Elements Potentially Toxic
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. DETERMINATION OF TOTAL AND BIOACCESSIBLE ELEMENTS IN TEMPORARY ADHESIVE TATTOOS USED BY CHILDREN AND ADULTS
The presence of bioaccessible potentially-toxic elements in five different brands of temporary tattoos (packaged with bubble gums) aimed at children and three product brands used by young and adult audiences were analyzed in accordance with the Brazilian Organization of Technical Standards (ABNT) and International Organization for Standardization (ISO) for t
Química Nova. Publicado em: 2022
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2. Concentrations of major and trace elements in the soils, edible parts of crops and urine of farmers in agroecological communities
ABSTRACT. The relationship between soil and health is important for populations that depend on the local environment to meet their nutritional needs. This study aimed to evaluate the concentrations of major and trace elements in the soils, edible parts of crops and urine of farmers in agroecological communities. We collected samples of soil, edible parts of
Acta Sci., Agron.. Publicado em: 28/03/2019
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3. Mineralogy and Concentration of Potentially Toxic Elements in Soils of the São Francisco Sedimentary Basin
ABSTRACT Lithological and geomorphological variations determine formation of soils with different mineralogical constitutions and can influence the distribution of potentially toxic elements (PTE). The aim of this study was to determine the contents of PTE and mineralogical assemblages along soil profiles of different classes and parent materials and to inve
Rev. Bras. Ciênc. Solo. Publicado em: 24/05/2018
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4. Plant growth, nutrients and potentially toxic elements in leaves of yerba mate clones in response to phosphorus in acid soils
ABSTRACT Native to subtropical region of South America, yerba mate is responsive to P under some conditions, but the degree of influence of genetic and soil on the growth and composition of the leaf is unknown. The aim of study was to evaluate plant growth, nutrients and potentially toxic elements in leaves of yerba mate clones in response to P application i
An. Acad. Bras. Ciênc.. Publicado em: 2018-03
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5. Contamination and Soil Biological Properties in the Serra Pelada Mine - Amazonia, Brazil
ABSTRACT Discovered in 1980 and unleashed an utter gold rush of the modern era, Serra Pelada was the largest open-air mine in Brazil. About 80,000 gold prospectors worked there until 1984, when the gold pits were flooded. The environmental impact caused by mining inflicted irreversible damage to the ecosystem, with the formation of a large lake and piles of
Rev. Bras. Ciênc. Solo. Publicado em: 15/02/2018
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6. Determination of Essential, Non-Essential, and Potentially Toxic Elements in Graviola (Annona muricata L.) Pulp by ICP OES and GF AAS
The determination of essential (B, Ca, Co, Cu, Cr, Fe, K, Li, Mg, Mn, P, S, Se, Si, V, and Zn), non-essential (Al, Ba, Sn, Sr, and Ti), and potentially toxic (As, Cd, and Pb) elements in graviola pulp by inductively coupled plasma optical emission spectrometry (ICP OES) and graphite furnace atomic absorption spectrometry (GF AAS) is proposed. Samples were di
J. Braz. Chem. Soc.. Publicado em: 2015-10
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7. Reconstruction of historical trends in potentially toxic elements from sediment cores collected in Bertioga channel, southeastern Brazil
Este estudo apresenta uma avaliação da deposição de elementos potencialmente tóxicos no Canal de Bertioga (costa sudeste brasileira) ao longo de 150 anos, período principal de atividade antropogênica na área. O trabalho analisou cinco testemunhos sedimentares por meio de ICP-OES para determinar os níveis de metais (Cd, Cr, Cu, Ni, Pb e Zn) e As. O �
Braz. j. oceanogr.. Publicado em: 2013-06
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8. Análise exploratória rápida e não destrutiva (screening) da presença de elementos químicos tóxicos em material escolar por fluorescência de raios x
Compulsory in Brazil, toy certification aims to prevent possible risks in toy use. The Brazilian National Institute of Metrology (INMETRO) establishes the maximum concentration of toxic elements (TE) that may be present in toys. This study evaluates the presence of TE in different crayons, gouache and modeling clays using X-ray fluorescence. This technique i
Quím. Nova. Publicado em: 2013
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9. Stabilization of electric-arc furnace dust in concrete
Electric-arc furnace dust (EAFD) is a by-product of steel production and recycling. This fine-grained material contains high amounts of zinc and iron as well as significant amounts of potentially toxic elements such as lead, cadmium and chromium. Therefore, the treatment and stabilization of this industrial residue is necessary. Concrete is a well-known suit
Materials Research. Publicado em: 2010-12
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10. Fracionamento de Ba, Cr, Cu, Ni e Zn em solos tratados com lodo de esgoto em experimentos de longa duração
As the agronomic importance of the provision of agricultural sewage sludge, and its growing concerning environmental point of view, in this work decomposition procedures of soil samples subjected to the addition of sewage sludge were evaluated for total content determination of Ba, Cd, Cr, Cu, Ni, Pb and Zn; the contents of the aforementioned elements presen
Publicado em: 2010
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11. Determinação da concentração de elementos químicos potencialmente tóxicos em aerossóis presentes no interior de uma pequena indústria de fundição de metais, utilizando amostrador temporal e a técnica de fluorescência de raios X / Toxic inorganic elements content in suspended particulate matter inside a small foundry plant by streaker sampler and energy dispersive X-ray fluorescence technique
The aim of this work was to evaluate the chemical concentration of some potentially toxic inorganic chemical elements and the time profiles in fine (PM2.5, particles up to 2.5 m) and coarse (PM2.5-10, particles from 2.5 to 10 m) suspended particulate matter (SPM) inside a small foundry plant - bronze, iron and aluminium -, in which at high concentrations tur
Publicado em: 2009
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12. Adsorção individual e competitiva de Cd, Cu, Ni e Zn em solos em função da variação de pH / Individual and competitive adsorption of Cd, Cu, Ni and Zn in soils as a function of pH variation
The disposal of solid waste or the application of pesticides and fertilizers may increase the concentration of potentially toxic elements, especially heavy metals, in soil and in groundwater. As the soil has been considered a potential deposit for the provision of such wastes, it is important to know the mechanisms of retention and transport of these element
Publicado em: 2009