Abstract:RESUMOO presente trabalho relata os estudos desenvolvidos sobre alguns aspectos do método volumétrico de determinação do boro, solúvel em ácido, em fertilizantes. Foram objeto de estudos a influência dos ions amônio e fosfato e suas consequentes eliminações, a possibilidade da redução da massa de manitol necessária para a titulação, face a mudança do pH do ponto final e a precisão e a exatidão do método.Os resultados permitiram estabelecer que 6,0 g de manitol são suficientes para a referida determinação pelo … Show more
“…In using AOAC official methods of analysis, 1970, Alcarde et al (3) reported that only 6 g of mannitol were sufficient to measure B in fertilizers. The NH4+ ion interference was eliminated by boiling the alkaline solution for 30 min.…”
“…In using AOAC official methods of analysis, 1970, Alcarde et al (3) reported that only 6 g of mannitol were sufficient to measure B in fertilizers. The NH4+ ion interference was eliminated by boiling the alkaline solution for 30 min.…”
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