Plastic additive content in soil, earthworm and grain samples from the Field Plot Experiment

Determination of plastic additive content using UHPLC-MS/MS. The soil samples were processed and analysed based on the method by Dvorakova et al. (2024, https://doi.org/10.1016/j.scitotenv.2024.174492). The earthworm samples were analysised using an in-house validated method described in an under-preparation manuscript by Saartama et al. entitled "Effects of conventional and biodegradable microplastics on earthworm Eisenia andrei in two generations" . The grain samples were analysed using an in-house validated method that will be published, hopefully in the near future.