The high degree of atmospheric pollution is a global issue that has recently become more important and will only become worse. Health, living things, vegetation, water, soil, and structures are all directly impacted by air pollution. Furthermore, it travels long distances with ease. A few air pollutants affect the climate, harm the ozone layer’s protective properties, and increase the greenhouse effect. Therefore, it is crucial to safeguard the air by taking steps to ensure that it is of the highest quality. The formation of air quality policies in the United States of America and the European Union were examined in this article, along with their implementation and a comparison of their respective states’ air quality regulations. Although air quality has significantly improved in the U.S. and EU, control of air quality in both countries still needs a more comprehensive and ambitious approach.
Indoor air quality (IAQ) has recently come to light as a significant issue that needs more attention as even more studies are exposed to it. The study looks at current practices for indoor air quality in various European and American countries, focusing on the actions taken in many of them in response to WHO guidelines. While highlighting the importance of energy-saving measures, the EU and the US also promote the creation of healthier indoor environments and a focused worldwide Indoor air quality plan. Many European Union (EU) and US nations now have IAQ regulations included in their legislation, while many states do not currently have any reference-specific restrictions on these matters.
The study investigates the scientific publications, the WHO recommendations, the norms and guidelines such as ISO, CEN, and UNI, as well as other standards such as limit or reference values for outdoor air, to gain a better understanding of the current framework. Indoor air pollution has long been a source of worry for legislators at the global level, and more and more governments are tackling the issue by putting greater emphasis on addressing the need for health and strategic policies. The Commission has frequently explored the value of evaluating IAQ, the extent to which it affects health, and potential recommendations for new policies.
The MERV 8-13 and EN 1822 specifications for the EPA, HEPA, and ULPA filter classes are upheld by ISO 29463. One of the evaluation criteria for the new ISO standard is particle arrestance at MPPS (most penetrating particle size). The smallest particle size at which an air filter exhibits arrestance is known as MPPS. A device’s arrestance is used to gauge how well it can remove airborne artificial dust. The restraining factor is how well an air filter removes larger debris like dust, dirt, lint, and hair.
However, most industrial standards require testing at 0.3 microns because of its reputation as the most penetrating particle size (MPPS). However, most industrial standards require testing at 0.3 microns because of its reputation as the most penetrating particle size (MPPS). In other words, it is difficult to collect particles between 0.2 and 0.3, but it is easier to collect larger and smaller particles.
