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Decomposição de carvão com elevado teor de cinzas para determinação simultânea de As, Cd, Hg, Pb e S por ICP-OES
(Universidade Federal de Santa Maria, 2015-09-21)
In this work, sample preparation methods for decomposition of coal with high ash content (14-
54%) for further simultaneous determination of As, Cd, Hg, Pb and S by inductively coupled
plasma optical emission spectrometry ...
Determinação de impurezas inorgânicas em suplementos de ferro por DSS-GF AAS
(Universidade Federal de Santa Maria, 2010-01-18)
In this work a methodology for determination of inorganic impurities (Ag, As, Cr, Mn, Ni, Pb e Sb) by direct solid sampling with graphite furnace atomic absorption spectrometry (DSS-GF AAS) in iron glycinate chelate samples ...
Determinação de mercúrio orgânico e inorgânico por CVG-GF AAS em tecido muscular de peixe após extração seletiva
(Universidade Federal de Santa Maria, 2005-05-06)
In this study a procedure for speciation analysis of Hg in muscle fish tissue was developed with us of selective extraction and determination of each species by chemical vapor generation with graphite furnace atomic ...
Avaliação de diferentes sistemas de extração assistida por ultrassom para determinação de As, Cd, Cr, Ni e Pb em solo e sedimento
(Universidade Federal de Santa Maria, 2016-03-10)
In this study a sample preparation method using ultrasound-assisted extraction (UAE) for further determination of As, Cd, Cr, Ni and Pb in soil and sediment by inductively coupled plasma mass spectrometry (ICP-MS) was ...
Desenvolvimento de metodologias para a especiação de arsênio em águas e matrize salinas empregando voltametria adsortiva de redissolução catódica
(Universidade Federal de Santa Maria, 2005-01-20)
The present work reports the development of methodologies for the arsenic speciation in waters and saline matrices by adsorptive cathodic stripping voltammetry (AdCSV). The determination of As(III) by AdCSV was investigated ...
Determinação de pesticidas e compostos relacionados em água de superfície e efluente industrial empregando extração em fase sólida e cromatografia gasosa acoplada à espectrometria de massas
(Universidade Federal de Santa Maria, 2004-08-20)
To assist the growing nutritious demand, caused by the great population increase, the use of pesticides has been intensified in the agriculture. Such products improve the agricultural productivity and could reduce the food ...
Desenvolvimento de sistema para piroidrólise para o preparo de papelão hidráulico visando a determinação de halogênios
(Universidade Federal de Santa Maria, 2014-08-14)
A pyrohydrolysis system was developed for sample preparation for halogen
determination in hydraulic cardboard. These materials are used for sealings,
mainly engines and nuclear reactors. Because of the contact of the ...
Validação de procedimento analítico empregando SPE e GC-ECD para determinação de pesticidas organoclorados em água e avaliação da permeabilidade destes nos dialisadores utilizados em hemodiálise
(Universidade Federal de Santa Maria, 2004-08-27)
The dialysis of the blood, within which the most applied modality is the haemodialysis, is a method thoroughly used for the treatment of the renal inadequacy. With this treatment, toxic substances accumulated in the patient´s ...
Ferro-processos aplicados à degradação de efluente da produção de trifluralina
(Universidade Federal de Santa Maria, 2002-08-02)
In this work, comparative studies about the performance of iron-processes were
carried out in the pre-treatment of effluent streams samples (under high
concentration) from the trifluralin herbicide production (amination ...
Estudo da interação entre silício e alumínio extraídos do vidro na presença de soluções para nutrição parenteral
(Universidade Federal de Santa Maria, 2003-08)
Silicon is a non-metal essential to the living organisms due to its role
in the tissues and bones. The most important biological forms of silicon are
the amorphous silica and the monomeric silicic acid. Only the ...