Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Eduardo Fausto de Almeida Neves"'
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
1. Em prosseguimento a pesquisas anteriores, procurou-se estudar as ainda pouco conhecidas propriedades complexantes do íon azoteto, com relação a diversos cátions, em solução aquosa, e, sempre que interessante, confrontá-las com as do íon ti
Autor:
Eduardo Fausto de Almeida Neves, Sue Wirick, Biqing Liang, Dawit Solomon, Johannes Lehmann, Karen Heymann
Publikováno v:
Geoderma. :163-169
Objectives Alkaline extracts from soils generate operationally-defined isolates that are referred to as “humic substances” but may not relate to a distinct molecular structure within the soil organic matter (SOM) matrix. This study examines wheth
Autor:
Ronaldo C. Faria, Eduardo Fausto de Almeida Neves, Paulo H. Pereira da Silva, Andrea Oliveira
Publikováno v:
Química Nova. 31:227-231
In potentiometric titrations of metal cations with EDTA the Hg/HgY2- system is usually used to detect the end point. However, the use of mercury has been discouraged in analytical procedures due to its toxicity. In this work the Cu/CuY2- system was u
Publikováno v:
Food Chemistry. 101:33-36
Cachaca is a distilled alcoholic beverage, produced in large quantities in Brazil, from fermentation of sugar cane juice. It is normally distillated in copper stills, which can sometimes cause contamination with this element, at toxic levels. An effi
Autor:
Dieter Klockow, Peter Jacob, Elen Romão Sartori, Eduardo Fausto de Almeida Neves, Débora Cassoli de Souza, Andréa Boldarini Couto
Publikováno v:
Analytical Letters. 39:2763-2774
The oxidation of iodide to iodine by nitrous acid in aqueous acidic medium takes place catalytically in the presence of dissolved oxygen and can be followed spectrophotometrically at 288 and 352 nm. An indirect molar absorptivity for nitrite on the b
Publikováno v:
Engenharia Sanitaria e Ambiental v.11 n.3 2006
Engenharia Sanitaria e Ambiental
Associação Brasileira de Engenharia Sanitária e Ambiental (ABES)
instacron:ABES
Engenharia Sanitaria e Ambiental, Volume: 11, Issue: 3, Pages: 260-268, Published: SEP 2006
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Engenharia Sanitaria e Ambiental
Associação Brasileira de Engenharia Sanitária e Ambiental (ABES)
instacron:ABES
Engenharia Sanitaria e Ambiental, Volume: 11, Issue: 3, Pages: 260-268, Published: SEP 2006
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
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Publikováno v:
Engenharia Sanitaria e Ambiental, Vol 11, Iss 3, Pp 260-268 (2006)
O reagente de Fenton foi empregado como agente coagulante no tratamento de água com cor verdadeira elevada (100 ± 5 uH) causada pela introdução de substâncias húmicas extraídas de turfa, empregando-se a flotação por ar dissolvido. Otimizou-s
Publikováno v:
Analytical Letters. 39:927-935
A copper sulfate (Cu2S) film is formed on the surface of a copper wire by immersion in melted (>55°C) sodium thiosulfate, Na2S2O3·5H2O. This Cu2S/Cu electrode is sensitive to sulfide ions and can be used in potentiometric titration of Na2S solution
Autor:
Marciela Scarpellini, Eduardo Fausto de Almeida Neves, Eduardo E. Castellano, Douglas Wagner Franco, Ademir Neves
Publikováno v:
Polyhedron. 23:511-518
The new copper(II)–nitrite complex [CuII(L)(ONO)]ClO4 (2), L=[(bis(1-methylimidazol-2-yl)methyl)(2-(pyridyl-2-yl)ethyl)amine] was synthesized and characterized by cyclic voltammetry, UV–Vis spectroscopy, X-band EPR and X-ray crystallography. Comp
Autor:
Carla Cristina Schmitt Cavalheiro, Eduardo Fausto de Almeida Neves, Marcos F.S. Teixeira, Luiz Antônio Ramos
Publikováno v:
Applied Clay Science. 23:323-328
The construction and analytical evaluation of a pH sensor based in a matrix containing 20% of [(Mg6Si8O20)](OH)4, a magnesium silicate, talc and 30% graphite dispersed in an epoxy resin (50%) is described. The data obtained from various acid–base t