Abstract: The fluorescence characteristics of C₆H₆NO₃SNa have been evaluated by simulating the conditions of circulating water system. The results show that temperature,pH,salt ions and organophosphorus almost have no influence on the fluorescence intensity of C₆H₆NO₃SNa. Only can biocides have weakening effect on the fluorescence intensity. This problem can be solved by increasing the dosage of C₆H₆NO₃SNa. In actual circulating water,C₆H₆NO₃SNa is used as tracer,the lowest detection limit of composite water treatment agent C₆H₆NO₃SNa-PAA is 2.68×10^-4 mg/L. This experiment proves that C₆H₆NO₃SNa can be used as fluorescence tracer in circulating water,having strong application value industrially for on-line detection technique of water treatment agent.

Key words: circulating water, water treatment, fluorescence, C₆H₆NO₃SNa, tracer

摘要： 通过对循环水系统的条件进行模拟，对对氨基苯磺酸钠（C₆H₆NO₃SNa）的荧光特性进行了评价。结果表明：循环水的温度、pH、盐离子和有机磷对C₆H₆NO₃SNa的荧光强度几乎没有影响，只有杀生剂会对荧光强度产生削弱作用，在工业中可以通过增大投加量的方法来解决。在实际循环水中，以C₆H₆NO₃SNa作示踪剂，复配水处理剂C₆H₆NO₃SNa-PAA的最低检出限为2.68×10^-4 mg/L。该实验证实了C₆H₆NO₃SNa可以被用作循环水中的荧光示踪剂，在工业上对水处理剂的在线检测中具有较强的应用价值。

关键词: 循环水, 水处理, 荧光, 对氨基苯磺酸钠, 示踪

CLC Number: 

• TM631