title: Dissipation of some citrus selective residual herbicides in an irrigation well.
abstract: The aim of this work was to study the behaviour of some of the main citrus selective residual herbicides in the water of an irrigation well. The chemicals used were: atrazine, simazine, terbuthylazine, terbutryn, terbumeton, bromacil and diuron. The simetric triazines and bromacil were analyzed by gas chromatography and diuron by HPLC. The mentioned pesticides were introduced in the well in order to simulate a point-source contamination. Levels of contamination of the well due to herbicide application were about 1 mg/l, however, dissipation of the herbicides was almost complete 8 days after application, except for bromacil and diuron which persisted longer than the s-triazines.
authors.affiliation: Instituto Valenciano de Investigaciones Agrarias (IVIA), Generalitat Valenciana, Moncada, Valencia, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Gómez de Barreda
authors.forename: M
authors.initials: M
authors.lastname: Gamón Vila
authors.forename: E
authors.initials: E
authors.lastname: Lorenzo Rueda
authors.forename: A
authors.initials: A
authors.lastname: Saez Olmo
authors.forename: D
authors.initials: D
authors.lastname: Gómez de Barreda
authors.forename: J
authors.initials: J
authors.lastname: Garcia de la Cuadra
authors.forename: A
authors.initials: A
authors.lastname: Ten
authors.forename: C
authors.initials: C
authors.lastname: Peris
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D002957:Citrus; D005618:Fresh Water / Q000737:chemistry*; D006540:Herbicides / Q000737:chemistry* / Q000378:metabolism; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D015203:Reproducibility of Results; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006540:Herbicides; D010573:Pesticide Residues; D014874:Water Pollutants, Chemical