Abstract:

This article analyses the examination method of water quality,puts forward the Lambert-Beer law as the basis of measuring the aqua strength,calculates the relationship between the material absorbency and the aqua strength on the middle and high strength by Least square method,and designs the holistic system structure.The redundant chlorine parameter of aqua is taken as an example to analyze the authentication of the water quality detector.The results show that the equipment has good stability and linearity with better accuracy in medium and high concentration detection,and meets the rapid aqua detecting demands of different industries.

Key words: water quality detection;absorbency;least square method