Record Display for the EPA National Library Catalog
RECORD NUMBER: 14 OF 732
|OLS Field Name||OLS Field Data|
|Main Title||Analysis of Commercial Nitric Oxide Protocol Gases: A Quality Assurance Audit.|
|Author||Hines, A. P. ;|
|CORP Author||Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.|
|Additional Subjects||Nitrogen oxide(NO) ; Quality assurance ; Air pollution monitors ; Gas analysis ; Supplying ; Certification ; Quality control ; Gas cylinders ; Performance standards ; Regulations ; US EPA ; Air samplers ; Calibrating ; Protocol Gases ; Standard reference materials ; Atmospheric Research and Exposure Assessment Laboratory|
EPA has initiated a national QA program on the suppliers of Protocol Gases. In this program, which will operate continuously, Protocol Gases are obtained and analyzed by EPA. The results of this EPA analysis are then compared to the Certificate of Analysis supplied with the Protocol Gas. Reported here is a comparison between the results obtained by EPA on eight Protocol-2 Gases containing approximately 40 ppm of NO in nitrogen and the concentrations provided by the suppliers of the Protocol Gases. EPA's and the suppliers' values agreed within 2% for seven of the eight Protocol-2 Gases; the eighth differed by 2.5%.