Previous work showed the co-occurrence of the organophosphate chlorpyrifos and the s-
triazine herbicide terbuthylazine in surface waters of agricultural areas in “Lezíria do Tejo” …

Estudos anteriores mostraram a co-ocorrência do inseticida organofosforado clorpirifos e do
herbicida s-triazina terbutilazina em águas de superfície de áreas agrícolas na" Lezíria do …

Previous work showed the existence of ecotoxicity of water samples from the Alqueva
reservoir due to the presence of the herbicides atrazine, simazine, terbuthylazine and …

In freshwater systems located in agricultural areas, organisms are exposed to a multitude of
toxicologically and structurally different pesticides. For regulatory purposes it is of major …

The environmental risk assessment of pesticides is mainly performed on individual active
ingredients. In surface waters within the agricultural landscape, however, contamination is …

In freshwater ecosystems associated with agricultural areas, organisms are exposed to a
multitude of toxicologically and structurally distinct pesticides in concentrations that may …

This thesis aims to analyse whether the joint toxicity of environmentally relevant toxicants
can be predicted based on the known toxicity of the single mixture components. Two …

In a regulatory perspective addressing the cumulative effect of co-occurring chemicals is the
first and most important step in providing a more realistic hazard assessment of chemical …

Abstract Models proposed for risk assessment of chemical mixtures assume no interactions
between the chemicals. There are, however, studies indicating that some …

Results of published pesticide mixture toxicity experiments conducted with aquatic
organisms were compiled and evaluated to assess the accuracy of predictive mixture …