have been adjusted. Mean? Well, the limits of the levels of particles and gases have been lowered while warning of the risks involved in exceeding these new limits. Its fulfillment could save millions of lives. Pollutant 2005 2021 pm2.5 _ 10 µg / m3 5 µg / m3 pm10 _ 20 µg / m3 15 µg / m3 ozone - 60 µg / m3 nitrogen dioxide 40 µg / m3 10 µg / m3 sulfur dioxide 20 µg / m3 40 µg / m3 carbon monoxide - 4mg/ m3 the overall goal of the 2021 guidelines is to provide quantitative recommendations for air quality, expressed as concentrations of a number of key air pollutants that affect health. Exceeding the proposed new air quality levels is associated with significant public health risks.
These guidelines are not legally binding standards; however, they provide countries with an evidence-based tool that they can use to advance e commerce photo editing laws and policies . In addition, the new air quality guidelines can be a key component in supporting global air quality policies and the development of standards, clean air policies, and other tools for air quality management . Therefore, the ultimate goal is to provide guidance to help reduce the levels of air pollutants in order to reduce the global health problem resulting from exposure to air pollution. Examples of successful policies there are numerous examples of successful policies that reduce air pollution: industry: using clean technologies for industrial emissions .
Transport: substitution of electric transport for combustion, use of public transport, encourage the use of bicycles in cities. Urban planning: improving the energy efficiency of buildings and the structure of more sustainable cities . Energy and electricity generation: increased use of low-emission fuels and non-combustion renewable energy sources (solar, wind or hydroelectric). Municipal and agricultural waste management: waste reduction, separation, recycling and reuse or reprocessing strategies. Therefore,