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NIOSH Reports

NIOSH Method 7500: Abell, M. T., Dollberg, D. D., Palassis, J. and Lange, B. A. (1984) "Measurement of Respirable Crystalline Silica Using X-ray Powder Diffraction." Manual of Analytical Methods, 3rd. Ed. P. M. Miller, Ed. DHHS Publication 84- 100. (Filter)

NIOSH Method 7500 (revised): (1989) "Measurement of Respirable Crystalline Silica Using X-ray Powder Diffraction." (Filter)

NIOSH Method 7501 (1985) "Silica, Amorphous" (Filter)

Anderson, C. C. (1983) "Collaborative Tests of Two Methods for Determining Free Silica in Airborne Dust." Final Report, Contract No. 210-79-0059. NIOSH DHHS Pub. 83-124, Cincinnati, OH. (Filter)

Palassis, J and Jones, W. G. (1991) "Particle Size Effects on the Accuracy of Respirable Silica Analysis by X-ray Powder Diffraction." (Particles)

Peters, E. T. (1976) "Evaluation of the NIOSH X-ray Diffraction Method for the Determination of Free Silica in Respirable Dust." Contract No. CDC-99-74-51., NIOSH. (Evaluation)

Philips Electronics Instruments (1982) "Crystalline Silica Analysis by Automated Powder Diffractometry at the OSHA Analytical Laboratory." Norelco Reporter, v29[2], 40-44.

(1974) "Free Silica (Quartz, Cristobalite, Tridymite) in Atmospheric Dust," in NIOSH Manual of Analytical Methods. (Filter)

(1986) "Occupational Respiratory Diseases." J. Merchant, Ed. DHHS Pub. No. 86-102, 219-223.

(1974) "Occupational Exposure to Crystalline Silica, Criteria for a Recommended Standard." HEW Publication (NIOSH) 75-120. (Toxicology)

Taylor, D. G. and Crable, J. V., Eds. "NIOSH Manual of Analytical Methods." NIOSH Publications Nos. 77-157 (vols. 1-3), 18-175 (Vol. 4), and 79-141 (Vol. 5). (Filter)

Anderson, D. W., Gebhardt, R. E., Trader, C. W. and Dobson, L. A. (1976) "Improved Quantitative X-ray Diffraction Determination of Respirable Free Silica." in "Proceedings of a Round Table Discussion on Thermal Analysis Techniques." DHEW (NIOSH) 76-173. (Filter)


DOL/OSHA/SLC Reports

Thomas, E. V. and Rose, M. C. (1983) "X-ray Documentation Manual." Occupational Safety and Health Administration, Salt Lake City Analytical Laboratory. (Filter)

"Standard Operating Procedures - X-ray Diffraction." Occupational Safety and Health Administration, Salt Lake City Analytical Laboratory. (Filter)

Giles, P. and Cee, R. (19__) "OSHA Laboratory Quartz Detection Limit Study." Occupational Safety and Health Administration, Salt Lake City Analytical Laboratory. (Evaluation)

Groff, J. H. (1980) Memorandum to PAT participants, May 7, 1980, National Institute for Occupational Safety and Health, Cincinnati, OH. (Evaluation)

(1989) OSHA "Quartz and Cristobalite in Workplace Atmospheres" Method Number ID- 142. in OSHA Methods Manual, 2nd. Ed. ACGIH, Cincinnati, OH. Publication No. 4545. (revision of earlier 1981 version). (Filter)


U.S. Bureau of Mines

Goldberg, S. A. and Jacobson, M. (1972) "Bureau of Mines Procedure for Evaluating Quartz Content of Respirable Coal Mine Dust." USBM IC 8545, pp10. (Filter)

Freedman, R. W. (1972) "Analysis of Free Silica in Respirable Dust." USBM IC 8521, pp8. (Filter)

Thatcher, J. W. (1975) "The Determination of Free Silica in Airborne Dust Collected on Membrane Filters." USDI MESA IR 1021. (Filter)

Huggins, C. W., Shedd, IK. B., Snyder, J. G., Lang, H. W. and Tomb, T. F. (1985) "Interagency Comparison of Respirable Quartz Analysis." U. S. Bureau of Mines, Vol. OFR111-85, 67-__. (Evaluation)

Huggins, C. W., Johnson, S. N., Segreti, J. M. and Snyder, J. G. (1985) "Determination of Alpha Quartz Particle Distribution in Respirable Coal Mine Dust Samples and Reference Standards." U. S. Bureau of Mines, Rept. Invest. 8975, pp11. (Particles)

McKee, C., Renault, J. and Barker, J. (1990) "Quantitative Analysis of Quartz in Perlite by X-ray Diffraction." Society of Mining Engineering Meeting, Salt Lake City, New Mexico Bureau of Mines and Natural Resources, Socorro, NM 87801. (Bulk Anal.)


