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Ozone Concentration Detection Method

Ozone aging is suitable for aging cracking test of non-metallic materials and rubber products. Ozone aging box simulation and ozone concentration in the atmosphere of strengthening, effect of ozone on rubber, rapid detection and identification of sample resistance to ozone aging performance and method of anti-ozone agent protection efficiency, and adopt effective measures to prevent aging, improve the service life of rubber products.

In the experiment, the concentration of ozone control is very important, that is, the amount of ozone production is more important, we do a detailed explanation of the principle of ozone generation.

Ozone aging box ozone generator can be divided into: corona discharge, electrolysis, ultraviolet radiation, nuclear radiation type (the most widely used is the corona discharge type ozone generator. The utility model is composed of an ozone tube, an ozone power source, an air source device and an electric control device.

The formation of ozone in the presence of ultraviolet radiation by electron irradiation or exposure from diatomic oxygen. Industry, the use of dry air or oxygen, the use of 5~25kv AC voltage for silent discharge. In addition, the electrolysis of dilute sulfuric acid at low temperature, or heating the liquid oxygen can be made of ozone. Because of the instability of ozone, ozone is generally made on the spot. The common method of ozone is electrolysis, electrolysis of water into oxygen, and then make the free oxygen into ozone.

There are several methods to detect the concentration of ozone in the ozone aging test box, such as the ozone iodine method, the ozone ultraviolet absorption method, the ozone electrochemistry method and the ozone colorimetric method. Here we do a simple introduction to these methods.

1 ozone iodine method: the use of ozone aging gas to make potassium iodide solution free iodine and color, and then use sodium thiosulfate titration reduced to colorless, the number of sodium thiosulfate to calculate the concentration of ozone depletion.

2 ozone ultraviolet absorption method: the use of ozone gas to make potassium iodide solution free iodine and color, and then use sodium thiosulfate titration reduced to colorless, the number of sodium thiosulfate to calculate the concentration of ozone depletion.

6 ozone electrochemical method: the use of ozone gas to make potassium iodide solution free iodine and color, and then use sodium thiosulfate titration reduced to colorless, the number of sodium thiosulfate to calculate the concentration of ozone depletion.

4 ozone colorimetric method: the same as the chemical method of iodine, is the use of ozone to react to the occurrence of chemical reagents to determine the color or decolorization of ozone concentration.


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