DETERMINATION OF ORGANIC COMPOUNDS IN WATER USING INHIBITORY EFFECT ON THE LUMINOL-HYDROGEN PEROXIDE-PEROXODISULFATE CHEMILUMINESCENCE REACTION

A simple and rapid method for the determination of such organic compounds as geosmin, 2-methylisoborneol(2-MIB) was investigated by chemiluminescence method. Luminol-hydrogen peroxidepotassium peroxodisulfate co-oxidation system in alkaline solution was adopted as chemiluminescence reaction. The chemiluminescence intensity was clearly decreased with an increase in concentration of geosmin and 2-MIB. The concentrations of geosmin and 2-MIB were measured by using the inhibitory effect on the CL,"reaction. The detection limits for these compounds were 5.5x100(-11) M for geosmin and 1.2x10(-11) M for 2-MIB. The relative standard deviations(n=5) for 15.5x10(-11) geosmin and 1.2x10(-10) M 2-MIB were 5.4% and 10%, respectively.