American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.05 mg/m3 TWA - Respirable fraction; see Appendix C paragraph C. Appendix A4 - Not Classifiable as a Human Carcinogen; BEI® (TLV listed under Vanadium pentoxide)
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.05 mg V/m3 Ceiling (15 Minutes)
Health Effects: Irritation – Eye, Nose, Throat, Skin---Marked (HE14) Acute and chronic bronchial damage (HE11 and HE10).
Affected organs: Eyes, skin, respiratory system
Notes:
EPA’s oral reference dose (daily oral exposure likely to be without an appreciable risk of deleterious effects during a lifetime) of vanadium pentoxide is 0.009 mg/kg/day.
Two-year inhalational studies by the NTP found that vanadium pentoxide was a lung carcinogen in male rats and male and female mice.
Since vanadium is mainly excreted by the kidneys, with a terminal half-life in serum of about 10 days, urinary vanadium is used as a biomarker of occupational exposure to vanadium pentoxide.
The ACGIH established a biological threshold concentration in urine collected at the end of the work week of 50 µg of vanadium/gram of creatinine in urine. The concentration in the general population is usually less than 1 µg V/gram creatinine.
Date Last Revised: 02/14/2006
Literature Basis:
NIOSH Pocket Guide to Chemical Hazards: Vanadium fume.
Barceloux, D.G.: Vanadium. J. Toxicol. Clin. Toxicol.37(2): 265-278, 1999.
Heinemann, G., Fichtl, B. and Vogt, W.: Pharmacokinetics of vanadium in humans after intravenous administration of a vanadium containing albumin solution. Br. J. Clin. Pharmacol.55(3): 241-245, 2003.
Irsigler, G.E., Visser, P.J. and Spangenberg, P.A.L.: Asthma and chemical bronchitis in vanadium plant workers. Am. J. Ind. Med.35(4): 366-374, 1999.
Pohanish, R.P. (editor): Vanadium Pentoxide. In, Sittig’s Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 2310-2312.
Ress, N.B., et al.: Carcinogenicity of inhaled vanadium pentoxide in F344/N rats and B6C3F1 mice. Toxicol. Sci.74(2): 287-296, 2003.
sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
maximum volume: 960 Liters minimum volume: 480 Liters maximum flow rate: 2.0 L/min (TWA)
maximum volume: 30 Liters maximum flow rate: 2.0 L/min (Ceiling)
current analytical method: Inductively Coupled Argon Plasma; ICP/DCP-AES
method reference: OSHA Analytical Method (OSHA ID-125G)
method classification: Fully Validated
note: Analytical method does not distinguish between dust and fume. If confirmation of Vanadium Pentoxide is necessary use the following sampling procedure:
sampling media: Tared Low Ash Polyvinyl Chloride (LAPVC) filter 5 microns
maximum volume: 960 Liters minimum volume: 480 Liters maximum flow rate: 2.0 L/min
current analytical method: X-ray Diffraction, XRD; and X-ray Fluorescence, XRF
method reference: OSHA Analytical Method (OSHA ID-185)
method classification: Fully Validated
note: Submit as a separate sample.
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