A series of problems may arise from time to time in ozone. Therefore, the detection of ozone is also imperative for us.
Ozone concentration detection methods can be broadly divided into two major categories of chemical analysis and instrumentation.
The most commonly used chemical analysis method is potassium iodide method, boric acid potassium iodide absorption spectrophotometry and indigotin sodium sodium spectrophotometry. The first two methods have some limitations in the use of the ozone because of their poor specificity or poor stability. The indigo-sodium disulfonate spectrophotometric method is highly sensitive to ozone and does not require standards because of its high sensitivity. Can be used for quantitative measurement of O3, so in 1996 the national air quality standard GB3095-1996, the method used in the original standard boric acid iodination as a standard for chemical detection O3.
The advantages of the instrumental method for detecting ozone are its high sensitivity, good repeatability, and low level of operator requirements. This is a good method, but because such instruments are generally expensive, they are not easy to use universally. After many years of efforts, Shanmeishuimei Co., Ltd. has continuously reduced the price of ozone detectors through the procurement of scale in the process of improving quality. More and more customers use ozone detection equipment. It is finally getting used on a large scale.
The principle of detecting ozone concentration is to use chemiluminescence, ultraviolet absorption and electrochemical methods. Since the chemiluminescence method requires the use of ethylene cylinders, and ethylene is combustible, it is dangerous and inconvenient. Therefore, ultraviolet absorption and electrochemical methods are commonly used in the world in recent years.
The principle of ultraviolet absorption method is based on the absorption of ultraviolet light with a wavelength of 254 nm by O3, and the concentration of O3 can be calculated according to Bill's Law. This method is simple in structure, high in sensitivity and fast in response, and has a good range in a concentration range of 0-10000 ppm. Linear, and both zero drift and span drift are small.
The electrochemical method is that the measured ozone gas contacts the apparatus in a diffusion manner. And reacted. Output a stable electrical signal. The gas concentration value can be displayed on the display screen in a stable manner.
Ozone concentration detection methods can be broadly divided into two major categories of chemical analysis and instrumentation.
The most commonly used chemical analysis method is potassium iodide method, boric acid potassium iodide absorption spectrophotometry and indigotin sodium sodium spectrophotometry. The first two methods have some limitations in the use of the ozone because of their poor specificity or poor stability. The indigo-sodium disulfonate spectrophotometric method is highly sensitive to ozone and does not require standards because of its high sensitivity. Can be used for quantitative measurement of O3, so in 1996 the national air quality standard GB3095-1996, the method used in the original standard boric acid iodination as a standard for chemical detection O3.
The advantages of the instrumental method for detecting ozone are its high sensitivity, good repeatability, and low level of operator requirements. This is a good method, but because such instruments are generally expensive, they are not easy to use universally. After many years of efforts, Shanmeishuimei Co., Ltd. has continuously reduced the price of ozone detectors through the procurement of scale in the process of improving quality. More and more customers use ozone detection equipment. It is finally getting used on a large scale.
The principle of detecting ozone concentration is to use chemiluminescence, ultraviolet absorption and electrochemical methods. Since the chemiluminescence method requires the use of ethylene cylinders, and ethylene is combustible, it is dangerous and inconvenient. Therefore, ultraviolet absorption and electrochemical methods are commonly used in the world in recent years.
The principle of ultraviolet absorption method is based on the absorption of ultraviolet light with a wavelength of 254 nm by O3, and the concentration of O3 can be calculated according to Bill's Law. This method is simple in structure, high in sensitivity and fast in response, and has a good range in a concentration range of 0-10000 ppm. Linear, and both zero drift and span drift are small.
The electrochemical method is that the measured ozone gas contacts the apparatus in a diffusion manner. And reacted. Output a stable electrical signal. The gas concentration value can be displayed on the display screen in a stable manner.
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