The present invention addresses the problem of providing a chelate color former which can measure the concentration of iron with high sensitivity and with low blank values when measuring the concentration of iron, and an iron concentration measurement method and kit that use this chelate color former. The present invention relates to: a compound represented by following formula [1] or a salt thereof
wherein, R1 and R2 each independently represent -SO3H or -CO2H; an iron concentration measurement method in which the compound is used as a chelate color former, the compound is brought into contact with iron in a sample, and the concentration of iron in the sample is measured on the basis of the degree of resulting color development; and a kit to be used therein.
本发明要解决的问题是提供一种在测量
铁浓度时灵敏度高且空白值低的螯合
显色剂,以及使用该螯合
显色剂的
铁浓度测量方法和试剂盒。本发明涉及:由下式[1]代表的化合物或其盐类
其中,R1 和 R2 各自独立地代表-SO3H 或-CO2H;一种
铁浓度测量方法,其中该化合物被用作螯合
显色剂,该化合物与样品中的
铁接触,并根据所产生的显色程度测量样品中的
铁浓度;以及用于其中的试剂盒。