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Appendix B ACRONYMS AND NAMES USED FOR CLASSIFYING ORGANIC COMPOUNDS Common Abbreviation Vocl ROG NMHC NMOC Full Name Volatile organic compound Reactive organic gas Nonmethane hydrocarbon Nonmethane organic compound Definition Organic compounds that are found in the gas phase at ambient conditions. Might not include methane. Organic compounds that are assumed to be reactive at urban (and possibly regional) scales. Definitionally, taken as those organic compounds that are regulated because they lead to ozone formation. Does not include methane. The term is predominantly used in California. All hydrocarbons except methane; sometimes used to denote ROG. Organic compounds other than methane 238
APPEND/X B 239 Commo??, Abbreviation, RHC THC OMHCE - Full Name Reactive hydrocarbon Total hydrocarbon Organic material hydrocarbon equivalent TOG Total organic gas Definition AD reactive hydrocarbons; also used to denote ROG. All hydrocarbons, sometimes used to denote VOC. Organic compound mass minus oxygen mass. Used interchangeably with VOC. Sunless noted otherwise, VOC's is the term used in this report to represent the general class of gaseous organic compounds. Source: NRC 1999.
