ISO 6685:1982 工业用化学制品.测定铁含量的一般方法.1,10-菲罗啉分光光度计法

标准编号：ISO 6685:1982

中文名称：工业用化学制品.测定铁含量的一般方法.1,10-菲罗啉分光光度计法

英文名称：Chemical products for industrial use — General method for determination of iron content — 1,10-Phenanthroline spectrophotometric method

发布日期：1982-07

标准范围

用抗坏血酸将试验溶液中的所有铁（III）还原为铁（II）。在pH值介于2和9之间时，添加1,10-菲罗啉。在最大吸收波长（510 nm）下测量形成的橙红色络合物的吸光度。该方法适用于试验溶液，可从该溶液中提取含有10至500 g Fe（体积不超过60 m）的小份溶液。附录中给出了某些干扰的详细信息以及克服干扰的方法。

All the iron(III) present in the test solution is reduced to iron(II) with ascorbic acid. At a pH between 2 and 9 1,10-phenanthroline is added. the measurement of the absorbance of the orange-red complex formed is carried out at the wavelength of maximum absorption (510 nm). The method is applicable to test solutions from which an aliquot portion can be taken containing between 10 and 500 g of Fe in a volume of not more than 60 m. Details of certain interferences and means by which they can be overcome are given in an annex.

标准预览图