研究了间接原子吸收定量测定菜籽粕中植酸含量的方法。采用三氯乙酸提取植酸 ,添加三氯化铁 ,使其生成植酸铁沉淀 ,用原子吸收法测定上清液中剩余铁的含量 ,推算植酸沉淀铁的量 ,以定磷法得出的植酸含量为比较基准 ,结果表明植酸与铁离子 (Fe3+)以 6.0∶1的比例络合 ,根据这一比例关系 ,测出试样中植酸沉淀Fe3+的含量 ,即可求算样品中植酸的含量。 The method of indirect atomic absorption quantitative determination of phytic acid in rapeseed meal was studied. Trichloroacetic acid was used to extract phytic acid, ferric chloride was added to produce ferric phytate precipitation, and the content of iron in supernatant was determined by atomic absorption spectrometry to calculate the amount of phytate precipitated iron Of the phytic acid content as a baseline, the results show that phytic acid and iron ions (Fe3 +) 6.0: 1 complex ratio, according to this ratio, the sample was measured phytic acid precipitation Fe3 + content, you can calculate the sample Phytic acid content.