<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Granulometric, chemical, and leaching properties of sediments dredged in the Plomin Bay (Northern Adriatic Sea, Croatia) were investigated in order to asses the risk of remobilisation of heavy metals into the water column. In total 65 samples from 65 sampling sites were taken from different sediment depths within the bay. Analysis of variance confirmed the homogeneity of granulometric and elemental composition of the investigated sediment throughout its volume. Granulometric analysis showed that all samples corresponded to a pelitic fraction (&lt;0.063 mm). Bulk elemental mass fractions in the sediments were similar to literature data on relatively unpolluted areas of the Adriatic Sea. High sedimentation rate caused by constant inflow of material from the Boljunčica River drainage may be responsible for low levels of heavy metals and negligible influence of fly and bottom ash from a nearby disposal site on the chemical composition of the sediments. In contact with sea water only 0.29 mg kg-1 of V, 0.04 mg kg-1 of Cr, 0.07 mg kg-1 of Ni, 0.33 mg kg-1 of Cu, 0.67 mg kg-1 of Zn and 0.06 mg kg-1 of Pb could be remobilised from sediment material into the water column. However, these values increased three to ten times in case of leaching with organic acids.</abstract>

Granulometric, chemical, and leaching properties of sediments dredged in the Plomin Bay (Northern Adriatic Sea, Croatia) were investigated in order to asses the risk of remobilisation of heavy metals into the water column. In total 65 samples from 65 sampling sites were taken from different sediment depths within the bay. Analysis of variance confirmed the homogeneity of granulometric and elemental composition of the investigated sediment throughout its volume. Granulometric analysis showed that all samples corresponded to a pelitic fraction (<0.063 mm). Bulk elemental mass fractions in the sediments were similar to literature data on relatively unpolluted areas of the Adriatic Sea. High sedimentation rate caused by constant inflow of material from the Boljunčica River drainage may be responsible for low levels of heavy metals and negligible influence of fly and bottom ash from a nearby disposal site on the chemical composition of the sediments. In contact with sea water only 0.29 mg kg-1 of V, 0.04 mg kg-1 of Cr, 0.07 mg kg-1 of Ni, 0.33 mg kg-1 of Cu, 0.67 mg kg-1 of Zn and 0.06 mg kg-1 of Pb could be remobilised from sediment material into the water column. However, these values increased three to ten times in case of leaching with organic acids.

Chemical Profile of Plomin Bay Sediments

USKNI, Laboratory for Applied Nuclear Analytics, Zagreb, Croatia

Institute Ruđer Bošković, Zagreb, Croatia

Archives of Industrial Hygiene and Toxicology

{"article-title":"Chemical Profile of Plomin Bay Sediments"}

Granulometric, chemical, and leaching properties of sediments dredged in the Plomin Bay (Northern Adriatic Sea, Croatia) were investigated in order to asses...

Chemical Profile of Plomin Bay Sediments

Published Online: Sep 29, 2009

Page range: 281 - 287

DOI: https://doi.org/10.2478/10004-1254-60-2009-1919

Keywords
izluživanje, morska voda, morski sedimenti, organski kompleksi, remobilizacija, teški metali, uklanjanje

This content is open access.

Chemical Profile of Plomin Bay Sediments

Published Online: Sep 29, 2009

Page range: 281 - 287

DOI: https://doi.org/10.2478/10004-1254-60-2009-1919

Keywordsizluživanje, morska voda, morski sedimenti, organski kompleksi, remobilizacija, teški metali, uklanjanje

This content is open access.

Keywords
izluživanje, morska voda, morski sedimenti, organski kompleksi, remobilizacija, teški metali, uklanjanje