State and Federal Standards for Mobile-Source Emissions (2006)

Chapter: Appendix B Acronyms and Names Used for Classifying Organic Compounds

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Previous Chapter: Appendix A Biographical Information on the Committee on State Practices in Setting Mobile Source Emissions Standards
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Suggested Citation: "Appendix B Acronyms and Names Used for Classifying Organic Compounds." National Research Council. 2006. State and Federal Standards for Mobile-Source Emissions. Washington, DC: The National Academies Press. doi: 10.17226/11586.
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Appendix B
Acronyms and Names Used for Classifying Organic Compounds

Common Abbreviation

Full Name

Definition

VOC1

Volatile organic compounds

Organic compounds that are found in the gas phase at ambient conditions. Might not include methane.

ROG

Reactive organic gases

Organic compounds that are assumed to be reactive at urban (and possibly regional) scales. By definition, taken to be those organic compounds that are regulated because they lead to ozone formation. Does not include methane. The term is used predominantly in California.

NMHC

Nonmethane hydrocarbons

All hydrocarbons except methane; sometimes used to denote ROG.

NMOC

Nonmethane organic compounds

Organic compounds other than methane.

RHC

Reactive hydrocarbons

All reactive hydrocarbons; also used to denote ROG.

THC

Total hydrocarbons

All hydrocarbons, sometimes used to denote VOC.

OMHCE

Organic material hydrocarbon equivalent

Organic compound mass minus oxygen mass.

TOG

Total organic gases

Used interchangeably with VOC.

1Unless noted otherwise, HC is the term used in this report to represent the general class of gaseous organic compounds.

Source: NRC 1999.
Page 325 Cite Bookmark
Suggested Citation: "Appendix B Acronyms and Names Used for Classifying Organic Compounds." National Research Council. 2006. State and Federal Standards for Mobile-Source Emissions. Washington, DC: The National Academies Press. doi: 10.17226/11586.
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