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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 ...
Determinação de espécies de arsênio por LC-ICP-MS
(Universidade Federal de Santa Maria, 2006-07-28)
The development of a method for As speciation in aqueous by-product of pyrolysis process of foliate bituminous is described in the present work. Arsenic species are separated by liquid chromatography (LC) coupled to ...
Degradação de nonilfenol polietoxilado e de efluente têxtil por meio de eletrocoagulação e processos Fenton
(Universidade Federal de Santa Maria, 2004-07-29)
Nonylphenol polyethoxylates are nonionic surfactants widely
employed on textile industry. Submitted to inadequate effluent treatment processes, these compounds can be eventually biodegraded to metabolites with estrogenic ...
Determinação de cloreto por cromatografia de íons em petróleo extrapesado, coque e resíduo de vácuo após decomposição em sistema fechado por combustão iniciada por microondas
(Universidade Federal de Santa Maria, 2007-07-27)
A method for chloride determination in heavy crude oil, petroleum coke and vacuum residue after microwave-induced combustion (MIC) in closed vessels is described. Samples (with exception of petroleum coke) were wrapped ...
Determinação do número de acidez total em resíduo de destilação atmosférica e de vácuo do petróleo empregando a espectroscopia no infravermelho (ATR-FTIR) e calibração multivariada
(Universidade Federal de Santa Maria, 2007-12-14)
The crude oil might contain a series of contaminants that can to produce undesired properties. Naphthenic acids (NA), for example, perhaps promotes corrosion in refineries. The determination of total acid number (TAN) in ...
Decomposição de elastômeros por combustão iniciada por microondas em sistema fechado
(Universidade Federal de Santa Maria, 2006-07-28)
A rapid digestion procedure for further determination of inorganic elements in carbon black-containing elastomers has been developed using sample combustion in closed quartz vessels with oxygen pressure. Microwave radiation ...