Loss of chlorpyrifos in pond water: Examination of results using three simple mathematical models
Titel:
Loss of chlorpyrifos in pond water: Examination of results using three simple mathematical models
Auteur:
Reimer, G. J. Webster, G. R. B.
Verschenen in:
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes
Paginering:
Jaargang 15 (1980) nr. 5 pagina's 559-569
Jaar:
1980
Inhoud:
Four outdoor artificial pools were fortified with two formulations of chlorpyrifos (the active ingredient in Dursban insecticide), an emulsifiable concentrate, and a slow-release granular formulation. From concentration-time data collected during summer months, the half life of chlorpyrifos was found to be 5 ± 3 h and 14 ± 4 h for the emulsifiable concentrate and slow release formulations respectively. The concentration-time data was analyzed by three mathematical models; the power rate model, the hyperbolic rate model, and an empirical power function. Their average correlation coefficients, determined by linear regression, were respectively, 0.78 ± 0.08, 84 ± 0.07, 0.76 ± 0.16
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