APPARATUS FOR MEASURING CONCENTRATION OF COMPONENT IN LIQUID PHASE AS A RESULT OF VAPOR PHASE SUBSTITUTION

摘要

PURPOSE:To measure the concentration of ozone in a specimen liquid by measuring the quantity of component being purged into a vapor phase with a detecting tube beforehand by the passing of air, picking up the specified amount of the specimen liquid accurately, and measuring the specimen liquid. CONSTITUTION:A specified amount of a specimen liquid A is picked up and injected through an injecting port 7 of a vapor phase purging device 1. An air diffusing pump 2 is driven quickly. Air incorporating oxygen is made to be fine bubbles through an air diffusing device 4. The bubbles are diffused into the specimen liquid A with pressure. In this way, the component of the specimen liquid A incorporated in the liquid phase A completely substitutes for the component in a vapor phase B. The substituted air is made to pass through a gas detecting tube 5 which is provided in the vapor phase B at the upper part of a vapor phase substitution device 1. Thus the total amount of the component in the vapor phase B is accurately measured by utilizing the integrated effect of the detecting tube 5. In this way, the concentration of the component incorporated in the specimen A is measured. Since the specified amount of the specimen liquid A is accurately measured, picked up and measured again, the concentration of ozone in the specimen liquid A can be accurately measured when the amount of component substituted in the vapor phase B is measured with the detecting tube 5 beforehand by the passing of air.