What Are the Most Common Environmental Health Issues?

Environmental Health Index (EHI) is a quantitative index used to quantify the environment and human health or human feelings. It is a dimensionless index with a value from 0 to 100. A larger value indicates a better environment or a more comfortable human body.

Environmental Health Index

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Environmental Health Index (EHI) is a quantitative index used to quantify the environment and human health or human feelings. It is a dimensionless index with a value from 0 to 100. A larger value indicates a better environment or a more comfortable human body.

Chinese name

Environmental Health Index

Foreign name

Environment Health Index

Presentation of the environmental health index

In March of 2016, Tsinghua University's Building Environment Testing Center released the "Home's First Indoor Indoor Ecological and Environmental Health Report". The report shows that the overall status of indoor air quality in urban residential buildings in China is not optimistic. Although people have been paying attention to environmental issues led by PM2.5 in recent years, most people still cannot avoid some misconceptions and ignore the environmental "minefields" around us.

According to data provided by the China Indoor Environment Monitoring Center, the annual number of deaths caused by indoor air pollution in China can reach 111,000, the number of excess outpatients can reach 220,000, and the number of excess emergency outpatients can reach 4.3 million. Serious indoor environmental pollution not only causes loss of people's wealth, but also erodes people's health and even life.

Old people often have dizziness and headache. Is it really all about old age? My child often coughs. Is it really a cold? We often suffer from insomnia. Is it really stressful? Itching is unbearable with red spots on my body. Is it really just a skin disease?

Almost everyone is a victim of indoor pollution. Air pollution has gradually gained attention, but indoor environmental pollution has received little attention. Correspondingly, modern people live or work indoors 90% of the time, and more than 60% of them are at home. A large amount of data at home and abroad confirms the disturbing fact that indoor air pollution is often worse than outdoor. Still high.

It is particularly worthy of warning that relatively disadvantaged groups are children, pregnant women, the elderly and chronic patients. Among them, because children's bodies are in the process of growth, their breathing volume is 50% higher than that of adults, and children usually live longer indoors. Therefore, children are more vulnerable to indoor air pollution than adults.

With the development of society, people's requirements for the environment and their ability to control the environment continue to improve. In order to improve the quality of life, we have established a lot of standards for the environment. Temperature to achieve the purpose of improving the quality of life. With the improvement of technology, our attention to the surrounding environment is constantly increasing, and the environmental factors we can perceive are also increasing. For this reason, there is a question about how to evaluate the environment. The problem was that, due to technical factors, environmental assessments could only be performed qualitatively, but not quantitatively. Now we can use the environmental health index to quantitatively measure and evaluate different environments. Therefore, the significance of the environmental health index Environment is evaluated on a quantified platform. It provides a unified quantitative platform for environmental assessment.

Definition of Environmental Health Index

The Environmental Health Index (EHI) is a dimensionless index that quantitatively describes the state of environmental health. It is used to quantify the human living environment. It is used to quantify the parameters that are directly related to human health and feelings in the human living environment. The index is a value of 1-100. A larger value indicates a better environment. Or the worse the body feels, the index includes the following parameters: temperature, humidity, fine particulate matter Pm2.5, organic volatiles Tvoc, noise, and the environmental health index is quantitatively evaluated based on the sense of comfort and the degree of harm to the human body. For individual parameters, an environmental health sub-index is also specified. The parameters involved in the environmental health assessment are temperature, humidity, particulate matter PM2.5, organic volatile matter Tvoc, and noise.

Composition of the environmental health index

The most common environmental parameters in our current environment are mainly Pm2.5, TVOC, noise, light, temperature, and humidity. Among them, hazards that are proportional to the parameter values are Pm2.5, TVOC, noise. Temperature and humidity are the most physical The appropriate value is used as the optimal value. As the parameters are continuously increased and decreased, the impact on human comfort and health is increasing. Therefore, the environmental health index we defined includes five parameters: air particulate matter PM2.5, total organic volatile matter, temperature, humidity, and noise.

Evaluation of environmental health index

The environmental health index is a dimensionless index from 0 to 100. The value changes with the change of the measurement parameters. A smaller value indicates that the detected environmental parameter is worse or the human body feels worse. A higher value indicates that the monitored environment is better. The more comfortable.

Environmental Health Index Application

The environmental health index is a quantitative indicator of the comprehensive environmental assessment. In life, we often encounter similar purchases of houses.

2. Disputes caused by unclear environmental factors after renting a house. For example, the agency told us that the house is in a good location and the surrounding environment is good. For the user, how to evaluate the quality of the environment is a major problem. Some The residential environment is very good, but it may be difficult for users to understand because the night noise may be severely exceeded due to the proximity to certain locations. In addition, for many hotels, the star standards we see are service evaluations, who will do the environmental assessment, how to do it, and what to measure are the issues before us. By comparing the environmental health index, The above problems can be assessed objectively and quantitatively. It can provide a reference quantitative standard for our environmental assessment. In actual use, we will

Seeing the change of the index is affected by the overall influence of several parameters, for example, the following figure is an example of an environmental health index. This is a 24-hour health index chart. The index shows that the highest is 91 at 7 o'clock and the lowest is 11:24. The environmental health index is 71. The higher the index, the better the environment, that is, the environment comparison around 7 am Good, but because the temperature throughout the day has been kept above 31 degrees, up to 34 degrees, the random feeling is relatively hot, which determines that the index will not be very high. Looking at the index, there are three relatively low points 1, 2, and 3. According to the correspondence of time, it can be found that when the index suddenly deteriorates, it is caused by the sudden increase in TVOC value. In the figure, it is at 6 and 2 When the position health index deteriorates due to a sudden rise in PM2.5

The 4 points in the 2.5 chart correspond to the deterioration of the 3 point index due to the 5 points in the PM 2.5 chart. From the chart, we can clearly see that the changes of PM2.5he TVOC in the environment have a more obvious impact on the index, while other parameters have a slower impact on the environment. This is because the environmental parameters are weighted differently in the index. As PM2.5 and TVOC are more direct and serious to humans, the weighting is only greater than the weighting number of temperature, humidity, and noise. The chart shows that the noise is in the 40dB-73dB range 24 hours a day, which can be said to be normal, so the monitoring index can comprehensively reflect the impact of the environment on the human body. The actual advantages and disadvantages of the environment can be quantified.