Ministry of Labour Reports (Canada)

(1985) "Code for the Determination of Crystalline Silica in Bulk Samples." Ministry of Labour, Occupational Health and Safety Division, Toronto.

Gordon, R. L., Griffen, O. G. and Nagelschmidt, G. (1952) "The Determination of Quartz By X-ray Diffraction." Safety in Mines Research Estab. Res. Rpt. No. 52, pp25. (Bulk Anal.)

Gordon, R. L. and Harris, G. W. (1956) "Geiger-Muller Counter Equipment for Quantitative X-ray Diffraction Analysis of Powders." Res. Rept. No. 138, Safety in Mines Res. Establ., Sheffield, Eng. (Bulk Anal.)

Griffen, O. G. (1954) "A New Internal Standard for the Quantitative X-ray Analysis of Shales and Mine Dusts." Safety in Mines Research Estab. Res. Rpt. No. 101, HMSO, London. (Bulk Anal.)

Knight, G. (1975) "Detailed Studies on the Assessment of Quartz by X-ray Diffraction in Airborne Dust Samples and their Collection in Hard Rock Mines." Canada Centre for Mineral and Energy Technology, Mining Research Laboratory, Elliot Lake, Report MRP/MRL 75-17 (TR). (Evaluation)

Knight, G., Stefanich, W. and Ireland, G. (1971) "Laboratory Calibration of a Technique for Determination of Respirable Quartz in Mine Air using Personal Samplers and X-ray Diffraction." Internal Report MR71/33-ID, Department of Energy, Mines, and Resources, Canada. (Calibration)

Machacek, H. (19__) "Quantitative X-ray Determination of Quartz and Pyrite in Dusts." Technical Bulletin TB123, Mineral Sciences Div., Dept. of Energy, Mines, and Resources, Ottawa, Canada." (Filter)


HSE Reports (Great Britain)

MDHS 51 (1986) "Quartz in Respirable Airborne Dusts" (filter)

MDHS 51/2 (1988) "Quartz in Respirable Airborne Dusts: Laboratory Method Using X- ray Diffraction (Direct Method)." (Filter)


IARC Reports

IARC 1987, "Silica and Some Silicates" IARC Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans, v42, 1-144. (Toxicology)

Miscellaneous Reports

Bumsted, H. E., Nies, J. D. and Clark, H. E. (19__) Applications Note No. 70, "Free- Silica Determination with an Automated X-ray Diffractometer." Siemens-Allis. (Filter)

Corn, M., Zeger, S., Hall, T. A. and Law, C. C. (19__) "Report to AMC on Free Silica Content of Mine Dust - Appendix D: Anaytical Methodology" Johns Hopkins University. (Filter)

Murray, H. M. and Merkl, R. S. (19__) "Analytical Method for Determination of Free Silica." Clay Minerals Laboratory, Department of Geology, Indiana University. (Filter)

Clayton (19__) "Free Silica (Crystalline Quartz, Cristobalite, Tridymite)" Clayton Environmental Consultants, Inc. (Filter)

Little (1976) "Evaluation of the NIOSH X-ray Diffraction Method for the Determination of Free Silica in Respirable Dust." Report from A. D. Little, Inc. (Filter)

ITT (1983) "Preliminary Evaluation of Direct Free Silica Analysis on PVC Membranes by X-ray Diffraction." Illinois Institute of Technology Research Institute, Final Report, Task 8 Phase 2, Prepared for NIOSH, Contract No. 210-81-7108. (Filter)


Journal References

Abell, M. T. and Dollberg, D. D. (1978) "A Quantitative Analysis Software Package for Use with the APD3500." Norelco Reporter v25, 21-25. (Automation)

Abell, M. T., Dollberg, D. D. and Crable, J. V. (1981a) "Quantitative Analysis of Dust Samples from Occupational Environments Using Computer-Automated X-ray Diffraction." Adv. X-ray Anal. v24, 37-48. (Automation)

