1. Department of Chemical Technology, Chemical Faculty, Gdansk University of Technology, ul. Narutowicza 11/12, 80-952 Gdansk, Poland (E-mail: ewwlasza@chem.pg.gda.pl)
2. Department of Chemical Technology, Chemical Faculty, Gdansk University of Technology, ul. Narutowicza 11/12, 80-952 Gdansk, Poland (E-mail: mjancz@chem.pg.gda.pl)
3. Department of Chemical Technology, Chemical Faculty, Gdansk University of Technology, ul. Narutowicza 11/12, 80-952 Gdansk, Poland (E-mail: jhupka@chem.pg.gda.pl)
4. Environmental Protection Department, Marine Institute of Gdansk, ul. Benzynowa 1, 80-938 Gdansk, Poland (E-mail: marzena@chem.pg.gda.pl)