El herbicida oxadiazon es usado como control de malezas en Colombia; sin embargo, la aplicación esta sustancia, al igual que otros herbicidas, puede afectar fauna asociada a cuerpos agua. objetivo este estudio fue evaluar los efectos letales, subletales, morfométricos y teratológicos larvas Engystomops pustulosus expuestas tres volúmenes hábitat. Se utilizaron estado 25 Gosner se expusieron dur...

The persistent organic pollutants (POPs) due to their physicochemical properties can be widely spread all over the globe; as such they represent a serious threat to both humans and wildlife. According to Stockholm convention out of 24 officially recognized POPs, 16 are pesticides. The atmospheric life times of pesticides, up to now were estimated based on their gas-phase reactivity. It has been...

Um procedimento simples, rápido e preciso de cromatografia líquida de alta eficiência (HPLC) foi desenvolvido para a determinação de oxadiazona em formulações concentradas de pesticidas emulsificáveis. 20 μL de amostra, diluída em acetronitrila, foram injetados em uma coluna Kromasil C18 (250 × 4,6 mm, 5 μm), usando acetonitrila:água (80:20) como fase móvel, numa velocidade de fluxo de 1 mL min...

In order to assess pollutant transfer in Camargue ponds from bordering agrosystems, a biomonitoring assay was conducted in irrigation and drainage channels of rice fields in the Rhone Delta (France). A filter-feeding bivalve, the Asian clam, Corbicula fluminea, was used as bioindicator and caged in upstream and downstream channels of an area of conventional rice fields. After 6 weeks incubation...