Abell, M. T., Dollberg, D. D., Lange, B. A., Hornung, R. W. and Haartz, J. C. (1981b) "Absorption Corrections in X-ray Diffraction Dust Analysis; Procedures Employing Silver Filters." in "Electron Microscopy and X-ray Applications." Vol. 2, p115, Ann Arbor Science Publications, Inc. (Filter)

Alexander, L. E. and Klug, H. P. (1948) "Basic Aspects of X-ray Absorption in Quantitative Diffraction Analysis of Powder Mixtures." Anal. Chem. v20, 886- 894, reprinted Powd. Diff. v4, n2, 66-99. (Theory)

*Alexander, L. E., Klug, H. P. and Kammer, E. (1948) "Statistical Factors Affecting the Intensity of X-rays Diffracted by Crystalline Powders." J. Appl. Phys. v19, 742- 753. (Theory)

Allen, G., Samimi, B., Ziskind, M. and Weill, H. (1974) "X-ray Diffraction Determination of -Quartz in Respirable and Total Dust Samples from Sand- Blasting Operations." Amer. Ind. Hyg. Assoc. J. v35, 711-717. (Filter)

Altree-Williams, S. (1977) "Quantitative X-ray Diffractometry on Milligram Samples Prepared on Silver Filters." Anal. Chem. v49, 429-432. (Filter)

Altree-Williams, S. (1978) "Calculated X-ray Diffraction Data and Quantitative X-ray Diffractometry." Anal. Chem. v50, 1272-1276. (Theory)

Altree-Williams, S., Lee, J. and Mezin, N. (1977) "Quantitative X-ray Diffractometry on Respirable Dust Collected on Nuclepore Filters." Ann. Occup. Hyg. v20, 109-126. (Filter)

Altree-Williams, S., Byrnes, J. G. and Norman, M. B. (1981a) "Reference Material for the Quantitation of alpha-Quartz in Respirable Dust by X-ray Diffraction." Ann. Occup. Hyg. v24, 347-356. (Calibration)

Altree-Williams, S., Byrnes, J. G. and Jordan, B. (1981b) "Amorphous Surface and Quantitative X-ray Powder Diffractometry." Analyst, v106, 69-75. (Amorphous)

Anderson, P. L. (1975) "Free Silica Analysis of Environmental Samples - A Critical Literature Review." Amer. Ind. Hyg. Assoc. J. v36, 767-776. (Review)

Babyak, B. S. and Kaschak, B. S. (1975, 1978) "Free Silica - A Bibliography." Industrial Health Foundation, Inc., 5231 Centre Ave., Pittsburgh, PA. (Review)

Bartley, D. L. and Doemeny, L. J. (1986) "Critique of 1985 ACGIH Report on Particle Size-Selective Sampling in the Workplace," Amer. Ind. Hyg. Assoc. J. v47, 443. (Particles)

Bayliss, P. (1986) "Quantitative Analysis of Sedimentary Minerals by Powder X-ray Diffraction." Powd. Diff. v1[2], 37-39. (Bulk Anal.)

Bish, D. L. and Howard, S. A. (1988) "Quantitative Phase Analysis Using the Rietveld Method." J. Appl. Cryst. v21. 86-91. (Bulk Anal.)

Bish, D. L. and Reynolds, R. C. (1989) "Sample Preparation for X-ray Diffraction." in Modern Powder Diffraction, Bish, D. L. and Post, J. E. Eds., Mineralogical Society of America, Washington, DC. (Sample Prep.)

Blount, A. (1989) Personal Communication to P. A. Carr, Rutgers University, NJ. (Filter)

Bradley, A. A. (1967) "The Determination of Quartz in Very Small Samples by an X-ray Technique." J. Sci. Instr. v44, 287-288. (Bulk Anal.)

