User:Drkrupp/Ozone monitor

The original method for ozone monitoring in the United States is known as the Federal Reference Method (FRM). The FRM, which was predominantly used in the 1970s and 1980s, relies on the use of ethylene chemiluminescence. It was later discovered that the results from this method could become skewed due to water vapor caused by changes in humidity. This method would eventually be replaced with the Federal Equivalent Method (FEM) which uses ultraviolet absorption. THIS IS TO BE CHANGED IN THE ARTICLE TO THE SECTION BELOW

Federal Reference Method
The Federal Reference Method (FRM) was the original method of measuring ozone concentration in the air, being used throughout the United States around the 1970s and 1980s. It uses what is known as gas-phase ethylene-chemiluminescence or ET-CL. The ozone content is measured based on the reaction when the air around the monitor reacts with the ethylene reactant gas within the monitor. As of 2015, the EPA added an additional format to the FRM using nitric oxide chemiluminescence or NO-CL. It functions in a very similar manner to that of the ET-CL format except it uses nitric oxide instead of ethylene gas. The FRM has, for the most part, been phased out as a method of ozone detection due water vapor causing skewed results and has been replace with the Federal Equivalent Method which uses ultraviolet absorption. However, the FRM it still used occasionally as the Federal Equivalent Method can be skewed by concentration of other pollutants such as mercury, sulfur dioxide, carbon dioxide, VOCs, and others.