Certified reference materials for continuous emission monitoring

Journal Article · Thu Jul 01 04:00:00 EDT 1982 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1982.10465450· OSTI ID:5138702

Hughes, E E

The Certified Reference Material Program for gaseous standards jointly developed by the National Bureau of Standards and the Environmental Protection Agency is intended to increase the supply of accurate gas standards for environment monitoring. The gaseous Certified Reference Materials (CRM) are gas mixtures prepared and analyzed by specialty gas manufacturers according to guidelines set forth by NBS and the EPA. Certified Reference Materials are prepared at concentrations within +/-1% relative of existing gaseous Standard Reference Materials (SRM) and are analyzed by comparison to SRM. Samples from each lot are analyzed by an independent laboratory to confirm the concentration claimed by the manufacturer. Analyses performed by the manufacturer at stated time intervals after preparation are used to confirm the stability of each sample and the homogeneity of each batch. All data obtained by the manufacturer and the independent laboratory are reviewed by NBS to assure the reliability of the product. Experimental batches of CRM prepared by two different manufacturers have been evaluated. These CRM, 50 ppm of carbon monoxide in nitrogen, were found to be stable and homogeneous and the concentrations claimed by the manufacturer were confirmed by the independent laboratory. Data from these sets will be presented, demonstrating the rigorous treatment required of the manufacturer and the independent laboratories. Future CRM will include nitric oxide in nitrogen, sulfur dioxide in nitrogen, and propane in air.

• Research Organization: National Bureau of Standards, Washington, D.C.
• OSTI ID: 5138702
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 32:7; ISSN JPCAA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL MONITORING
ALKANES
CALIBRATION STANDARDS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
HYDROCARBONS
MONITORING
NATIONAL ORGANIZATIONS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PROPANE
STANDARDS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
US DOC
US EPA
US NBS
US ORGANIZATIONS