水体有机物在线荧光监测仪的研制

Development of online fluorescence monitor for organic matter in water

摘要:

为保障水质安全，实现水体中有机污染物的在线监测，基于荧光检测原理，设计了一种水体有机物在线荧光监测仪。监测仪包括荧光检测装置、流路及采样模块、电源模块、工控机及触摸屏、数据库及分析软件、数据传输模块。详细介绍了荧光检测装置的组成结构。给出了监测仪的光学参数、电气参数和结构参数，并对其性能进行了测评。监测仪光谱检测范围为300nm~750nm，检测时间小于10s。采用色氨酸水溶液作为样品进行实验测试，监测仪线性度判定系数R2为0.95，荧光强度检测结果的相对标准偏差（RSD）为2.68%。监测仪远程数据传输可靠稳定，维护周期为每月一次。该监测仪可以对水体有机污染物进行实时监测，能够及时获取水质信息，检测速度快，无需检测试剂，有效避免化学试剂对环境可能造成的二次污染。

Abstract:

In order to ensure the safety of water quality and realize the online monitoring of organic pollutants in water, based on the principle of fluorescence detection, an online fluorescence monitor for organic matter in water was designed. The monitor includes fluorescence detection device, flow path and sampling module, power supply module, industrial computer and touch screen, database and analysis software, and data transmission module. The structure of fluorescence detection device is introduced in detail. The optical, electrical and structural parameters of the monitor are given, and its performance is evaluated. The spectrum detection range of the monitor is 300nm-750nm, and the detection time is less than 10s. Tryptophan aqueous solution was used as the sample for the experimental test. The linearity determination coefficient R2 of the monitor is 0.95, and the relative standard deviation (RSD) of fluorescence intensity test results is 2.68%. The remote data transmission of the monitor is reliable and stable, and the maintenance cycle is once a month. The monitor can monitor the organic pollutants in water in real time, and can obtain the water quality information in time. It has the advantages of high detection speed and no detection reagent. And it can effectively avoid the secondary pollution caused by chemical reagents.