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George C Rhoderick (Assoc)

George's employment at NIST began with the measurement of hydrocarbons methane and propane in gas mixtures and SRMs. This activity evolved into the preparation of gravimetric standards used for the measurement of these same analytes in gas matrices. He has been the project manager for the VOC gas standards program for 30+ years and has developed standards to assist those making measurements in urban and ambient atmospheres. He has developed and certified several multicomponent SRMs containing VOCs and Hydrocarbons. He has authored or co-authored more than 70 peer-reviewed publications describing these activities. George is currently the project manager for the development of ambient air SRMs containing certified amounts of carbon dioxide, methane and nitrous oxide, and the development of an SRM for ambient level halocarbons. He is also working closely with other scientist from several NMIs in conjunction with the WMO/GAW to develop, certify and provide gas standards of VOCs for their air monitoring programs, and leads a program as the Central Calibration Laboratory for monoterepene standards for the World Metrological Organization.


  • Bronze Medal - 2004
  • National Partnership for Reinventing Government - 1999

Membership and Professional Activities:

  • ASTM Committee D03.07 on Gaseous Fuels : Analysis of Chemical Composition of Gaseous Fuels
  • Participant/Member CCQM GAWG
  • Member of CCQM/GAWG subcommittee for WMO/GAW-VOC standards 


Final Report of Key Comparison CCQM-K4 (Ethanol in Air)

M J. Milton, C Brookes, A Marschal, Franklin R. Guenther, George C. Rhoderick, D E. Leer, L W. Zhen, C Takahashi, E Deak, Y A. Kustikov
This key comparison involved primary standards of ethanol in air maintained at eight laboratories. The nominal amount fraction of the standards used for the

Stability of gaseous volatile organic compounds contained in gas cylinders with different internal wall treatments

George C. Rhoderick, Christina Cecelski, Walter R. Miller Jr., David Worton, Sergi Moreno, Paul Brewer, Joele Viallon, Faraz Idrees, Philippe Moussay, Yong D. Kim, Dal H. Kim, Sangil Lee, Annarita Baldan, Jianrong Li
Volatile organic compounds (VOCs) are a group of gas-phase compounds present in the atmosphere that affect air quality and Earth's climate. Halocarbons, a

CCQM K121 – Monoterpenes in Nitrogen at 2.5 nmol mol-1 Final Report

Christina E. Cecelski, George C. Rhoderick, Joseph T. Hodges, Antonio M. Possolo, Cassie A. Goodman, Yong D. Kim, Dal H. Kim, Sangil Lee, Nicholas Allen, Marivon Corbel, David Worton, Richard Brown, Paul Brewer
The growing awareness of climate change, and continuing concerns regarding tropospheric and stratospheric chemistry, will require future measurements and
Created May 3, 2019, Updated June 15, 2021