Brindley, G. W. (1945) "The Effect of Grain or Particle Size on X-ray Reflections from Mixed Powders or Alloys." Phil. Mag. v36, 347-369. (Particles)

Brindley, G. W. (1980) "Quantitative X-ray Mineral Analysis of Clays." Chapter 5 in Crystal Structures of Clay Minerals and Their X-ray Identification. Brindley, G. W. and Brown, G., Eds., Mineralogical Society, London, UK. (Particles)

Brindley, G. W. and Udagawa, S. (1959) "Sources of Errors in the X-ray Determination of Quartz." J. Am. Ceram. Soc. v42, 643-644. (Particles)

Bumsted, H. E. (1973) "Determination of Alpha-Quartz in the Respirable Portion of Airborne Particulates by X-ray Diffraction." Amer. Ind. Hyg. Assoc. J. v34, 150- 158. (Filter)

Bumsted, H. E. (19__) "Free Silica Determination with an Automated X-ray Diffractometer." presented at the Amer. Ind. Hyg. Conf. Houston, TX. (Automation)

Calvert, L. D., Sirianni, A. F., Gainsford, G. J. and Hubbard, C. R. (1982) "A Comparison of Methods for Reducing Preferred Orientation." Adv. X-ray Anal. v26, 105-110. (Sample Prep.)

Carsey, T. (1987) "LISA: A New Aerosol Generation System for Sampler Evaluation." Amer. Ind. Hyg. Assoc. J. v48, 710-717. (Sampling)

Carter, J. R., Hatcher, M. T. and Di Carlo, L. (1987) "Quantitative Analysis of Quartz and Cristobalite in Bentonite Clay-Based Products by X-ray Diffraction." Anal. Chem. v59, n3, 513-519. (Bulk Anal.)

Casciani, G and Ripanucci, G. (1984) "Optimization of Environmental Sampling of Quartz Containing Dust in Relation to the Limits and Nonlinearity of the Diffractometric Response." Med. Lav. v75, 200-206. (Filter)

Chung, F. H. (1974a) "Quantitative Interpretation of X-ray Diffraction Patterns of Mixtures. I. Matrix-Flushing Method for Quantitative Multicomponent Analysis." J. Appl. Cryst. v7, 519-525. (Theory)

Chung, F. H. (1974b) "Quantitative Interpretation of X-ray Diffraction Patterns of Mixtures. II. Adiabatic Principle of X-ray Diffraction Analysis of Mixtures." J. Appl. Cryst. v7, 526-531. (Theory)

Chung, F. H. (1975) "Quantitative Interpretation of X-ray Diffraction Patterns. III. Simultaneous Determination of a Set of Reference Intensities." J. Appl. Cryst. v8, 17-19. (Theory)

Chung, F. H. (1982) "Synthesis and Analysis of Crystalline Silica" Environ. Sci. Technol. v16, n11, 796-799. (Calibration)

Chung, F. H. (1978) "Imaging and Analysis of Airborne Dust for Silica" Environ. Sci. Technol. v12, n10, 1208-1210. (Evaluation)

Clark, G. L. and Reynolds, D. H. (1936) "Quantitative Analysis of Mine Dusts: An X-ray Diffraction Method." Ind. Eng. Chem. (Anal. Ed.) v8. 36-42. (Bulk Anal.)

Clelland, D. W., Cumming, W. M. and Ritchie, P. D. (1952) "Physico-Chemical Studies on Dusts. I. A High Solubility Layer on Siliceous Dust Surfaces." J. Appl. Chem. v2, 31-41. (Amorphous)

Clelland, D. W., Cumming, W. M. and Ritchie, P. D. (1952) "Physico-Chemical Studies on Dusts. II. Nature and Regeneration of the High Solubility Layer on Siliceous Dusts." J. Appl. Chem. v2, 42-48. (Amorphous)

Cline, J. P. (1986) "A Study of Quantitative Analysis by X-ray Powder Diffraction." PhD Thesis, Alfred University. (Theory)

Cline, J. P. and Snyder, R. L. (1983) "The Dramatic Effect of Crystallite Size on X-ray Intensities." Adv. X-ray Anal. v26, 111-117. (Theory)

Cline, J. P. and Snyder, R. L. (1985) "Powder Characteristics Affecting Quantitative Analysis." in Advances in Materials Characterization, II. R. L. Snyder, R. A. Condrate, and P. F. Johnson, Eds. Plenum Press, New York, 131-144. (Theory)

Cline, J. P. and Snyder, R. L. (1987) "The Effects of Extinction on X-ray Powder Diffraction Intensities." Adv. X-ray Anal. v30, 447-456. (Theory)

Collins, G. C. S. and Nicholas, D. (1976) "X-ray Analysis of Particulate Matter Collected in an Environmental Monitoring Device." Analyst, Lond. v101, 901-911. (Filter)

Copeland, L. E. and Bragg, R. H. (1958) "Quantitative X-ray Diffraction Analysis." Anal. Chem. v30, 196-206. (Bulk Anal.)

