Encontrados 4 documentos, a visualizar página 1 de 1
Long-term monitoring of a mercury contaminated estuary (Ria de Aveiro, Portugal...
Coelho, J. P.; Pato, P.; Henriques, B.; Picado, A.; Lillebo, A. I.; Dias, J. M.; Duarte, A. C.; Pereira, M. E.; Pardal, M. A.The main aim of this research was to assess the mercury transport from an estuarine basin with a background of anthropogenic contamination during a spring tidal cycle (year 2009) and compare it with two previous tidal cycles (years 1994 and 1999), as part of a long-term monitoring program. Results showed that effective mercury transport occurs both in the dissolved and particulate fractions (0.18 and 0.20 kg pe...
Uptake and depuration of PCB-153 in edible shrimp Palaemonetes varians and huma...
Grilo, T. F.; Cardoso, P. G.; Pato, P.; Duarte, A. C.; Pardal, M. A.A medium-term mesocosm exposure study was conducted to elucidate bioaccumulation and depuration of polychlorinated biphenyl congener 153 (PCB-153) in edible shrimp Palaemonetes varians. Over the 15-day exposure period, shrimp under different exposure concentrations exhibited a significant increase in PCB153 concentration compared with control organisms. Distinct bioaccumulation patterns and uptake rates ...
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...
Accumulation versus remobilization of mercury in sediments of a contaminated la...
Ramalhosa, Elsa; Pato, P.; Monterroso, Paulo; Pereira, Eduarda; Vale, Carlos; Duarte, A.C.http://apps.isiknowledge.com/full_record.do?product=UA&search_mode=GeneralSearch&qid=12&SID=V12mKh9k9n8jHN@CK7o&page=1&doc=2&colname=WOS ; This work discusses the extent of sediment mercury retention in the most contaminated sites in the lagoon, and its exportation to the water column as well as transfer to biogenic suspended particles and to sea bass (Dicentrarchus labrax). Therefore,the main question, with i...
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