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Desenvolvimento de métodos de preparo de amostras de erva-mate para a posterior determinação de As, Cd e Pb por GF AAS e ICP-MS
(Universidade Federal de Santa Maria, 2016-08-04)
In this work, the following methods for yerba mate digestion/extraction for further determination of As, Cd and Pb by graphite furnace atomic absorption spectrometry (GF AAS) and/or inductively coupled plasma mass spectrometry ...
Influência de modificadores orgânicos na determinação de chumbo em amostras de suplementos de cálcio por GF AAS
(Universidade Federal de Santa Maria, 2004-03-04)
The main goal of this study was to evaluate the effect of organic modifiers in the determination of lead in calcium supplement samples by graphite furnace atomic absorption spectrometry (GF AAS). Samples of refined calcium ...
Estudo da influência de modificadores químicos para a determinação de chumbo por GF AAS na presença de sulfatos
(Universidade Federal de Santa Maria, 2005-03-03)
Lead determination by graphite furnace atomic absorption spectrometry may be affected by some interferences. Several authors have reported that lead determination may be affected in the presence of some salts (carbonates ...
Combustão iniciada por microondas e determinação em linha de cádmio e chumbo em plantas por espectrometria de absorção atômica com tubo aquecido na chama
(Universidade Federal de Santa Maria, 2007-02-07)
In this work a new procedure is proposed by solid sampling flame furnace atomic absorption spectrometry after microwave induced combustion (MIC-FFAAS). The procedure was applied for the determination of cadmium and lead ...
Pré-tratamento das vitaminas B1, B2, B3, B6 , BB12 e C para a determinação de cádmio e chumbo por voltametria de redissolução anódica
(Universidade Federal de Santa Maria, 2005-07-25)
The present work approaches pretreatment steps for the determination of
cadmium and lead, as contaminants, in water soluble vitamins of samples, vitamins B1,
BB2, B3, B6, B12, and C, for anodic stripping voltammetry ...