Ecotoxicological evaluation of industrial port of Venice (Italy) sediment samples after a decontamination treatment.
This work assesses the ecotoxicological effects of polluted sediment after a decontamination treatment process using a new sediment washing technique. Sediment samples were collected from four sites in Marghera Port industrial channels (Venice, Italy). Ecotoxicological evaluations were performed with Vibrio fischeri and Crassostrea gigas bioassays. Whole sediment and elutriate were deemed as the most suitable environmental matrices for this study. Toxicity scores developed in the Lagoon of Venice for V. fischeri on whole sediment and for C. gigas on elutriate were considered for the final ranking of samples. Ecotoxicological results showed that the treated sediment samples presented both acute and sub-chronic toxicities, which were mainly attributed to the presence of some remaining chemicals such as metals and polyaromatic hydrocarbons. The acute toxicity ranged from low to medium, while the sub-chronic one from absent to very high, suggesting that treated sediments could not be reused in direct contact with seawater.
Libralato
Giovanni
G
Environmental Sciences Department, Venice University Cà Foscari, Campo della Celestia 2737/b, I-30122 Venice, Italy. giovanni.libralato@unive.it
Losso
Chiara
C
Arizzi Novelli
Alessandra
A
Citron
Marta
M
Della Sala
Stefano
S
Zanotto
Emanuele
E
Cepak
Franka
F
Volpi Ghirardini
Annamaria
A
D048908:Aliivibrio fischeri / Q000187:drug effects; D000818:Animals; D049896:Crassostrea / Q000196:embryology; D054750:Ecotoxicology / Q000379:methods*; D004625:Embryo, Nonmammalian / Q000187:drug effects; D004784:Environmental Monitoring / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis / Q000633:toxicity*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019015:Geologic Sediments / Q000032:analysis*; D007220:Industrial Waste / Q000009:adverse effects / Q000032:analysis; D007558:Italy; D008670:Metals / Q000633:toxicity; D011084:Polycyclic Aromatic Hydrocarbons / Q000633:toxicity; D018675:Toxicity Tests
D004785:Environmental Pollutants; D007220:Industrial Waste; D008670:Metals; D011084:Polycyclic Aromatic Hydrocarbons