The following is the conversion relationship between some ozone concentration units:
1. mg/L (milligrams per liter) and mg/m³ (milligrams per cubic meter):
In air, 1 mg/L = 1 mg/m³.
2. mg/L (milligrams per liter) and ppm (volume fraction, parts per million):
In water, 1 mg/L = 1 ppm.
In air, 1 mg/m³ ≈ 2.14 ppm, but the approximation 1 mg/m³ = 1 ppm is usually used.
3. ppm and ppb (volume fraction, parts per billion):
1 ppm = 1000 ppb.
4. ppm (volume fraction) and % (wt, weight percentage):
Conversion between these two units requires knowledge of the density of ozone and the density of the reference substance. However, a common approximation is:
1 wt% ≈ 14.3 mg/L or ≈ 7.1 mg/m³ (assuming the density of ozone is 2.14 g/L).
5. ppm (volume fraction) and % (vol, volume percentage):
1% (vol) = 10,000 ppm.
Please note that these conversions may have slight errors as they are based on some assumptions and averages. Temperature, pressure and the specific properties of the substance should be taken into account when making precise calculations.
