Hostname: page-component-6766d58669-nf276 Total loading time: 0 Render date: 2026-05-25T04:41:24.933Z Has data issue: false hasContentIssue false

Certification of Standard Reference Material 1879b respirable cristobalite

Published online by Cambridge University Press:  27 July 2018

D. R. Black*
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899
M. H. Mendenhall
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899
P. S. Whitfield
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
C. M. Brown
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899
A. Henins
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899
J. J. Filliben
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899
J. P. Cline
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899
*
a)Author to whom correspondence should be addressed. Electronic mail: david.black@nist.gov
Get access

Abstract

The National Institute of Standards and Technology (NIST) certifies a suite of Standard Reference Materials (SRMs) to address specific aspects of the performance of X-ray powder diffraction instruments. This report describes SRM 1879b, the third generation of this powder diffraction SRM. SRM 1879b is intended for use in the preparation of calibration standards for the quantitative analyses of cristobalite by X-ray powder diffraction in accordance with National Institute for Occupational Safety and Health (NIOSH) Analytical Method 7500, or equivalent. A unit of SRM 1879b consists of approximately 5 g of cristobalite powder bottled in an argon atmosphere. It is certified with respect to crystalline phase purity, or amorphous phase content, and lattice parameter. Neutron powder diffraction, both time-of-flight and constant wavelength, was used to certify the phase purity using SRM 676a as an internal standard. A NIST-built diffractometer, incorporating many advanced design features was used for certification measurements for lattice parameters.

Information

Type
Technical Article
Copyright
Copyright © International Centre for Diffraction Data 2018 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable