1 Environmental Management Laboratory, Mykolas Romeris University, Vilnius, Lithuania. Electronic address: pereiraub@gmail.com.
2 Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA), Barcelona, Spain; Catalan Institution for Research and Advanced Studies (ICRA), Barcelona, Spain.
3 European Commission, Joint Research Centre (JRC), I-21027, Ispra (VA), Italy. Electronic address: panos.panagos@ec.europa.eu.