Environmental Fate

The environmental fate of an agrochemical covers all of the processes by which the substance is transported and transformed in the environment. These include degradation in soil, water and sediment, adsorption onto solid materials and volatilization into the air.

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Analytical methods may include:

  • Physical or chemical degradation in soil, water or air (e.g. hydrolysis, photolysis)
  • Biological degradation and accumulation in soil (laboratory and field)
  • Biological degradation in water (water/sediment studies)
  • Adsorption and desorption
  • Leaching in soil (laboratory and field, lysimeter)
  • Volatilization from the plant, soil or water surface

Estimation of parameters

Data from the studies listed above are used to estimate the substance’s risk potential and for other purposes, such as calculating environmental concentrations. Here, the most important parameters are the degradation rate, DT50 or 90,  and sorption coefficients (Kd, Koc). These parameters are determined by kinetic evaluation.

Our services with regard to environmental fate

  • Check of Completeness for respective dossier sections
  • Analysis and evaluation of the available environmental fate data
  • Study management and monitoring, report writing
  • Estimation of parameters based on e-fate studies (e.g. by indiv. statistics, according to FOCUS and EFSA rec­om­men­da­tions, inverse modelling)
  • Determination of all important end-points and parameters needed for calculating environmental concentrations
  • Report writing and dossier compilation

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