… ⁠) The PNEC value is the maximum concentration of a chemical or its degradation product in the environment at which there are no adverse effects on the ecosystem. … (⁠ RAC ⁠) The RAC is a parameter from the approval procedure for plant protection products. As with the PNEC, it indicates the maximum concentration of a pesticide … and non-evaluated micropollutants forming non-evaluated degradation/ transformation products. Groundwater The threshold values according to the German Groundwater …

… projects on marine geoengineering, provided that it serves to enhance primary production, i.e., ocean fertilization. Other marine geoengineering methods in … projects on marine geoengineering, provided that it serves to enhance primary production, i.e., ocean fertilization. Other marine geoengineering methods in …

… NERs  is currently not precisely specified. NER comprise parent and transformation products of unknown extent and unknown composition Hidden hazard or a safe sink? … matrix are hidden hazards as it is possible that parent substance or transformation products are able to be mobilised again. For regulatory use, classification of … NERs  is currently not precisely specified. NER comprise parent and transformation products of unknown extent and unknown composition … NERs have many facets – …