The project adresses the ongoing discussion on plastic waste and particles in the environment, covering the topic of "marine littering" as well as plastics in other environmetal media. Despite some analyses for specific areas (e.g., by collections, "clean-up action"), there is no comprehensive knowledge on plastic emissions to the environment. However, such a comprehensive assessment is required to support the scientific-political discussion about mitigation strategies and possible actions. Against this background, this project aims at developing a methodological framework to analyse and quantify the input of plastic into the environment. Plastic emissions resulting from littering (of plastic waste, plastic packaging in particular) as well as various plastic applictions (in construction, agriculture etc.) are analysed.