微细气泡技术

[中文适用范围]： 本文件规定了水中细小气泡分散体中氧含量的评估方法。采用的三种测试方法包括光学传感器、电化学探针和碘量法。前两种方法的优势在于可以进行现场实时测量，并且可以使用市售仪器。最后一种方法由完善的化学分析程序组成，在没有前两种方法所用仪器的情况下具有优势。电化学和光学传感器法的检测限在仪器的使用说明书中注明，大多数情况下为 0.1 mg/l 或 0.2 mg/l。上限取决于所用仪器的规格。大多数仪器允许测量过饱和样品。碘量法的测量范围在 0.2 mg/l 和 20 mg/l 之间。注：除碘量法外，还可以采用其他化学分析方法[1]作为替代。 [外文原描述]： This document specifies evaluation methods for the oxygen content in fine bubble dispersion in water. Three test methods which are adopted include the optical sensor, the electrochemical probe and the iodometric method. The first two methods have an advantage in availability of in situ and real-time measurement, and high accessibility to commercially available instruments. The last one, composed of a well-established chemical analysis procedure, is advantageous in the situation where the instruments to be used in the first two methods are unavailable. The detection limits of the electrochemical and optical sensor methods are stated in the instruction manuals of the instruments, in most cases 0,1 mg/l or 0,2 mg/l. The upper limit depends on the specification of the instrument used. Most instruments allow measurement of a supersaturated sample. Measurement range of the iodometric method is between 0,2 mg/l and 20 mg/l. NOTE Chemical analysis methods other than the iodometric method can be applied [ 1 ] as an alternative.