Studies say diesel exhaust gas is simply filtered or more likely to cause lung problems

diesel engine exhaust pollution is a widespread concern, people are exploring through exhaust filtering and other ways to reduce its harm. But a new study says that simply filtering out tiny particles from the exhaust gas is more likely to cause problems with the lungs of some allergy sufferers after inhaling the gas.
Researchers at the University of British Columbia and other institutions in Canada asked 14 allergy volunteers to take part in the trial, which involved inhaling air containing allergens, air containing allergens and diesel exhaust, air containing allergens and diesel exhaust, and air containing allergens and diesel exhaust after filtering out tiny particles, according to a new study published in the American Journal of Respiratory and Intensive Care Medicine. It was found that diesel exhaust, which filtered out tiny particles, was more likely to cause allergy-related lung problems in the subjects.
the study used HEPA (high-efficiency particle filter) and static electricity to filter the tiny particles in the exhaust gas of diesel engines, which is also commonly used in air purification equipment.
the study showed that nitrogen dioxide levels increased, although the number of tiny particles in the exhaust gas of the filtered diesel engine was significantly reduced. Nitrogen dioxide is a known contaminant that impairs lung function, such as children's asthma.
Chris Karlsten, a professor at the University of British Columbia, said they initially wanted to explore whether filtering out tiny particles in diesel exhaust could reduce the health risks of exhaust, but the results suggest that simply filtering out tiny particles in diesel exhaust can be more harmful to people who are allergic to their physique. Therefore, the treatment of diesel engine exhaust gas needs to consider a more comprehensive solution. (Source: Xinhua News Agency)
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