Update: 2019-10-24 17:26 Source: LUFTMY
In recent years, with the continuous increase of environmental protection and ecological civilization construction in China, the air situation has been effectively improved. People began to pay more attention to indoor air quality.
Methods of daily improvement of indoor air quality
The survey shows that 99.8% of the respondents are concerned about air quality to varying degrees, and 91.9% of them are "very concerned" and "relatively concerned" about air quality.People in megacities pay more attention to air quality.The highest proportion of respondents from Chengdu "pay close attention to" air quality was 76.8%; Beijing was the second, 74.4%; Shanghai was the third, 72.9%.The younger you are, the more you care about air quality. More than 70% of the respondents aged 30 and below are "very concerned" about air quality; more than 60% of the respondents aged 31-35, 36-40 and over 45 are "very concerned" about air quality.Less than half of the 41-45 year olds were "very concerned" about air quality, 45.6%.
According to the survey, formaldehyde and other decoration pollutants were regarded as the largest source of indoor air pollution, accounting for 57.0%.20-35 year old respondents regard formaldehyde and other decoration pollution and "new furniture" as the main pollution source, while those over 36 year old respondents regard "kitchen lampblack" as the largest pollution source in their home.Male respondents think that the main source of air pollution in the home is decoration pollution such as formaldehyde and furniture, while the proportion of female respondents choosing "kitchen lampblack", "kitchen waste", "dust", "indoor (toilet) odor" is far higher than male respondents.
According to the self-assessment of indoor air quality, 15% of the respondents failed to meet the standard, nearly 3% of them were full marks, with an average score of 7.74.With the increase of household income, the self-evaluation of indoor air quality is increasing.Among them, the self-assessment of air quality of poor families with less than 30000 yuan is the lowest, which is 7.58 points; the self-assessment of air quality of well-off or middle-class families with more than 480000 yuan is the highest, which is 8.35 points.
According to the respondents, the biggest impact of indoor air pollution is "respiratory diseases such as throat pain, cough and pharyngitis", which is 63.4%.The second was "dry skin, itching, allergy and other symptoms", 51.1%.The other effects were as follows: "dizziness, dry eyes, drowsiness, memory loss and other early symptoms" (49.2%), "causing childhood leukemia" (35.8%), "causing infertility or fetal malformation of pregnant women" (25.8%), "causing lung cancer and other serious diseases in adults" (16.1%).Only 0.7% of the respondents said that indoor air pollution would not bring any harm to human body. The survey also showed that formaldehyde, 68.7%, benzene (toluene, xylene), 59.7%, TVOC (indoor organic gas) (36.9%), PM2.5 (34.6%) and ammonia (31.9%) were the most harmful substances.
Indoor air pollution has diversity, including not only the diversity of pollutant types, but also the diversity of indoor pollutant sources, that is, physical pollution (dust particles, etc.), chemical pollution (formaldehyde, etc.), microbial pollution (bacterial virus, etc.).Because the indoor environment is a relatively closed space and the air circulation is poor, the pollutants entering the room are easy to accumulate in the room, resulting in the increase of pollution index and pollutant concentration, which constitutes a harm to human body.At present, more than 900 kinds of indoor air pollutants have been found. Various pollutants are not easy to be found, monitored and ignored.Women, especially pregnant women, young children and the elderly, have less time for outdoor activities and stay indoors for a long time. Women also undertake more housework, such as cooking and cleaning. Therefore, indoor air pollution has a great impact on their health.
Therefore, it is suggested that we should further strengthen the propaganda of the harmfulness of indoor air pollution, strengthen people's cognition of the relationship between indoor air quality and human health, vigorously advocate the concept of healthy life and life style, renew the concept and improve the cognition.At the same time, we should widely carry out consumer education, often organize expert teams to carry out relevant training and lecture activities in communities and families, and improve people's ability to identify and protect indoor environmental pollution.
Aiming at indoor air pollution, more and more families use air purifier to purify air. The principle of air purifier can be simply seen as three steps: discovery, purification and release. The air finds the pollutants in the room, filters them, and then exhausts the air. The three steps can make the air purifier work best only when they are well coordinated.
In the current field of air purification, air quality sensor has almost become the standard accessory of purification equipment, whose function is to monitor the concentration of PM2.5 and other particles in the air.
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