摘要：An approach based on hypothesis testing for the management of persistent inorganic and
organic toxic chemicals (PTS/POPs) detected in clams and mussels from the Venice lagoon is presented.
The chemicals of interest for this evaluation were the polychlorinated biphenyls (PCBs), dibenzodioxins
(PCDDs), and dibenzofurans (PCDFs), hexachlorobenzene (HCB), and the heavy metals cadmium (Cd),
mercury (Hg), and lead (Pb). Two statistically different populations of data for PCDDs+PCDFs (TEQs),
HCB, Cd, and Pb, associated with biota samples collected respectively in the lagoon central district and
in the southern and northern districts were identified. The central district is under the impact of the Porto
Marghera industrial settlement and the city of Venice, whereas the southern and northern districts are
subject to a general impact. Of the aforementioned chemicals, those with more discriminating power were
found to be HCB and PCDDs+PCDFs.
