CO2 in the air we breathe
Fresh air has a concentration of around 400 ppm of CO2 (measured in 2015 - highest value for approx. 15-20 million years). The concentration of the gas depends on:
- time of day and season of the year
- region
Occurrence and use of CO2
CO2 occurrence in the earth's various layers
- atmosphere
- hydrosphere (water)
- lithosphere (earth's crust and mantle)
- biosphere (living environment 60 km above and 5 km below the earth's surface)
The visualization of CO2
The concentration in the air is normally given in
- ppm (parts per million)
- vol.% (1,000 ppm corresponds to 0.1%)
The importance of air quality for humans
The CO2 concentration in indoor areas is deemed to be an essential indicator of suitable air quality.
Carbon dioxide is a gas that is poisonous for humans and, depending on the concentration in the air, affects their performance, their well-being and their ability to concentrate.
Even when there is a CO2 concentration as low as 1,000 ppm, most people feel the air is not good and the above-mentioned disorders occur.
The use of CO2
Do you like drinking sparkling mineral water?
Then you may be interested to know that CO2 does not just represent a threat. It is widely used in food, technical and other sectors.