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Annals of Occupational Hygiene Advance Access originally published online on February 2, 2005
Annals of Occupational Hygiene 2005 49(4):359-361; doi:10.1093/annhyg/meh109
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© 2005 British Occupational Hygiene Society Published by Oxford University Press;

Letter to the Editor

Comparison of Crystalline Silica ({alpha}-Quartz) Calibration Standards NIST-SRM 1878 and NIST-SRM 1878a by Fourier Transform Infrared Spectrophotometry

DAVE K. VERMA and DON S. SHAW

Occupational and Environmental Health Laboratory, McMaster University, 1200 Main Street West, Hamilton, Ontario L8N 3Z5, Canada

Received in final form 23 November 2004

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Comparing {alpha}-quartz calibration standards is important for understanding the differences among various quartz standards. This information permits valid comparisons of airborne silica concentration measurements quantified with different calibration standards. The recent paper by Chisholm (2005)Go on comparison of quartz standards HSE A9950 and NIST-SRM 1878 for X-ray diffraction (XRD) analysis is an important contribution to the literature. In his paper, Chisholm has reviewed earlier comparisons (Jeyaratnam and Nagar, 1993Go; Verma and Shaw, 2001Go; Kauffer et al., 2002Go) and provides insights into the differences observed.

In our study (Verma and Shaw, . . . [Full Text of this Article]


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P. Stacey, E. Kauffer, J.-C. Moulut, C. Dion, M. Beauparlant, P. Fernandez, R. Key-Schwartz, B. Friede, and D. Wake
An International Comparison of the Crystallinity of Calibration Materials for the Analysis of Respirable {alpha}-Quartz Using X-Ray Diffraction and a Comparison with Results from the Infrared KBr Disc Method
Ann. Hyg., August 1, 2009; 53(6): 639 - 649.
[Abstract] [Full Text] [PDF]