Crosby, M. T. and Hamer, P. S. (1971) "The Determination of Quartz in Personal Sampler Filters by X-ray Diffraction." Amer. Occup. Hyg. v14, 65-70. (Filter)

Davis, B. L. (1984) "Reference Intensity Quantitative Analysis using Thin-Layer Aerosol Samples." Adv. X-ray Anal. v27, 339-348. (Filter)

Davis, B. L. (1986a) "A Tubular Aerosol Suspension Chamber for the Preparation of Powder Samples for X-ray Diffraction Analysis." Powd. Diff. v1, 240-243. (Samples)

Davis, B. L. (1986b) "Reference Intensity Method of Quantitative X-ray Diffraction Analysis." South Dakota School of Mines. (Theory)

Davis, B. L. (1988) "The Estimate of Limits of Detection in RIM Quantitative X-ray Diffraction Analysis." Adv. X-ray Anal. v31, 317-323. (Filter)

Davis, B. L. and Johnson, L. R. (1982a) "On the Use of Various Filter Substrates for Quantitative Particulate Analysis by X-ray Diffraction." Atmos. Envivon. v16, 273-282. (Filter)

Davis, B. L. and Johnson, L. R. (1982b) "Sample Preparation and Methodology for X-ray Quantitative Analysis of Thin Aerosol Layers Deposited on Glass Fiber and Membrane Filters." Adv. X-ray Anal. v25, 295-300. (Sample Prep.)

Davis, B. L. and Johnson, L. R. (1987) "The Use of Mass Absorption in Quantitative X- ray Diffraction Analysis." Adv. X-ray Anal. v30, 333-342. (Theory)

Davis, B. L., Johnson, L. R. and Mebrahtu, T. (1986) "X-ray Quantitative Analysis of Coal by the Reference Intensity Method." Powd. Diff. v1, 244-254. (Filter)

Dempster, P. B. and Ritchie, P. D. (1952) "Surface of Finely Grained Silica." Nature (London) v169, n4300, 538-539. (Amorphous)

Dobreva, M., Lukanova, R., Werner, I. and Petrov, S. (1982) "Evaluation of the Various Methods for the Determination of Crystalline Silicium Dioxide by Comparing the Results of the Analysis of Industrial Dusts." Z. Gesamte Hyg. Ihre Grenzgeb. v28, 317-320. (Evaluation)

Dollberg, D. D., Abell, M. T. and Lange, B. A. (1980) "Occupational Health Analytical Chemistry Quantitation Using X-ray Powder Diffraction." ASC Symposium Series, No. 120, p43-46. (Filter)

Donovan, D. T., Knauber, J. W. and VonderHeiden, F. H. (1972) "Silica Analysis of Industrial Hygiene Samples by X-ray Diffraction, Interim Report." Fourteenth Eastern Analytical Symposium, Atlantic City, NJ. (Filter)

Dragoo, A. L. (1986) "Standard Reference Materials for Powder Diffraction, Part 1 - Overview of Current and Future Standard Materials." Powd. Diff. v1, 294-298. (Calibration)

Drees, L. R., Wilding, L. P., Smeck, N. E. and Senkayi, A. L. (1989) "Silica in Soils: Quartz and Disordered Silica Polymorphs." in Minerals in Soil Environments, 2nd Ed. Soil Science of America, Madison, WI. 913-974. (Minerals)

Edmonds, J. M., Henslee, W. W. and Guerra, R. E. (1977) "Particle Size Effects in the Determination of Respirable -Quartz by X-ray Diffraction." Anal. Chem. v49, n14, 2196-2203. (Particles)

Edwards, G. H. (1965) "Comparison of X-ray Diffraction, Chemical (Phosphoric Acid), and Dispersion Staining Methods for the Determination of Quartz in Dust." Amer. Ind. Hyg. Assoc. J. v26, 532-536. (Evaluation)

Elton, N. J., Salt, P. D. and Adams, J. M. (1992) "The Determination of Low Levels of Quartz in Commercial Kaolins by X-ray Diffraction." Powd. Diff. v7, (in press) (Bulk Anal.)

Emig, J. A. and Smith, D. K., (1989) "The Detection and Quantification of Low Concentrations of Quartz in Dolostone by X-ray Powder Diffraction." Powd. Diff., v4, 209-213. (Bulk Anal.)

