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O objetivo deste trabalho foi avaliar o destino ambiental dos herbicidas acetochlor, 2,4-D, diuron, clomazone, thidiazuron, paraquat, simazine, fluazifop-p-butil, clethodim, oxyfluorfen, flumioxazin, carfentrazone-ethyl, ametrina, trifluralin e MSMA em áreas de cultivo de algodão, café e citros, utilizando o modelo de fugacidade nível I. Na metodologia foram utilizadas basicamente as características físico-químicas dos herbicidas, os compartimentos ambientais e as equações de fugacidade. A avaliação preliminar do risco de contaminação pelo uso de herbicidas nas culturas de algodão, café e citros pode ser feita de forma expedita a partir das propriedades físico-químicas desses produtos, aplicando o modelo de fugacidade nível I. Para a maioria dos herbicidas avaliados, o compartimento água foi o mais vulnerável. O estudo de avaliação da predição em que se empregou o nível de fugacidade I demonstrou ser uma ferramenta importante no destino ambiental dos herbicidas estudados para as culturas de algodão, café e citros. The aim of this paper was to evaluate the environmental fate of herbicides (acetochlor, 2,4-D, diuron, clomazone, thidiazuron, paraquat, simazine, fluazifo-p-butil, clethodim, oxufluorfen, flumioxazin, carfentrazone-ethyl, ametrina, trifluralin and MSMA) in cotton, coffee and citrus cultivation areas, applying the level I fugacity model. The methodology basically used the chemical and physical characteristics of the pesticides, environmental compartments and the fugacity equations. The preliminary evaluation of risk of contamination due to the use of these pesticides on the cultures studied was carried out swiftly, based on the chemical and physical properties of these products as the level I fugacity model was applied. For most of the herbicides evaluated, the water compartment was the most vulnerable. The prediction evaluation study using fugacity level I was found to be a relevant tool for the environmental fate of the herbicides studied for cotton, coffee and citrus cultures

Distribuição nos compartimentos ambientais dos herbicidas utiilizados nas culturas de algodão, café e citros