荧光法测定水中邻苯二胺的研究

The study of fluorescence determination of o-Phenylenediamine in water

在酸性介质中邻苯二胺与丁二酮反应生成2,3-二甲基喹喔啉,溶液反应温度为80℃,时间为60 min,该化合物具有较强的荧光,最佳激发波长为365 nm,发射波长为483 nm。在十二烷基苯磺酸钠的存在下,荧光强度明显提高,邻苯二胺在10—2000μg/L浓度范围内与转化产物的荧光强度呈良好的线性关系。

o-Phenylendiamine can react wi th butyl diketone to produce 2 ,3-dimethyquinoxaline in acidic medium at 80℃ for 60 min. The compound has strong fluorescence. The optimal excitation wavelength is 365 nm, emission wavelength is 483 nm. In the presence of dodecyl benzene sulfonic acid sodium, the fluorescence intensity in-creased significantly. The concentration of o-phenylenediamine in the range of 10-2000 μg/L has a good linear re-lationship with the fluorescence intensity of the product.