Compound pollution is to point to by a variety of sources of a variety of atmospheric pollutant under certain atmospheric conditions (temperature, humidity, illumination, etc.) in a variety of interface interaction, mutual coupling between the complex system of atmospheric pollution, characterized by increased atmospheric oxidizing species, elevated levels of fine particulate matter atmospheric visibility dropped significantly, and so on. With rapid growth of the Chinese economy and the accelerating of urbanization, urban and regional atmospheric environmental quality in rapid deterioration, first to coal as main energy generated by the high concentration of sulfur dioxide and particulate matter, is after the rapid increase of motor vehicle emissions of nitrogen oxides and volatile organic compounds, these pollutants as well as by a pollutant in complex reaction in the atmosphere generated by the secondary pollutants, interact with the weather, the climate system and influence of forming high levels of pollution, and in a wide range of regional transport and reaction, eventually results in the decrease of atmospheric visibility, gray haze phenomena occur frequently, The formation of regional air pollution complex. Compound pollution of atmosphere under the surrounding of physical and chemical process and control technology of important scientific problems, reveal the key of air pollution by composite key atmospheric chemical process and physical process, clarify the causes of air pollution by composite, to establish theoretical system of air pollution by composite formation, development of detection, source of air pollution by composite new theory and new methods of parsing is the main research direction in this field. The study of these contents will provide more and stronger theoretical basis and scientific basis for solving the global air pollution problem and even the climate problem.
Air pollution has complex and extensive adverse effects on human health, which has become a frontier issue in global social development. The latest authoritative report identifies air pollution as a major risk factor for the global burden of disease (GBD), resulting in a disability adjusted life year (DALYs) of 3.1%. Air pollution is a complex mixture of particulate matter, heavy metal elements and volatile organic compounds that permeates every aspect of human life. Based on the epidemiology and pathophysiology of numerous studies show that atmospheric pollution, especially in inhalable aerodynamic diameter less than 10 microns (PM10) and 2.5 microns (PM2.5) particles, increase the risk of respiratory disease (such as asthma, chronic obstructive pulmonary disease (copd), lung cancer) and heart cerebrovascular disease (such as myocardial infarction, heart failure, stroke). Older subjects, pregnant women, infants and people with similar diseases are more vulnerable to the adverse effects of air pollution. Therefore, it is of great practical significance to actively carry out large-scale research work and comprehensively and deeply analyze the impact of air pollution on human health to promote the atmospheric environmental protection in China and improve the health level of residents.