TY - JOUR
T1 - Chronology of anthropogenic impacts reconstructed from sediment records of trace metals and Pb isotopes in Todos os Santos Bay (NE Brazil)
AU - Andrade, R. L.B.
AU - Hatje, V.
AU - Masqué, P.
AU - Zurbrick, C. M.
AU - Boyle, E. A.
AU - Santos, W. P.C.
PY - 2017/12/15
Y1 - 2017/12/15
N2 - The evolution of the impacts of anthropogenic activities in Todos os Santos Bay was evaluated by profiles of trace metals and Pb isotopes determined in sediment cores. Fluxes of metals increased up to 12, 4 and 2 times for Cu, Pb, and Zn, respectively, compared to those recorded in the beginning of the 20th century. Stable Pb isotopes identified a decommissioned lead smelter and burning of fossil fuels as the main sources of Pb. Most metals showed minor to moderate enrichment factors (EF < 4), but Cu and Pb were highly enriched (EF = 28 and 6, respectively) at the Aratu harbor. Temporal changes in sediments were associated to different activities, namely Pb smelting, burning of fossil fuels, maritime traffic, petroleum related activities, inputs of domestic effluents, and changes in land uses. The effects of the implementation of environmental policies to improve the waters of the bay could not be identified in the evaluated cores.
AB - The evolution of the impacts of anthropogenic activities in Todos os Santos Bay was evaluated by profiles of trace metals and Pb isotopes determined in sediment cores. Fluxes of metals increased up to 12, 4 and 2 times for Cu, Pb, and Zn, respectively, compared to those recorded in the beginning of the 20th century. Stable Pb isotopes identified a decommissioned lead smelter and burning of fossil fuels as the main sources of Pb. Most metals showed minor to moderate enrichment factors (EF < 4), but Cu and Pb were highly enriched (EF = 28 and 6, respectively) at the Aratu harbor. Temporal changes in sediments were associated to different activities, namely Pb smelting, burning of fossil fuels, maritime traffic, petroleum related activities, inputs of domestic effluents, and changes in land uses. The effects of the implementation of environmental policies to improve the waters of the bay could not be identified in the evaluated cores.
KW - Contamination
KW - Pb isotopes
KW - Sediment pollution record
KW - Sedimentation rates
KW - Todos os Santos Bay
KW - Trace elements
UR - http://www.scopus.com/inward/record.url?scp=85027274274&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2017.07.053
DO - 10.1016/j.marpolbul.2017.07.053
M3 - Article
C2 - 28800910
AN - SCOPUS:85027274274
VL - 125
SP - 459
EP - 471
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
IS - 1-2
ER -