Measurements clearly underestimate the amount of harmful substances in fine matter, as an international research team under Swiss management in a new study demonstrates. Everyone who has fed aviation over the years has a higher risk of different diseases.
The World Health Organization (WHO) estimates that more than six million deaths are caused every year by increased exposure to fine substance. There are very reactive components in fine matter, as the University of Basel wrote in a message about the study on Monday.
These so -called oxygen radicals can react in the airways with biomolecules and in the cells and thus damage, which in turn can cause inflammatory reactions and have an impact on the entire body.
Measurements are too slow
It is precisely these components, according to the “Science Advances” journal within a few minutes or hours. With conventional fine dust measurements, the particles are usually a few days to weeks old. Because the fine dust particles are first collected on filters and are only analyzed later.
60 to 99 percent disappears within a few minutes
For the study, the research team has developed a new method to measure fine dust in a few seconds. The particles are collected directly from the air in a liquid. There they come into contact with different chemicals. The oxygen radicals respond in this solution and create quantifiable fluorescence signals. The measurements with the help of the new method showed: 60 to 99 percent of the oxygen radicals disappear within a few minutes or hours.
Source: Krone
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