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Many people think that PM2.5 comes from outside mainly, actually it is not true. Studies have shown that ninety percent PM2.5 at the house come from the indoor activities. For modern people, there are about 90% people stay at the indoor to live and work, and 65% time stay at home. Air pollution of the civil and commercial buildings is high, which is the several times and dozens of times than the outdoor air pollution, some even more than 100 times. In recent years, the degree of indoor pollution of our country is deteriorating. Chinese indoor air quality and health seminars published that there are about 111000 people die because of the indoor air pollution, and the number of outpatient service is about 220000 people. Folk environmental pointed out those forty-three public indoor places in Beijing overweight the PM2.5 seriously. The indoor air pollution of our country is more serious than the developed countries. Tobacco contains more than 7000 kinds of compounds, which include 69 kinds of carcinogens and 172 kinds of harmful substances, which could cause lung cancer, heart disease, bronchitis and asthma outside, and it is also an important source of indoor air pollution. The research indicated that the PM2.5 accounted for 90% in the second hand smoking environment. Experts found through the monitoring that only people could smell the cigarette smoke, PM2.5 must overweight two times. And smoking will also bring the question of “the third hand smoke”. The tiny particles which caused by the smoking will remain in clothes, walls, carpets, furniture and even hair and skin. The toxic substances of decorate materials also is the reason for the indoor PM2.5 overweight. Although the decoration materials have no heavy taste, the harmful substance still exists, and they have become the invisible killer of indoor air invisible. The kitchen lampblack is also one of the reasons make the indoor air quality variation worse. The lampblack contains a large number of poisonous substances. Dust also is the important factors to affect indoor air quality. How to solve the problem of indoor PM2.5? One is to opening windows reasonably; second is to pay attention to indoor environment health; and third is to pay attention to indoor environment of chemical pollutant control. Our website will provide a discount as for D3 Gold Sale, Cheap D3 Gold and D3 Gold, so that more students can pay. This practice is favored by many players.
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PM2.5, environment, health,
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