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一、基本原理;铁的测定基于磺基水杨酸与铁有特效反应,生成紫红色络合物,色泽的深浅与铁的含量成正比,并且符合比尔定律。铝的测定基于在一定的酸度下与EbTA络合,再用氟化铵解离铝与EbTA,再用标准锌溶液与解离出的EbTA络合,从而求出铝的百分含量。二、仪器与试剂:仪器:72型分光光度计,510毫微米的波长,1公分比色皿,以溶液为空白进行比色。试剂:1.1:3的硝酸溶液。
First, the basic principles; determination of iron based on sulfosalicylic acid and iron have special effects reaction, generating purple complex, the color depth and iron content is proportional to, and in line with Bill’s law. The determination of aluminum was based on the complexation of EbTA with a certain acidity followed by the dissociation of aluminum and EbTA with ammonium fluoride followed by complexation with dissociated EbTA using a standard zinc solution to determine the percentage of aluminum. Second, equipment and reagents: Instrument: 72 spectrophotometer, 510 nm wavelength, 1 cm cuvette, the solution was blank for colorimetric. Reagents: 1.1: 3 nitric acid solution.