PM 2.5 air quality monitor

PM 2.5 air quality monitor is a high-precision instrument used to measure PM2.5 dust concentration in the air. With the continuous development of economy and society, people are paying more and more attention to environmental pollution problems, and PM2.5 dust is one of the main factors causing air pollution. The diameter of PM2.5 dust particles is less than or equal to 2.5 microns. It can enter the human lungs through the respiratory tract, posing a serious threat to human health. Therefore, the emergence of PM 2.5 air quality monitor provides people with an effective detection method, helps people understand air quality more comprehensively, and protects the health of the people.

PM 2.5 air quality monitor application

PM 2.5 air quality monitor is widely used in various occasions, such as indoor buildings, offices, public places, factory workshops, etc. Especially in haze weather, PM 2.5 air quality monitor allows people to understand the air quality in time, choose the correct protective measures, and effectively prevent and reduce health hazards. In addition, PM 2.5 air quality monitor is also widely used in environmental monitoring, air purification equipment testing, process control and other fields.

The harm of PM2.5 to human body

1. Respiratory system

As we all know, PM2.5’s most direct and greatest impact on the human body is the damage it causes to the respiratory system. Fine particulate matter below PM2.5 can no longer be blocked by the human body's nasal cavity and throat. They can go all the way down, enter the bronchioles and alveoli, and then enter the capillaries through the alveolar walls, and then enter the entire blood circulation system.

PM2.5 is like a carrier, carrying many harmful substances, such as bacteria, carcinogens polycyclic aromatic hydrocarbons, heavy metals, etc. A large amount of particulate matter entering the lungs can block local tissues and reduce the ventilation of local bronchial tubes. Deep in the respiratory system is a sensitive environment. Fine particles staying in the respiratory system as foreign matter for a long time can inflame the respiratory system, causing coughs, dyspnea, rhinitis and pharyngitis, aggravating asthma, and chronic bronchitis.

2. Cardiovascular disease

PM2.5 enters the lungs through the respiratory system, and the lungs are blocked by PM2.5 particles. The function of exchanging oxygen with the pulmonary capillaries decreases, and blood oxygen exchange is insufficient. The reduction of oxygen in the blood will trigger a series of adaptive changes in the human body. Two prominent points are: first, in order to ensure the oxygen supply to the human body, the blood flow in the blood vessels will become faster; second, the blood vessel membrane will become thicker, and the blood vessel cavity will become narrow, and the risk of thrombosis will also increase. .

In addition to causing changes in the blood vessel membrane, many harmful substances carried by PM2.5 directly enter the blood after inhalation, which will directly damage the blood vessel intima, thereby thickening the blood vessel intima, causing stenosis, increasing blood pressure, etc., increasing the risk of thrombosis. possible. It can even cause heart diseases such as congestive heart failure and coronary artery disease.

3. Impact on newborns

According to surveys, high concentrations of fine particle pollutants may affect fetal development. PM2.5 adheres to many harmful substances such as heavy metals and polycyclic aromatic hydrocarbons, causing placental hemotoxicity in pregnant women, which can easily lead to fetal intrauterine growth retardation, low birth weight, and congenital functional defects. Toxins can also pass through the placenta and directly poison the fetus, causing The mortality rate of premature infants and neonates is increasing, especially in the early stages of pregnancy.

PM 2.5 air quality monitor working principle

The measurement principle of the PM 2.5 air quality monitor is to use the Laser Dust Sensor, which emits a laser beam to detect PM2.5 dust particles in the air and obtain its concentration value. This instrument has the advantages of high precision, fast response speed, good stability, and easy use. It is suitable for both professional measurement and general users. By using PM 2.5 air quality monitor, people can always know the PM2.5 concentration in the air and take effective measures in time to protect the health of themselves and their families.

In short, PM 2.5 air quality monitor is an important air quality detection instrument, which has broad application prospects and important social significance. In the current work of environmental protection and health security, the emergence of PM 2.5 air quality monitor will have a positive impact on society, provide people with a cleaner and healthier living environment, and promote us towards a better future.