First, the concept Common expressions HC: total hydrocarbons, including alkanes, olefins, aromatics (alkynes seem to be rarely considered) NMHC: Non-methane total hydrocarbons, total hydrocarbons excluding methane. TOG: Total organic gas, including total hydrocarbons, and also non-hydrocarbon organics. NMOG: Non-methane organic gas, TOG minus methane. Definition 1) VOC is a volatile organic compound The definition of […]
