Encontrados 8 documentos, a visualizar página 1 de 1
Mercury intracellular partitioning and chelation in a salt marsh plant, Halimio...
Válega, M.; Lima, A. I. G.; Figueira, E. M. A. P.; Pereira, E.; Pardal, M. A.; Duarte, A. C.http://www.sciencedirect.com/science/article/B6V74-4TWSWGV-2/2/fb5d4dd5d0727ea28abf40212d114131
Mercury mobility in a salt marsh colonised by Halimione portulacoides
Válega, M.; Lillebø, A. I.; Caçador, I.; Pereira, M. E.; Duarte, A. C.; Pardal, M. A.The present study intends to increase the knowledge on the mobility of mercury in a salt marsh colonised by Halimione portulacoides. Mercury distribution in the sediment layers and its incorporation into the plant biomass were assessed, as well as the potential export of mercury from the contaminated area to the adjacent environment. Mercury pools in the sediments ranged from 560 to 943 mg m-2 and are largely a...
Long-term effects of mercury in a salt marsh: Hysteresis in the distribution of...
Válega, M.; Lillebø, A. I.; Pereira, M. E.; Duarte, A. C.; Pardal, M. A.During four decades, the Ria de Aveiro was subjected to the loading of mercury from a chlor-alkali industry, resulting in the deposition of several tons of mercury in the sediments. The present study evaluates the impact of this disturbance and the recovery processes, temporally and spatially, by means of examining the richness of the species of salt marsh plants and mercury concentrations in sediments over the...
Assessment of methylmercury production in a temperate salt marsh (Ria de Aveiro...
Válega, M.; Lillebø, A. I.; Pereira, M. E.; Corns, W. T.; Stockwell, P. B.; Duarte, A. C.; Pardal, M. A.http://www.sciencedirect.com/science/article/B6V6N-4R718RP-2/1/3b5a21889355817d215071a3a8033fbc
Mercury in salt marshes ecosystems: Halimione portulacoides as biomonitor
Válega, M.; Lillebø, A. I.; Pereira, M. E.; Caçador, I.; Duarte, A. C.; Pardal, M. A.http://www.sciencedirect.com/science/article/B6V74-4TFV904-1/2/e4e4acaa50b773a40436188282a1f9e9
Mercury pollution in Ria de Aveiro (Portugal): a review of the system assessment
Pereira, M. E.; Lillebø, A. I.; Pato, P.; Válega, M.; Coelho, J. P.; Lopes, C. B.; Rodrigues, S.; Cachada, A.; Otero, M.; Pardal, M. A.; Duarte, A. C.The Ria de Aveiro (Portugal) is a coast al lagoon adjacent to the Atlantic Ocean and it has an inner bay (Laranjo bay) that received a highly contaminated effluent discharged by a mercury cell chlor-alkali plant from the 1950s until 1994. The aim of this study is to review in a holistic way several research studies that have been carried out in the Ria de Aveiro, in order to evaluate the remobilization of the m...
Distribution of mercury in the upper sediments from a polluted area (Ria de Ave...
Ramalhosa, Elsa; Pereira, Eduarda; Vale, Carlos; Válega, M.; Duarte, A.C.This work reports levels of Hg, Fe and Mn and sulphides in the upper sediments of the Laranjo Basin, and examines the influence of these elements on the distribution of mercury.
Mercury distribution in Douro estuary (Portugal)
Ramalhosa, Elsa; Pereira, Eduarda; Vale, Carlos; Válega, M.; Monterroso, Paulo; Duarte, A.C.Determinations ofdissolved reactive and total dissolved mercury, particulate and sedimentary mercury, dissolved organic carbon (DOC), particulate organic carbon (POC) and suspended particulate matter (SPM) have been made in the estuary ofriver Douro, in northern Portugal. The estuary was stratified by salinity along most ofits length, it had low concentrations of SPM, typically <20 mg dm-3, and concentrations o...
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