thus, the leaching of two phenyl-ureas, diuron and linuron and their metabolites through undisturbed soil columns was studied under outdoor conditions. The soil chosen is a loamy clay soil, representative of the Gharb agricultural area. After four irrigation events were applied from 31/03/2005 to 15/05/2005, leachates contained higher amounts of linuron (from 0.08% to 6.96% of applied linuron) than diuron (from 0% to 0.27%). The greater mobility of linuron might be related to its higher water solubility (64 mg . L(-1) compared with 42 mg . L(-1) for diuron) and smaller adsorption coefficient (K(oc) of 400 L . kg(-1), compared with 480 L . kg(-1) for diuron). Concerning their metabolites, greater amounts of, N'-(3,4-dichlorophenyl)-N, (DCPMU) than N'-3,4-dichlorophenylurea (DCPU) were detected N-dimethylurea in the percolates, from 0% to 0.046% and from 0% to 0.008%, respectively. At the end of the monitoring period, more linuron residues than diuron residues were recovered in the soil profiles, 25.02% and 16.41%, respectively. The diuron residues were found mainly in the 0-20 cm soil layer, whereas linuron residues reached the 20-40 cm soil layer. Under such experimental conditions, linuron leaching, and thus its potential to contaminate groundwater, is greater than that of diuron. (literal)
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