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在ｐＨ８．２的Ｈ３ＢＯ３－ＫＣｌ－ＮａＯＨ缓冲溶液中及非离子表面活性剂ＴｒｉｔｏｎＸ－１００存在下，锰（Ⅱ）与１，１０－邻菲罗啉及曙红反应生成无荧光的配合物使曙红的荧光熄灭，据此建立了一个荧光熄灭法测定痕量锰的新方法。方法的检出限为２μｇ／Ｌ，线性范围为０．２０～３．５０μｇ／２５ｍＬ，本方法已用于铝合金、面粉、小麦、麸皮中锰的测定。
Manganese (Ⅱ) reacts with 1,10-phenanthroline and eosin to form a non-fluorescent complex in H3BO3-KCl-NaOH buffer solution of pH8.2 and non-ionic surfactant TritonX-100 Based on this, a new fluorescence quenching method for the determination of trace manganese was established. The detection limit of the method was 2μg / L and the linear range was 0.20-3.50μg / 25mL. The method was applied to the determination of manganese in aluminum alloy, flour, wheat and wheat bran.