Chiara Maggia, Maria Teresa Berduccia, Jessica Bianchia,∗, Michele Gianib, Luigi Campanellac a Advanced Institute for Environmental Protection and Research – ISPRA, Via di Casalotti 300, Rome, Italy b National Institute of Oceanography and Experimental Geophysics, Biological Oceanography Department, Via Piccard 54, 34100 Trieste, Italy c Chemical Department University “La Sapienza”, P.le Aldo Moro 5, 00185 Rome, Italy