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- W2072783237 abstract "As part of the “TAGUBAR” (TAngential GUanabara Bay Aeration Recovery) project, surface and long core sediments of the Guanabara Bay (Rio de Janeiro, Brazil) were investigated for mercury (Hg). The main, but not the only, input of Hg into the Bay's waters is known to be a Chlor-Alkali Plant (CAP) located in the Acarì-São João de Merití River system, on the northwestern side of the Bay. Mercury distribution in surface sediments (<0.1–3.22 mg kg−1, average 0.87±0.80, n=40) seems to be controlled by the organic component, along with sulfur rather than grain-size, where Hg concentrations are less than 1 mg kg−1. Conversely, where the metal contents are higher than 1 mg kg−1, accumulation in surface sediments is mostly related to the presence of nearby contamination sources, such as industrial and urban settlements in the western sector of the Bay. Although total Hg contents in surface sediments exceed the values suggested by the effects-based standard quality guidelines as potentially toxic for the benthic community, results from a sequential extraction procedure showed that the contribution of the more soluble, easily exchangeable and eventually bioavailable Hg phases was found almost negligible (<0.1%). Most of the metal is strongly bound to the mineral lattice of the sedimentary matrix and should therefore be considered almost immobilized. The reduction in Hg accumulation in bottom sediments, expected as a consequence of the adoption of contamination control policies (i.e. Hg-free technologies in the CAP and sewage treating facilities), has not been clearly observed in the core profiles. Current estimates of Hg accumulation rates at the core top range from approximately 1 to 18 mg m−2 yr−1. Pre-industrial bottom core samples indicate that the central and northeastern sectors of the Bay are strongly affected by Hg enrichment: concentrations exceed the estimated baseline concentration by up to 20 factors. A cumulative Hg inventory suggests that the metal content has increased with the same order of magnitude in the vicinity of potential contamination sources on the western side of the Bay, but at a different rate; this is apparently determined by local conditions. A natural attenuation of Hg concentrations to background levels is not predictable in the near future." @default.
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- W2072783237 date "2012-03-01" @default.
- W2072783237 modified "2023-09-27" @default.
- W2072783237 title "Spatial variation, speciation and sedimentary records of mercury in the Guanabara Bay (Rio de Janeiro, Brazil)" @default.
- W2072783237 cites W1562892533 @default.
- W2072783237 cites W1968026436 @default.
- W2072783237 cites W1971384261 @default.
- W2072783237 cites W1973457577 @default.
- W2072783237 cites W1978314021 @default.
- W2072783237 cites W1981549237 @default.
- W2072783237 cites W1982111684 @default.
- W2072783237 cites W1984589961 @default.
- W2072783237 cites W1984615056 @default.
- W2072783237 cites W1987369118 @default.
- W2072783237 cites W1989771895 @default.
- W2072783237 cites W1994336434 @default.
- W2072783237 cites W1999036884 @default.
- W2072783237 cites W2004529964 @default.
- W2072783237 cites W2006318024 @default.
- W2072783237 cites W2008472450 @default.
- W2072783237 cites W2009831348 @default.
- W2072783237 cites W2011506162 @default.
- W2072783237 cites W2013966796 @default.
- W2072783237 cites W2015438774 @default.
- W2072783237 cites W2019532678 @default.
- W2072783237 cites W2019813700 @default.
- W2072783237 cites W2025703665 @default.
- W2072783237 cites W2031419236 @default.
- W2072783237 cites W2036403893 @default.
- W2072783237 cites W2038286720 @default.
- W2072783237 cites W2045565792 @default.
- W2072783237 cites W2049288368 @default.
- W2072783237 cites W2049621326 @default.
- W2072783237 cites W2052997188 @default.
- W2072783237 cites W2054160444 @default.
- W2072783237 cites W2057808966 @default.
- W2072783237 cites W2059594158 @default.
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- W2072783237 cites W2064216716 @default.
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- W2072783237 cites W2068082427 @default.
- W2072783237 cites W2068803340 @default.
- W2072783237 cites W2074112049 @default.
- W2072783237 cites W2077476606 @default.
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- W2072783237 cites W2088663252 @default.
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- W2072783237 cites W2094065181 @default.
- W2072783237 cites W2098763372 @default.
- W2072783237 cites W2100673756 @default.
- W2072783237 cites W2101254930 @default.
- W2072783237 cites W2108677377 @default.
- W2072783237 cites W2130750106 @default.
- W2072783237 cites W2145678161 @default.
- W2072783237 cites W2145726293 @default.
- W2072783237 cites W2150225599 @default.
- W2072783237 cites W2153295195 @default.
- W2072783237 cites W2158596535 @default.
- W2072783237 cites W2158639809 @default.
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- W2072783237 cites W2170707850 @default.
- W2072783237 cites W2228547488 @default.
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- W2072783237 cites W4238926178 @default.
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- W2072783237 doi "https://doi.org/10.1016/j.csr.2011.12.003" @default.
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