Abstract：
:In this study, one of the largest estuaries in the Gulf Coast of USA was investigated for Cu forms and fractionations. Both the water and sediment samples in subsegments of the Lake Pontchartrain basin were collected and Cu forms in dissolved phase and sediment phase were analyzed. The BCR sequential extraction procedure was used to extract Cu in exchangeable, reducible, oxidizable and residual fractions in sediments. The results showed that the residual fraction of Cu was a major contributor in Tangipahoa River and I-10 Bridge sediments, while the residual and oxidizable fractions in the case of oil refinery sediments. Cu partitioning in Lake Pontchartrain basin water showed the decreasing trend of inert > labile > organic in both spring and summer. The release of Cu from the sediments into the water column was greater in summer as compared to spring and vice versa. Lower temperature helps in the adsorption of Cu on the surface of sediments in early spring due to low disturbance and temperature.
journal_name
Chemospherejournal_title
Chemosphereauthors
Zhang Z,Wang JJ,Ali A,DeLaune RDdoi
10.1016/j.chemosphere.2017.12.115subject
Has Abstractpub_date
2018-03-01 00:00:00pages
448-454eissn
0045-6535issn
1879-1298pii
S0045-6535(17)32085-4journal_volume
195pub_type
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