Water-sediment system modelling, Kinetics evaluation & review, CAKE, KinGUI, ModelMaker, Normalisation, degradation data laboratory, field studies, Advice parametrisation, QSARs, Analysis of field, semi-field data, lysimeters, Study monitoring co-ordination

Environment

Enviresearch are specialists in environmental assessments. Our experienced team of fate scientists, environmental modellers and ecotoxicologists offer a range of services to assess the environmental risk from active substances, metabolites and products.

In environmental fate, these range from kinetic evaluations to derive individual endpoints, through to lower and higher-tier exposure modelling and assessments at the field and landscape scale. Follow the links for information on our environmental fate services in the agrochemicals, biocides, REACH, human medicines and veterinary medicines sectors.

In ecotoxicology and environmental risk assessment, our services range from standard assessments e.g. birds & mammals, non-target arthropods, to higher-tier approaches, e.g. design of bespoke ecotoxicity testing and ecological modelling. Follow these links for information on our ecotoxicology and environmental risk assessment services in the agrochemicals, biocides, REACH, human medicines and veterinary medicines sectors.

Development of Guidance on Aged Sorption

The Aged Sorption Guidance has come a long way since its first appearance in 2010. After a thorough review of the guidance, the EFSA PPR panel recently published a Statement in which they ask for adjustments and additional testing. Enviresearch team members Sabine Beulke and Wendy van Beinum play an important role in the development and revisions of the guidance.

Aged sorption (sometimes referred to as time-dependent sorption) describes the potential of sorption strength in soil to increase with time. Pesticides often show an increase in sorption strength over prolonged time, beyond what is measured in standard adsorption-desorption studies (OECD 106). An increase in sorption reduces the risk of leaching, and therefore reduces the risk of groundwater contamination. The purpose of the Aged Sorption Guidance is to provide a standard method for quantifying aged sorption for use in the risk assessment. Once an agreed guidance is approved, the proposed procedures will give applicants the option to account for aged sorption in the groundwater risk assessment (Tier 2a).