metal contamination
Environmental risk increase due to heavy metal contamination caused by a copper mining activity in Southern Brazil
... heavy metal contamination arising from mining activities, of fluvial waters in the CCM area, three aspects are emphasised in this ...the metal concentrations could be masked by natural sources, ...
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Evaluation of the use of Leptodactylus ocellatus (Anura: Leptodactylidae) frog tissues as bioindicator of metal contamination in Contas River, Northeastern Brazil
... In the analysis of the muscles it could be seen some differences in relation to the results found in the skin. The manganese concentrations in the muscles were lower than in the skin and viscera. Studies that have ...
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Metal contamination budget at the river basin scale: a critical analysis based on the Seine River
... fluxes (eg. River outputs T4, Fig. 1, Table 2) were averaged over the 1990–2000 period, to smooth the annual variation of river metal contamination (Gromaire et al., 2002; Grosbois et al, 2006; Meybeck et ...
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Trace Metal Contamination in Estuarine Fishes from Vitória Bay, ES, Brazil
... Temporal variations in trace metal concentrations are frequently attributed to the effects of seasonality. That the observed variation (Table 4) could be related to seasonal diet changes was out of the scope of ...
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Heavy Metal Contamination in Seafood and Consumer Exposure in the Gulf Cooperation Council
... These EWIs are important for the setting of recommendations for special groups like pregnant women and children living in the GCC. Regarding fish it is not so worrisome since fish consumption also has several benefits ...
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How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
... higher metal accumulations than did plants with higher ...external metal concentration may result in a dilution effect and thus a low internal metal ...
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Microplastic and metal contamination in Bermuda fishes at different trophic levels
... Marine pollution has attracted increasing attention from scientists and the public in recent years due to its impacts on marine life. Studies have focussed on presence of plastics and metal contaminants in both ...
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Metal contamination in Ria Formosa saltmarsh sediments and halophyte vegetation
... of metal ores, smelting operations, refining, electroplating and the manufacture of dyes, paints and ...trace metal concentrations often experience serious physiological, reproductive and development ...
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Chemical stressors in the Guadiana River
... revealed metal contamination, especially regarding lead, in water, sediments and fresh and marine organisms, indicating biological effects related to these stressors and revealing an impact of the acid mine ...
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J. Braz. Chem. Soc. vol.24 número1
... A total of 47 surface sediment samples was collected at four sampling campaigns in order to determine variations in the concentration of metals from 13 fishing points of the Billings Reservoir by a VanVeen sampler, ...
10
J. Braz. Chem. Soc. vol.22 número10
... that metal contamination is still a problem for the bent ecosystem of the Santos Estuarine ...System. Metal concentrations above limit levels of Canadian Sediment Quality Guidelines were ...
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Assessment of contamination in high consumption vegetables in Iran, Kermanshah
... in the incidence of human cancer [16, 17]. Considering public expectation to be assured of their diet integrity, control and monitoring of contamination is necessary. Various researchers in Iran have studied the ...
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Biomarkers in nereis diversicolor (Polychaeta: Nereididae) as management tools for environmental assessment on the southwest Iberian coast
... on metal contamination (Cd, Cu, Ni, Pb and Zn) in Nereis diversicolor whole ...to metal contamination with different biomarker responses showing a clear site trend, suggesting different ...
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Determination of trace metals in fruit juices selected by ASAE using atomic absorption spectroscopy
... the metal content reflects differences in soil composition where the fruits were grown as well as atmospheric conditions and agricultural practices during its growing ...of contamination in fruit juices are ...
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Chemical stressors in the Guadiana River
... revealed metal contamination, especially regarding lead, in water, sediments and fresh and marine organisms, indicating biological effects related to these stressors and revealing an impact of the acid mine ...
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Fabricação e Caracterização de Dispositivos Baseados em Nanofitas de Óxido de Estanho (SnO
... entre metal/semicondutor usualmente não apresentam uniformidade, porém quando o semicondutor possui as dimensões de uma nanofita, a desordem natural das superfícies auto-organizadas da amostra contribui ...
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Impact des opérations d'abattage dans les tueries traditionnelles sur la qualité bactériologique de la viande de volaille à Meknès (Maroc)
... de contamination des poulets s’avère très ...de contamination dite « Flore initiale », elle se trouve sur les plumes, sur la peau, sur les pattes et dans les intestins ...
7
Estudo e desenvolvimento de blocos para processamento hardwired em aparelhos de auxílio...
... O desenvolvimento da indústria de microeletrônica tem como possível desdobramento a melhoria da qualidade de vida daqueles que dela se beneficiam e sua evolução segue com a utilização de Circuitos Integrados (CI) com ...
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Circuito elétrico auxiliar para intubação das vias lacrimais.
... O aparelho permite que o cirurgião não apenas sinta o contato metal-metal mas faz com que saiba que o que está sendo manipulado com o gancho é o metal da sonda e não outras estruturas só[r] ...
3
Universidade Estadual do Rio de Janeiro Departamento de Química Geral e Inorgânica
... Podemos visualizar a formação de uma ligação iônica típica entre dois átomos hipotéticos, M (um metal) e X (um não-metal), da seguinte maneira: como M é um metal, sua ene[r] ...
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