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2022-10-23
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Local PM2.5 instruments are expected to recapture the market in three to five years

since 2013, most parts of China have been shrouded in haze, prompting the market for PM2.5 monitoring instruments; In recent days, PM2.5 pollution caused by straw burning in some cities has once again become a problem of concern to the public, and the effective monitoring of PM2.5 has become the key to the next instrument development in this field, especially the research and development of domestic PM2.5 detection instruments, which urgently need to break through the bottleneck

pm2.5 refers to the general term for solid particles or droplets with a diameter of less than or equal to 2.5 microns in the air, also known as particulate matter that can enter the lung. Its main source is man-made emissions, some of which come from smoke and dust directly emitted by factories, urban life and motor vehicles, and a large part of which are secondary pollutants produced by photochemical reactions of pollutants such as particulate matter, nitrogen oxides and volatile organic compounds (VOC) in the atmosphere. The main sources are vehicle exhaust, petrochemical, medical and spraying exhaust, sulfur dioxide, nitrogen oxides, coal smoke and dust from thermal power plants, cooking oil smoke from restaurants, construction, cement and road dust, etc

how to monitor PM2.5

from the end of last year to the beginning of this year, haze weather continued to occur in North China, the Huang Huai River, the Jiang Huai River, Jiangnan and other central and eastern regions of China, and PM2.5 concentrations in many places were close to extreme values, suffering from serious air pollution. In the face of the long-lasting haze weather, the Ministry of environmental protection requires all parts of China to strictly detect and control air pollution, focusing on preventing the temperature from continuing to rise and gradually increasing the amount of fine particles

recently, a large wave of air pollution caused by straw combustion swept through major agricultural production provinces, bringing serious harm and impact to people's lives and health and travel. PM2.5 monitors in a region of Anhui even showed values close to the burst table. So how did the monitoring personnel of relevant departments get effective data for PM2.5, which we can't identify in detail? Take a monitoring point in an area as an example to let everyone know the detection process

on the roof of the monitoring sub station of the Environmental Protection Bureau in a certain region of China, there are several collection pipes for collecting air samples, which are connected with the monitoring equipment of the monitoring station. After the air enters the pipe, the particles in the air will be screened, the large particles will settle down, and the particles with a diameter of less than or equal to 2.5 microns will enter the instrument. This is the fine particle PM2 that has attracted much attention recently, and it is also the manufacturer and manufacturer of cartons, cartons and plastic bags 5。

The monitoring principle of

pm2.5 is similar to that of PM10, which is analyzed and monitored by samples on filter paper. After a period of operation, black dots the size of coins are closely arranged on the white filter paper belt in the monitoring instrument. PM2.5 and other information will be printed on the paper tape in the form of black dots. The black dots on the paper tape will be formed every hour and finally converted into data through automatic analysis. This data is the concentration of PM2.5 in the air in a specific period of time

pm2.5 promotes the expansion of the environmental monitoring instrument market

the increase of malignant environmental pollution events in recent years has promoted the rapid development of the environmental monitoring industry, but the long-term occupation of the high-end market represented by PM2.5 monitoring by foreign-funded enterprises has also triggered many thoughts

it can be seen that since PM2.5 came into public view more and more in 2011, it has greatly promoted the process of environmental monitoring in China, and PM2.5 monitoring was carried out all over the country last year. In 2012, Wu Xiaoqing, Vice Minister of the Ministry of environmental protection, said that during the 12th Five Year Plan period, China will build nearly 1500 PM2.5 monitoring points, with an initial investment of more than 2billion yuan. At the same time, the service life of PM2.5 detection instruments is about 3 years, and there will be continuous new demand in the future

although PM2.5 monitoring has made great progress, at present, PM2.5 data are mainly monitored in some first and second tier cities. With the acceleration of China's urbanization process, energy consumption and vehicle ownership in third and fourth tier cities will increase rapidly, and a large amount of sulfur dioxide, nitrogen oxide and volatile organic compounds will be emitted, resulting in the aggravation of secondary pollution such as fine particles, ozone and acid rain, The trend of environmental monitoring to cover the third and fourth tier cities will advance synchronously with the process of urbanization

at present, China has established an environmental quality monitoring system that covers the interior, ocean and space, and monitors a series of environmental problems including atmosphere, water, soil, radiation, noise, ocean, regional ecological environment, etc. China's awareness of environmental protection has also promoted the rise of the environmental monitoring instrument industry

pm2.5 equipment imports more domestic instruments within five years or catch up with PM2.5 with a diameter of less than 1/20 of the thickness of hair, which can not only cover 1.43 million square kilometers of land in China, but also stimulate billions of yuan of PM2.5 monitoring equipment, billions of yuan of environmental monitoring instruments and even trillion level environmental governance investment. However, there is a reality that has to be put in front of instrument manufacturers. Taking Guangdong as an example, American brands account for more than 95% of the PM2.5 monitoring instruments put into use in Guangdong Province

at present, there are 120 state-controlled (provincial) air monitoring points in Guangdong. According to the national requirements, one set of PM2.5 monitoring instruments must be equipped at one station, and one set should be standby at three stations. By the end of 2012, 62 points had been installed. In addition to the state-controlled air monitoring points, some cities will set additional PM2.5 monitoring points according to their own needs, such as Guangzhou, Shenzhen, Dongguan, Foshan and other places

Wu Xiaoqing, Vice Minister of the Ministry of environmental protection, once said that according to the 12th Five Year Plan for the prevention and control of air pollution in key areas, China will build nearly 1500 PM2.5 monitoring points, and the initial investment will exceed 2billion yuan. It just confirms Li Yuanbin's calculation. In addition, the operation and maintenance costs of PM2.5 monitoring points also need to be considered. Li Yuanbin roughly estimated that these two costs accounted for 30% to 40% of the total cost of PM2.5 monitoring point configuration

in fact, the rise of China's PM2.5 monitoring instrument market took only two years. However, there are few channels to participate. Just because the market comes too fast and too suddenly, domestic instrument manufacturers have lost the chain in technology and talent allocation. Li Yuanbin, Deputy Secretary General of Guangdong Environmental Protection Industry Association, said: China's local PM2.5 instruments are expected to regain the initiative in the domestic market within 3 to 5 years

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