【摘要】 本文用邻菲罗林为显色剂,以40～60目国产001×7(732型)强酸性阳离子交换树脂为呈色载体,直接测量吸附在树脂上的铁(Ⅱ)——邻菲罗林有色络合物的吸光度,籍以定量检测水中ppb级的铁。更多还原

【Abstract】 An ion-exchanger colorimetric method for the determination of iron in natural water has been developed.1, 10-phenanthroline, which forms a complex with iron, is used as the eolour reagent. The direct measurement of the resin phase absorbance after the sorption of coloured sample complex species, can be used for the determination of traces of iron. The recovery rate is more than 95%. The relative standard deviations is 6.2%. The method is sensitive, simple and repid.更多还原