Coprecipitative preconcentration of Cr(III), Pb(II), Zn(II), Cd(II) and Mn(II) Ions with Al(III) and Fe(III) carriers and chromotrope 2B reagent and their FAAS determination in various water and food samples
Abstract:Métodos de coprecipitação utilizando Al(III) e Fe(III) como elementos carregadores e cromotropo 2B como agente co-precipitante foram descritos para a preconcentração dos íons Cr(III), Pb(II), Zn(II), Cd(II) e Mn(II). A morfologia da superfície dos coprecipitantes foi avaliada por microscopia eletrônica de varredura (SEM). As condições ideais para ambos os métodos de coprecipitação, tais como pH da solução, quantidades de carregadores e reagente, volume da amostra e efeito de íons interferentes, foram investiga… Show more
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