What determines the air quality level, the primary pollutant or the sum of the pollutant pollution i

Why Air Testing? The reason is that indoor environmental pollution has become one of the killers that seriously affects human health.

The importance of indoor air quality We spend more than 70% of our time in the indoor environment. Good indoor air quality is the most important factor to ensure good health, substandard indoor air can lead to physical discomfort and poor health (such as headache, chest tightness, drowsiness, allergies, eye strain, frequent colds, etc.). Pregnant women, children, the elderly, office workers, and people with respiratory and cardiovascular diseases are more susceptible to poor indoor air quality.

Common Indoor Air Pollutants 1Contamination of building materials. The gypsum board used in modern building decoration breeds bacteria, viruses and other microorganisms; 2.

Pollution caused by enclosed buildings. The fully enclosed building isolates the flow of natural fresh air....

Air quality levels are determined by calculating the air pollution index, which is divided into five levels and seven categories. First of all, the pollution index of the single pollution factor should be calculated, and the air pollution index with the largest calculation result is the corresponding pollutant. If the pollution single factor calculations are the same, then the primary pollutants are selected in the order of respirable particulate matter, sulfur dioxide, nitrogen oxides, and carbon monoxide.

Both indicators affect air quality, and the air quality evaluation standard is a comprehensive indicator, but any major pollutant exceeding the standard will affect air quality.

The area around East Lake and Moshan is A, and other places are B. That's what I read.

The air pollution index is divided into seven levels of 300 and greater than 300, corresponding to the seven levels of air quality. The air pollution index is 0 50, and the air quality level is I, and the air quality status is excellent.

At this time, there is no air pollution problem, and there is no danger to the health of the public. The air pollution index is 51 100 and the air quality level is level II, which means that the air quality status is good. At this time, air quality is considered acceptable and poses no danger to public health except for a very small number of people who are particularly sensitive to a particular pollutant.

The air pollution index is 101 150 and the air quality level is III(1), which means that the air quality status is slightly polluted. At this time, people who are more sensitive to pollutants, such as children and the elderly, people with respiratory or heart diseases, and people who enjoy outdoor activities, will have their health affected, but there will be little impact on healthy people. With an air pollution index of 151 200 and an air quality level of III(2), the air quality profile is classified as mildly polluted.

At this time, almost everyone's health is affected, and the adverse effects are especially pronounced for sensitive groups. The air pollution index is 201 300, the air quality levels are IV(1) and IV(2), and the air quality status is classified as moderate and moderately heavy pollution. At this time, everyone's health will be seriously affected.

The air pollution index is greater than 300, the air quality level is V, and the air quality status is severely polluted. At this point, everyone's health will be seriously affected.

The air pollution index used in China is divided into six levels, from low to high: excellent, good, light pollution, moderate pollution, severe pollution and severe pollution. The specific pollution index and corresponding grades are as follows:

1.0-50: Excellent.

2.51-100: Good.

3.101-150: Shouting crack pollution.

4.151-200: Moderately known pollution.

5.201-300: Heavy contamination.

6.Greater than or equal to 301: Severely polluted Zheng Lao.

The pollution index is calculated based on a variety of factors such as the type, concentration, and duration of pollutants in the air. In practical applications, different pollutant concentrations have different effects on air quality, so the air quality levels corresponding to the pollution index of different pollutants are also different. The establishment of the Air Pollution Index aims to provide the general public with scientific and easy-to-understand air quality information, so as to facilitate the citizens to take corresponding protective measures in a timely manner to maintain their health.

Air Pollution Index:

The concentrations of several air pollutants monitored are reduced to a single numerical form, and graded to represent the degree of air pollution and air quality status.

Top Contaminants:

Measure the concentrations of the three gases that pollute the air, namely NOx (nitrogen oxides), TSP (total suspended particulate matter), and SO2 (sulfur dioxide), and use the highest concentration value of the three as the top pollutant of the week.

Air Quality Progression:

It is the grade status of air quality, which is divided according to the size of the pollution index.

Attachment: Air Quality Weekly Report. doc