Gas Metrology Group

Audit of EPA Protocol Gas Suppliers — EPA Protocol gas mixture calibration standards are obtained by users to measure emissions of regulated gaseous species to ensure that they comply with US Environmental Protection Agency (EPA) … CCQM Activities in the Gas Analysis Working Group — NIST's Analytical Chemistry Division Gas Metrology group has participated in over 20 Consultative Committee for Amount of Substance-Metrology in Chemistry (CCQM) Gas Analysis Working Group … Chemical Metrology in Support of the US Hydrogen Infrastructure — Under the initiative "Enabling the Hydrogen Economy," NIST will apply its unique facilities and expertise in the multi-agency effort to make hydrogen fuel an effective economical and … Development of Standards for the World Metrology Organization, Global Atmosphere Watch Program — The presence of hydrocarbons in the atmosphere has become important to climate change assessment studies due to their role as precursors to ozone production, particulates, and oxidizing capacity. … Development of Standards in Support of Hydrogen-Fueled Vehicles — The Society of Automotive Engineers International (SAE) has proposed a Hydrogen Fuel Quality Specification Guideline. Several contaminants, in particular sulfur-containing compounds, have been … Establishing Measurement Traceability for Gaseous Mercury Emissions Monitoring — As a result of the environmental impact of mercury and the neurotoxic risk associated with trophic transfer of methyl mercury to humans, the reduction of mercury emissions from coal-fired electric … Fundamental Chemical Metrology — The Analytical Chemistry Division serves as the Nation's reference laboratory for chemical compositional measurements and standards to enhance U.S. industry's productivity and … Gas Standards in Support of NASA’s Space Shuttle Monitoring Program — The National Aeronautics and Space Administration (NASA) Kennedy Space Center requires accurate gas mixtures containing argon, helium, hydrogen, and oxygen in a balance of nitrogen to calibrate … International Collaborations to Improve the Accuracy of Gas Primary Standards — The Gas Metrology Group periodically participates in bilateral and multi-laboratory international comparisons. During the past two years comparisons have taken place for sulfur dioxide, ethanol, … International Comparisons — Because of NIST's role as the National Metrology Institute (NMI) in the U.S., the Analytical Chemistry Division's measurement capabilities must be benchmarked against the capabilities of … Measurements and Standards to Support Global Climate Change Studies — Much of the world's assessment and critical evaluation of currently available data on contributions to climate change comes from the Intergovernmental Panel on Climate Science (IPCC). IPCC was … New Gas Standard Reference Materials to Support the Automotive Industry — The American Industry/Government Emissions Research (AIGER) Consortium is working to facilitate the automobile industry meeting more stringent 2003 Federal Tier II and California LEV II emission … NIST Traceable Reference Material Program for Gas Standards — Two NIST programs provide calibration gas standards with NIST analyses and concentration value assignment: the Standard Reference Material (SRM) program and the NIST Traceable Reference Material … Reference Materials and Standards for Fossil Fuels, Electric Utility Emissions, and Coal Combustion By-Products — National Institute of Standards and Technology (NIST) fossil fuel Standard Reference Materials (SRMs) continue to be in high demand by the petroleum industry and the fossil fuel-based electric … The NIST Standard Reference Photometer for Ozone Measurement Traceability — The NIST Standard Reference Photometer (SRP), developed jointly with the U.S. Environmental Protection Agency (USEPA), has provided an infrastructure for the calibration and traceability of ozone … Traceable Calibration Gases: SRMs, NTRMS, and Protocol Gases — The Gas Metrology Group in the Analytical Chemistry Division is tasked with providing traceability in gas analysis for the U.S. This group works with regulators, gas suppliers, and international …

• International Comparison CCQM-K41: Hydrogen Sulfide in Nitrogen
• The Certification of a Nominal 20 m¿ mol/mol H2S/N-2 Standard Reference Material Using Two Independent Methods
• Feasibility of Preparing and Analyzing Gas Standards Containing Heavy Hydrocarbons (C10 – C16)