邻菲罗啉分光光度法直接测定盐酸胍中微量铁

Spectrophotometric Determination of Micro Amount Iron in Guanidine Hydrochloride with 1,10-Phenanthroline

通过试验认为盐酸胍的存在对邻菲罗啉亚铁吸收曲线、吸光值稳定的pH范围、显色剂用量及有色物的稳定性等均无影响,并建立了邻菲罗啉分光光度法直接测定盐酸胍中微量铁含量的方法,当盐酸胍中铁的质量分数为5×10-6时,相对标准偏差为2%。

An analytical method,spectrophotometric determination of micro amount iron in guanidine hydrochloride with 1,10-phenanthroline,was established.When iron amount in the sample was 5×10-6,its relative standard deviation was 2%.It was proven that the relation curves between absorbance and wave length or acidity,1,10-phenanthroline,laid time were not affected by guanidine hydrochloride.