测定水中锰最常用的是比色法。这些方法中包括了把锰氧化为紫色的高锰酸离子来进行测定;也有的用甲醛肟、吡啶2,6-二醛肟和吡啶2,6-二酮肟、1,2-(偶氮吡啶)-2-噻吩甲酰三氟丙酮和8-羟基喹啉形成有色产物法。但是用二价锰离子反应缺乏理想的选择性,而利用高锰酸离子的颜色测定时又缺乏必要的灵敏度。若把 The most commonly used method for the determination of manganese in water is colorimetry. These methods include the oxidation of manganese to purple permanganate ions to be measured; some with formaldehyde oxime, pyridine 2,6 - dialdehyde oxime and pyridine 2,6 - diketoxime, 1,2- (azo Pyridine) -2-thienoyl trifluoroacetone and 8-hydroxyquinoline to form a colored product method. However, the reaction with a divalent manganese ion lacks an ideal selectivity, and the colorimetric determination using permanganate ions lacks the necessary sensitivity. If you put it