Dissipation of some citrus selective residual herbicides in an irrigation well

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 g...

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Bibliographic Details
Published in:Journal of Chromatography A 1998-01, Vol.795 (1), p.125-131
Main Authors: Gómez de Barreda, D, Gamón Vila, M, Lorenzo Rueda, E, Saez Olmo, A, Garcia de la Cuadra, J, Ten, A, Peris, C
Format: Article
Language:English
Subjects:
Analysis methods
Applied sciences
Chromatography, Gas - methods
Chromatography, High Pressure Liquid - methods
Citrus
Exact sciences and technology
Fresh Water - chemistry
Herbicides - chemistry
Herbicides - metabolism
Natural water pollution
Pesticide Residues - analysis
Pesticide Residues - chemistry
Pesticide Residues - metabolism
Pesticides
Pollution
Reproducibility of Results
Time Factors
Triazines
Water Pollutants, Chemical - analysis
Water treatment and pollution
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Summary: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.
ISSN:0021-9673
DOI:10.1016/S0021-9673(97)01066-2