Publisher Elsevier provides open access to new research articles for 50 days to help share the current scientific results:

F. Freeling – N. Alygizakis – P. C. von der Ohe – J. Slobodník – P. Oswald – R. Aalizadeh – Ľ. Čirka – N. Thomaidis – M. Scheurer: Occurrence and potential environmental risk of surfactants and their transformation products discharged by wastewater treatment plants. Science of The Total Environment, zv. 681, str. 475–487, 2019.