SILICA, AMORPHOUS: METHOD 7501, Issue 3, dated 15 March 2003 - Page 7 of 8 REFERENCES: [1] [2]
[3]
[4]
[5] [6] [7] [8]
Palassis J [19 82]. N IOS H Interna l Rep ort. Cincinn ati, OH : National Ins titute for O ccu pation al Safety and H ealth, (unpublished, August). NIOSH [1981]. NIOSH /OSH A O ccupatio nal He alth Guidelines for Ch em ical Ha zards. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health. DHHS (NIOSH) Publication No. 81123. Available as GPO Stock #017-033-00337-8 from Superintendent of Documents, W ashington, DC 20402. Key-Schwartz RJ, Baron PA, Bartley DL, Rice FL, Schlecht PC [2003]. Chapter R, Determination of airborne c rystalline silica. In: NIO SH Ma nua l of Analytical Metho ds, 4 th ed., 3 rd Suppl. Cin cinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2003154. NIOSH [1980]. Amorphous Silica: Method P&CAM 316. In: Taylor DG, ed., NIOSH M anual of Analytical Methods, 2nd ed., Vol. 6. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 80-125. Lange BA, Haartz JC, Hornung RW [1981]. Determination of synthetic amorphous silica on industrial air samples, Anal Chem 53(9):1479-84. Inhaled Particles and Vapours [1961]. Pergamon Press, Oxford, U.K. Leroux, J, Powers C [1969]. Direct X-ray diffraction quantitative analysis of quartz in industrial dust films de pos ited on silver m em bran e filters, Luft 29(5):26. Palassis, J [1984]. Amorphous silica analysis by X-ray powder diffraction. Paper presented to the Am Ind Hyg Con ference. De troit, MI (May 1984).
METHOD REVISED BY: Rosa Key-Schwartz, Ph.D., NIOSH/DART
T ABL E 1 . C AS Nu m be rs , R T EC S N um bers, and Exposure Lim its for Am orphorous Silica Forms Amorphous Forms
CAS#
RTECS
OSHA PEL (mg/m3)
NIOSH PEL (mg/m3)
ACGIH TLV (mg/m3)
diatomaceous earth, <1% crystalline SiO2
61790-53-2
HL8600000
80/% SiO2
6
10 (total)
precipitated, and gel
7699-41-4, 112926-00-8
VV8850000
80/% SiO2
6
10 (total)
fumed
69012-64-2 112945-52-5
VV310000
80/% SiO2
–
2 (respir)
fused
60676-86-0
VV7328000
–
–
0.1 (respir)
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
