Ppmv
Ppmv (Parts Per Million by Volume)
Ppmv (Parts Per Million by Volume), pronounced as /ˈpiːpiːɛmˈviː/, is a unit of measurement used in air quality monitoring, environmental science, and chemistry. It is used to express the concentration of a certain substance in a mixture or solution. The term originates from the field of chemistry, where it is often used to denote the concentration of small amounts of one substance in another.
Etymology
The term "ppmv" is an acronym derived from the phrase "parts per million by volume". The concept of "parts per million" is a common method of expressing low concentrations in scientific calculations. The addition of "by volume" specifies that the measurement is a ratio of the volume of the substance to the total volume of the mixture or solution.
Usage
In environmental science, ppmv is often used to measure the concentration of pollutants in the air, such as carbon dioxide (CO2), nitrogen dioxide (NO2), and sulfur dioxide (SO2). It is also used in the field of chemistry to measure the concentration of a solute in a solution.
Related Terms
- PPB (Parts Per Billion)
- PPMW (Parts Per Million by Weight)
- Concentration
- Air Quality
- Environmental Science
- Chemistry
External links
- Medical encyclopedia article on Ppmv
- Wikipedia's article - Ppmv
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