| 摘要 |
The density of chlorine dioxide gas in a wet acid atmosphere may be continuously monitored with a photometer energized by a constant voltage incandescent light source illuminating a 0.5 inch thickness, continuous flow sample spaced between quartz glass windows. The emergent light is filtered to pass approximately 4400 Angstrom wavelength light to a selenium photocell. Photocell power output measuring means is calibrated to correspond with chlorine dioxide gas density. The concentration strength of an aqueous solution of chlorine dioxide is continuously monitored with a similar photometer having a 0.125 inch sample space between windows and a 4600 Angstrom filter for the emergent light.
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