1 23 Environmental Monitoring and Assessment An International Journal Devoted to Progress in the Use of Monitoring Data in Assessing Environmental Risks to Man and the Environment ISSN 0167-6369 Volume 181 Combined 1-4 Environ Monit Assess (2011) 181:243-254 DOI 10.1007/s10661-010-1826-4 Polychlorinated biphenyls in two salt marsh sediments of the Venice Lagoon Cristian Mugnai, Silvia Giuliani, Luca G. Bellucci, Claudio Carraro, Maurizio Favotto & Mauro Frignani