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Determinação de arsênio e cromo em insumos farmacêuticos contendo enxofre por espectrometria de absorção atômica com forno de grafite e análise direta de amostras sólidas
(Universidade Federal de Santa Maria, 2007-09-17)
In this work a procedure was developed using direct solid sampling (DSS) and graphite furnace atomic absorption spectrometry (GF AAS). The study was applied to the determination of As in hydrochlorothiazide and barium ...
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 ...
Emprego de multiatomizador de quartzo para a minimização de interferências e determinação de arsênio por HG AAS em antimoniais pentavalentes
(Universidade Federal de Santa Maria, 2008-03-06)
A systematic study was made to evaluate the interference of hydride forming elements in conventional quartz tube atomizers as well as to study the performance of
multiatomizer of quartz (MMQTA) for minimization of these ...