Fluerence, A. M., Loisel, M. and Pusset, M. (1969) "Quantitative Analysis of Raw Materials and Ceramic Products by X-ray Diffraction." Ind. Ceram. v616, 183- ___. (Bulk Anal.)

Foster, R. D. and Walker, R. F. (1984) "Quantitative Determination of Crystalline Silica in Respirable Size Dust Samples by Infrared and Spectrophotometry." Analyst, Lond. v109, 1117-1128. (Filter)

Freedman, R. W., Toma, S. Z. and Lang, H. W. (1974) "On-Filter Analysis of Quartz in Respirable Coal Dust by Infrared Absorption and X-ray Diffraction." A. Ind. Hyg. Assoc. J. v35, 411-418. (Filter)

Frevel, L. K. and Roth, W. C. (1982) "Semimicro Assay of Crystalline Phases by X-ray Powder Diffractometry." Anal. Chem. v54, 677-682. (Filter)

Frondel, C. (1962) "Dana's Systen of Mineralogy, 7th Ed. Vol III. Silica Minerals." J. Wiley and Sons, New York, NY. (Minerals)

Garbauskas, M. F. and Goehner, R. P. (1982) "Complete Quantitative Analysis Using Both X-ray Fluorescence and X-ray Diffraction." Adv. X-ray Anal. v25, 283-288. (Bulk Anal.)

Gephardt, R. F. (1975) "Respirable Dust Regulations and Measurement." Portland Cement Association Meeting, Tuscon, AZ. (Review)

Goehner, R. (1982) "X-ray Diffraction Quantitative Analysis Using Intensity Ratios and External Standards." Adv. X-ray Anal. v25, 309-313. (Bulk Anal.)

Gordon, R. L. and Harris, G. W. (1955) "Effect of Particle Size on the Determination of Quartz by X-ray Diffraction." Nature, v175, n4469, 1135-1137. (Particle)

Hamilton, R. D. and Peletis, N. G. (1991) "The Determination of Quartz in Perlite by X- ray Diffraction." Adv. X-ray Anal. v33, 493-498. (Bulk Anal.)

Hamilton, R. D., Peletis, N. G. and Miles, W. J. (1990) "Detection and Measurement of Crystalline Silica in Minerals and Chemicals.' in Regulation of Crystalline Silica, Washington, DC., Manville Corporation, Denver, CO. (Evaluation)

Henslee, W. W. and Guerra, R. E. (1977) "Direct Quantitative Determination of Silica by X-ray Diffraction on PVC Membrane Filters." Adv. X-ray Anal. v20, 139-152. (Filter)

Hill, R. J. and Howard, C. J. (1987) "Quantitative Phase Analysis From Neutron Powder Diffraction Data Using the Rietveld Method." J. Appl. Cryst. v20, 467-474. (Bulk Anal.)

Howard, S. A. and Snyder, R. L. (1982) "An Evaluation of Some Profile Models and the Optimization Procedures in Profile Fitting." Adv. X-ray Anal. v26, 73-80. (Theory)

Hubbard, C. R. (1982) "New Standard Reference Materials for X-ray Powder Diffraction." Adv. X-ray Anal. v26, 45-51. (Calibration)

Hubbard, C. R., Evans, E. H. and Smith, D. K. (1976) "The Reference Intensity Ratio, I/Ic, for Computer Simulated Powder Patterns." J. Appl. Cryst. v9, 169-174. (Theory)

Hubbard, C. R., Robbins, C. R. and Snyder, R. L. (1983) "XRD Quantitative Analysis Using the NBS*QUANT82 System." Adv. X-ray Anal. v26, 149-157. (Automation)

Hubbard, C. R. and Smith, D. K. (1977) "Experimental and Calculated Standards for Quantitative Analysis by Powder Diffraction." Adv. X-ray Anal. v20, 27-39. (Theory)

Hubbard, C. R. and Snyder, R. L. (1988) "Reference Intensity Ratios - Measurement and Use in Quantitative XRD." Powd. Diff. v3, 74-78. (Theory)

Hutchison, C. S. (1974) "Laboratory Handbook of Petrographic Techniques." John Wiley and Sons, Inc., New York. (Sample Prep.)

