Cadmium
Mostrando 25-36 de 979 artigos, teses e dissertações.
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25. Minerals multi-element analysis and its relationship with geographical origin of artisanal Mexican goat cheeses
Abstract The objective of this study was to perform a profile of mineral elements and the relationship of those as markers of geographical origin of artisanal goat cheese from the State of Veracruz, Mexico. In fresh and mature goat cheeses the quantified elements were: heavy (aluminum, arsenic, cadmium, lead), major (calcium, potassium, sodium, magnesium), e
Food Sci. Technol. Publicado em: 09/05/2019
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26. Application of a Novel Ion-Imprinted Polymer to the Separation of Traces of CdII Ions in Natural Water: Optimization by Box-Behnken Design
This study describes the preparation of a novel ion-imprinted polymer (IIP) to apply pre-concentration of cadmium ions in water samples of the Pontal Bay in Ilhéus, Brazil. First, cadmium ion was complexed with 2-(2-thiazolylazo)-p-cresol (TAC). Subsequently, there was the polymerization using ethylene glycol dimethacrylate and methacrylic acid monomers alo
J. Braz. Chem. Soc.. Publicado em: 2019-04
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27. Avaliação química, ecotoxicológica e genotoxicológica de águas de cavas de mineração a céu aberto
RESUMO Lagos artificiais formados em áreas de mineração a céu aberto são unidades complexas e se constituem em passivos ambientais emergentes advindos da indústria da mineração. Embora estejam aumentando em número em várias partes do globo, são um problema ambiental recente e ainda pouco estudado, especialmente no tocante à qualidade e à toxicid
Eng. Sanit. Ambient.. Publicado em: 21/03/2019
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28. Evaluation of zinc removal and compressive strength of self-reducing pellets composed of Electric Arc Furnace Dust
Abstract The amount of Electric Arc Furnace Dust (EAFD) is continuously increasing in mini-mill steel plants. This dust is considered a hazardous waste because of the presence of elements like lead, cadmium and chromium. Among many different treatment processes for this issue, there is the possibility of returning the EAFD back to the Electric Arc Furnace. T
REM, Int. Eng. J.. Publicado em: 2019-03
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29. High concentrations of toxic metals in water consumed by the Maxakali indigenous community in Brazil
Resumo O povo Maxakali é a segunda maior população indígena aldeada no Estado de Minas Gerais, Brasil, tendo nas doenças infecciosas e parasitárias, sua principal causa de morte. Problemas com a qualidade da água consumida por essa população, somados à ausência dos serviços públicos de saneamento, agravam o risco de adoecimento por diversas pato
Rev. Ambient. Água. Publicado em: 11/02/2019
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30. AVALIAÇÃO ESPACIAL E SAZONAL DAS CONCENTRAÇÕES DE PARTÍCULAS TOTAIS EM SUSPENSÃO E ELEMENTOS METÁLICOS ASSOCIADOS NO AR DE UMA CIDADE DO SUDESTE BRASILEIRO
The present study evaluated the concentrations of Total Suspended Particles (TSP) and associated metals in three distinct regions of Ribeirão Preto city (Center City, Campus and Airport) in the dry and rainy seasons. There were no significant differences (p < 0.05) in TSP and metals concentrations between the sampling sites, except for Cu, Cr and Zn. Season
Quím. Nova. Publicado em: 2019-01
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31. Poincianella pluviosa as biomonitor of heavy metals in the municipality of Volta Redonda, RJ, Brazil
RESUMO Objetivou-se com o presente estudo determinar a concentração de metais pesados em cascas de árvores da espécie Poincianella pluviosa no município Volta Redonda, Rio de Janeiro. Foram coletadas cascas de oito árvores, com três repetições de cada, nos setores 1 (W), 2 (S), 3 (E) e 4 (N) do centro de Volta Redonda correspondente aos pontos carde
Rev. bras. eng. agríc. ambient.. Publicado em: 2019-01
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32. Synergy between cadmium and zinc in bean plants cultivated in multi contaminated soils
ABSTRACT. Agricultural species are subjected to a variety of biotic and abiotic stresses, which are the main limitations to crop production. In this context, contamination by trace elements is characterized as an abiotic stress that represents an environmental problem. Due to the physical and chemical similarities between cadmium and zinc, these elements may
Acta Sci., Agron.. Publicado em: 17/12/2018
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33. Levels of Chromium, Copper, Iron, Magnesium, Manganese, Selenium, Zinc, Cadmium, Lead and Aluminium of honey varieties produced in Turkey
Abstract Honey is a natural animal product. The elemental composition of honey varies greatly depending on the source of nectar, honeydew, pollen and environmental conditions. The aim of the present study was to determine the levels of chromium (Cr), copper (Cu), iron (Fe), magnesium (Mg), manganese (Mn), selenium (Se), zinc (Zn), cadmium (Cd), lead (Pb) and
Food Sci. Technol. Publicado em: 10/12/2018
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34. Cupriavidus necator strains: zinc and cadmium tolerance and bioaccumulation
ABSTRACT: Among soil microorganisms, the genus Cupriavidus has garnered particular scientific, economic and ecological interest because of its ability to fix nitrogen and tolerate high concentrations of metals. The aim of this study was to analyze four strains of Cupriavidus necator for their ability to tolerate and bioaccumulate cadmium and zinc. The tolera
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-12
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35. Heavy Metal Bioaccumulation in Enteromorpha intestinalis, (L.) Nees, a Macrophytic Algae: The Example of Kadin Creek (Western Anatolia)
ABSTRACT This study aims to specify the amount of ten heavy metals (Al, Cr, Mn, Ni, Cu, Zn, As, Cd, Hg, Pb) in water, sediment and Enteromorpha intestinalis samples gathered from Kadin Creek in seasonal periods in 2011 and 2012 and to reveal bioaccumulation capability of this macrophytic algae. In this regard, heavy metal concentrations in the gathered sampl
Braz. arch. biol. technol.. Publicado em: 29/10/2018
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36. Microstructural, thermochemistry and mechanical evaluation of self-reducing pellets using electric arc furnace (EAF) dust containing zinc for Waelz process
ABSTRACT The increment of recycling of steel using electric arc furnace and the tendency to coat of steel products with zinc, in order to prevent corrosion, has increased the proportion of galvanized scrap used worldwide in the recent years. Approximately 10 to 20 Kg/t of cast steel is generated in casting arcs. These collected dusts electric arc furnace (EA
Matéria (Rio J.). Publicado em: 19/07/2018