Because live ozone is an extremely smooth physical vapor, collecting and accurately measuring its water content in gas and in water becomes a difficult challenge in the short term. ozone aging chamber several ways of ozone concentration detection for your reference.
l. Ozone aging chamber iodometric method.
The classic way of measurement in the past, with ozonation gas so that the iodine mineral acid in potassium iodide solution out and the chromogenic agent, followed by sodium thiosulfate burette recovery to no colour, to the number of sodium thiosulfate consumed to measure the concentration of ozone. This method chromogenic agent figurative, equipment cost-effective, but with a variety of drugs, wash bottles, measuring cylinders, balance scales, burettes and other organic chemical laboratory equipment, the application of adverse effects will, and vulnerable to other reducing agents (such as N0, CL, etc.) obstruction, the second method at this stage is still the limit of measurement in China.
3, electrochemical method.
The use of water in the ozone in the electroactive surface layer caused by photoelectric catalytic reduction, electrochemical control circuit in the electric flow transformation curve graph and the aqueous solution in the ozone concentration is proportional, this type of instrumentation has statistical data output role, can automatically measure and can maintain the closed-loop control feedback control of the ozone disinfection machine, cost effective than the UV method, the volume is also smaller. At this stage in the medium and large water treatment projects used.
2, Ozone aging chamber UV digestion and absorption method.
The use of ozone on the light wavelength into = 260nm UV digestion absorption value, so that the UV in the ozone atmosphere attenuation coefficient, and then by optical components, electronic circuit (more power supply circuit, data processing methods, digital-to-analog conversion) to obtain statistical data output, this way, can be continuous free online measurement.
4, Ozone aging chamber colorimetric method.
With the iodine amount method is the same chemical method, is the use of ozone to chemical reflections produced by the chromogenic agent or fading problem clear ozone concentration. It can use potassium iodide, o-toluidine or indigo orchid dye main compound, can immediately human eye view check with standard colour tube or colorimetric disc more, also can use photometer test, this method is effective, cost fee is not high, in China at this stage level suitable for marketing promotion, but detection of drugs is a time consumable.