CONCENTRATION MEASURING METHOD, DETECTING METHOD AND APPARATUS FOR SPECIFIC CHEMICAL SUBSTANCE IN DRAINAGE OR SPECIFIC DRAINAGE AND DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a concentration measuring method, detection method and apparatus for a specific chemical substance in drainage or specific drainage, which are simple and quickly applicable. SOLUTION: The method includes: a database compiling step for creating a predetermined database by measuring fluorescence in the whole of a predetermined range of excitation wavelength and absorbance in the whole of a predetermined range of excitation wavelength; a dilution ratio setting step for calculating an appropriate dilution ratio for diluting a liquid sample obtained by continuously sampling raw water according to the properties of the raw water; a dilution step for obtaining a diluted raw water by mixing the raw water with diluting water; a measurement step for measuring fluorescence spectrum intensity and absorbance of the diluted raw water; and a concentration calculating step for estimating soluble chemical oxygen demand, component concentration or mixing concentration of a specific chemical substance or the like in the diluted raw water from the measurement results in the measurement step using a predetermined correlation, and for detecting the mixing of the specific chemical substance or the like in the diluted raw water using the dilution ratio and also calculating the mixing concentration. COPYRIGHT: (C)2011,JPO&INPIT