实验发现羟乙基二茂铁和二茂铁相似都具有还原能力,而且引入一个亲水基团使其水溶性大大增加。在HCI介质中,少量乙醇存在下,试剂很快和Fe~(3+)反应形成阳离子,溶于水呈纯蓝色。已用于铁矿中总铁的示差分光光度法测定,在λmax=640nm处,2mg Fe~(3+)/25ml为参比液,AC在0～1mgFe~(3+)/25ml范围内符合比尔定律。样品以HCl:HNO_3=3:1溶解,矿石中的Fe(II)部分完全氧化,以Fe~(3+)形式测总铁,结果满意。对于含Fe40～47％的样品,标准偏差为0.18％。 Hydroxylethylferrocene and ferrocene have been found to be similar in reducing power, and the introduction of a hydrophilic group greatly increases their water solubility. In HCI medium, a small amount of ethanol, the reagent quickly and Fe ~ (3 +) reaction to form a cation, soluble in water was pure blue. Has been used for the determination of total iron in iron ore by differential spectrophotometry, with 2 mg Fe3 + / 25 ml as reference solution at [lambda] max = 640 nm and AC in the range of 0 to 1 mg Fe3 + / 25 ml Bill’s law. The sample was dissolved with HCl: HNO3 = 3: 1, the Fe (II) part of the ore was completely oxidized and the total iron was measured in the form of Fe ~ (3+). The results were satisfactory. For samples containing 40-47% Fe, the standard deviation is 0.18%.