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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 ...
Desenvolvimento de procedimentos alternativos de preparo e de determinação de metais pesados em fármacos tricíclicos
(Universidade Federal de Santa Maria, 2007-08-24)
In this work, sample preparation and determination methods described in pharmacopeias were evaluated and alternative methods using sample decomposition in closed vessels and determination by atomic spectrometrometry were ...
Desenvolvimento e validação de método multirresíduo empregando GC-MS (NCI-SIM) para determinação de pesticidas em grãos de trigo e seus produtos processados
(Universidade Federal de Santa Maria, 2008-03-07)
In this study a multiresidue method for the determination of 24 pesticides in wheat, flour, bran and bread using GC-MS (NCI-SIM) mode was developed and validated. The objective of this study was to evaluate the pesticides ...
Desenvolvimento e avaliação de sistema em fluxo para especiação de mercúrio
(Universidade Federal de Santa Maria, 2007-01-29)
A flow injection (FI) system, which is coupled to an atomic absorption spectrometer, is proposed for organic and inorganic mercury speciation. The FI system consists basically of three three way-solenoid valves, a gas/liquid ...
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 ...
Determinação de elementos traços em carbeto de boro de alta pureza por SS-GFAAS e comparação estatística com resultados de diferentes procedimentos de decomposição
(Universidade Federal de Santa Maria, 2008-02-18)
In this work a procedure is proposed for determination of Al, Cr, Cu, Mg, Mn and Ni in boron carbide samples by solid sampling graphite furnace atomic absorption spectrometry (SS-GFAAS). The samples, ESK and PL360, ...
Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
(Universidade Federal de Santa Maria, 2018-08-29)
In the present work, two methods of determination of rare earth elements by high resolution continuum source flame AAS was developed, being a sequential and a simultaneous method. The sequential method allowed the determination ...
Determinação multiclasse de resíduos de medicamentos veterinários em músculo ovino por HPLC-FD e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2015-02-27)
The application of good livestock practices in the sheep industry is a growing concern on food security due to the increase of financial transactions in this sector in Brazil, mainly due to imports. To perform the monitoring ...
Determinação multirresíduo de agrotóxicos em água empregando microextração líquido-líquido dispersiva (DLLME) e GC-MS/MS
(Universidade Federal de Santa Maria, 2015-06-19)
The use of pesticides is related to effectiveness in pest control, as well as productivity
in food production in agriculture. However, the use of these substances in high
amounts is directly affecting water resources, ...
Determinação simultânea de Al(III) e Fe(III) em fluidos pós-hemodiálise empregando espectrofotometria e métodos de calibração multivariada
(Universidade Federal de Santa Maria, 2005-12-16)
This work aimed to explore the association of molecular absorption spectrometry with multivariate calibration techniques to the simultaneous determination of Al(III) and Fe(III) in post-dialysis fluids, from the complexes ...