Janko, M., McCrae, R. E., O'Donnell, J. F. and Austria, R. J. (1989) "Occupational Exposure and Analysis of Microcrystalline Cristobalite in Mullite." Am. Hyg. Assoc. J. v50, 460-465. (Filter)

Jenkins, R., Fawcett, T. G., Smith, D. K., Visser, J. W., Morris, M. C. and Frevel, L. K. (1986) "JCPDS - International Centre for Diffraction Data Sample Preparation Methods in X-ray Powder Diffraction." Powd. Diff. v1[2]. 51-63. (Sample Prep.)

Jephcott, C. M. and Wall, H. F. W. (1955) "Determination of Quartz of Various Particle Sizes in Quartz-Silicate Mixtures." AMA Arch. Ind. Health v11, 425-430. (Particles)

Johnson, L. R. and Davis, B. L. (1982) "X-ray Diffraction Quantitative Analysis using the Reference Intensity Method." Norelco Reporter, v29[2], 28-34. (Sample Prep)

Jones, J. B., Sanders, J. V. and Segnit, E. R. (1964) "Structure of Opal." Nature, v204, 990-991. (Minerals)

Jordan, B., O'Connor, B. H. and Deyu, L. (1990) "Use of Rietveld Pattern Fitting to Determine the Weight Fraction of Crystalline Material in Natural Low Quartz Specimens." Powd. Diff. v5, 64-69. (Amorphous)

Kacsmar, P. M. and Tomb, T. F. (1984) "Comparison of Alpha Quartz Materials Used as Calibration Standards." Coal Mines Dust Conference, West Virginia University, Morgantown, WV, 144-149. (Calibration)

Kamarchik, P., Jr., (1980) "Quantitative Crystalline Pigment Analysis by X-ray Diffraction." J. Coatings Technol. v52, n666, 79-82. (Bulk Anal.)

Karlak, R. F. and Burnett, D. S. (1966) "Quantitative Phase Analysis by X-ray Diffraction." Anal. Chem. v38, 1741-1745. (Theory)

Klug, H. P., Alexander, L. E. and Kammer, E. (1948) "X-ray Diffraction Analysis of Crystalline Dusts." J. Ind. Hyg. Toxicol. v30, 166-171. (Bulk Anal.)

Klug, H. P. and Alexander, L. E. (1974) "X-ray Diffraction Procedures." 2nd. ed., John Wiley and Sons, Inc., New York. (Theory)

Knight, G. (1971) "Determination of Respirable Quartz in Mine Air Using Personnel Samplers and X-ray Diffraction." Proceedings 18th Spectroscopy Symposium and Exposition, Spectroscopic Society of Canada, pp86-92. (Filter)

Knight, G. (1972) "X-ray Diffraction Analysis of Quartz in Respirable Dust, Brief Description and Procedure." in Proceedings Roundtable Discussion, Analytical Techniques for Quartz, J. V. Crable, Ed., Amer. Conf. Govt. Ind. Hyg., Cincinnati, OH. Pp30-38. (Bulk Anal.)

Knight, G. (1973) "Comments." in "Proceedings of a Roundtable Discussion on Analytical Techniques for Quartz." American Conference on Governmental Industrial Hygienists, Cincinnati, OH, p67. (Evaluation)

Knight, G. (1984) "Interlaboratory Crosscheck of Quartz Analysis on Mine Airborne Dust Samples." Amer. Ind. Hyg. Assoc. J. v45, 655-660. (Evaluation)

Knight, G., Stefanich, W. and Ireland, G. (1972) "Laboratory Calibration of a Technique for Determination of Respirable Quartz in Mine Air." Amer. Ind. Hyg. Assoc. J. v33, 469-475. (Calibration)

Knight, G., Kowaichuk, R. and Yourt, R. (1974) "Development of a Dust Sampling System for Hardrock Mines Based on Gravimetric Quartz Assessment," Amer. Ind. Hyg. Assoc. J. v35, 671-680. (Sampling)

Knight, G. (1984) "The Use of an On-line Computer to Control Quantitative XRD Analysis.' in Proceedings of the Fourth Symposium on Electron Microscopy and X-ray Applications to Environmental and Occupational Analysis, (1980), P. A. Russell, Ed., Butterworths, pp171-185. (Bulk Anal.)

Knight, G. (1986) "CAMPEDS - A Dust Sampling and Assessment System for Use in Hard Rock Mines." Ann. Occup. Hyg. v30, 139. (Filter)

Knight, G. and Zawadski, W. (1989) "X-ray Diffraction Analysis of Mine Airborne Dust - An Inteference Problem at Helmo Gold Mine." Aina J., v50, 293-297. (Filter)

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