National Institute of Occupational

Magnesium vanadates, as vanadium compounds in general, are known irritants of the respiratory tract and conjunctiva. The threshold limit value (TLV) for vanadium compounds in air recommended by the National Institute of Occupational Safety and Health is 0.05 mg/m based on a typical 8-h workday and 40-h workweek (7,147). Chronic inhalation can lead to lung diseases such as bronchitis, bronchopneumonia, and lobar pneumonia. These dust-related effects can be avoided by use of individual respirators in areas where exposure is likely. 

The identification of pollution prevention options has become a maintenance requirement. In addition to these requirements, the National Institute of Occupational Safety and Health (NIOSH) performed its first investigation of indoor air quahty. The U.S. Department of Energy (DOE) has also begun to research air quahty. 

Registy of Toxic Effects of Chemical Substances, National Institute of Occupational Safety and Health, Washington, D.C., Aug. 1994... 

High performance Hquid chromatography (hplc) may be used to determine nitroparaffins by utilizing a standard uv detector at 254 nm. This method is particularly appHcable to small amounts of nitroparaffins present, eg, in nitro alcohols (qv), which caimot be analyzed easily by gas chromatography. Suitable methods for monitoring and deterrnination of airborne nitromethane, nitroethane, and 2-nitropropane have been pubUshed by the National Institute of Occupational Safety and Health (NIOSH) (97). Ordinary sorbant tubes containing charcoal are unsatisfactory, because the nitroparaffins decompose on it unless the tubes are held in dry ice and analyzed as soon after collection as possible. 

The National Institute of Occupational Safety and Health (NIOSH), under the Department of Health and Human Services, works with OSHA. It is NIOSH s responsibihty to determine safe exposure limits for chemical substances and to recommend to OSHA that these limits be adopted as standards. 

Exceptions to the preceding requirements would apply where explosionproof equipment is needed building ceiling heights are such that the standard 3.7-m (12-ft) lift is all that wih ever be needed and loads will never exceed 1 to 1.5 tons. Safety requirements for lift trucks are mandated by OSHA, by NIOSH (National Institute of Occupational Safety and Health), by State Depts. of Labor, and often by individual company standards. Among these requirements are backup-movement signals, seat belts, overhead framework for pro-... 

NIOSH National Institute of Occupational Safety and Health... 

R. J. S. Lewis and R. L. Tatken, Eds., Registry of Toxic Effects of Chemical Substances, U.S. Department of Health and Human Services. National Institute of Occupational Safety and Health Publication No. 79-100, January 1985 Update, NIOSH, Cinciimati, OH. 

EL = emissions level ERA = Environmental Protection Agency HSDB = Hazardous Substances Data Bank lARC = International Agency for Research on Cancer IRIS = Integrated Risk Information System NIOSH = National Institute of Occupational Safety and Health OEL = occupational exposure limit OSHA = Occupational Safety and Health Administration PEL = permissible exposure limit RAC = reference air concentration REL = recommended exposure limit RCRA = Resource Conservation and Recovery Act RfD = reference dose TLV = threshold limit value TWA = time-weighted average WHO = World Health Organization... 

Supported by Grant AT(11-1)-3140 from the U.S. Energy Research Development Agency and by Public Health Service Contract HSM 99-72-24 from the National Institute of Occupational Safety Health. 

National Institute of Occupational Health and Safety Carcinogens List (NIOSH)... 

Filter samples can be prepared to airborne workplace concentrations by spiking each filter with aqueous solution containing elements with concentrations gravimetrically traceable to ultrapure metals or stoidiiometricaUy well defined oxides. The amormts correspond for some of the materials to current threshold limit values of contaminants in workroom atmospheres provided that the simulated filter has been exposed to one cubic meter of air. The certified values are based on a gravimetric procedure, i.e. weight per volume composition of the primary reference material dissolved in high purity sub-dis-tiUed acids. The National Institute of Occupational Health in Oslo, Norway, has produced several batches of such materials certified for 20 elements. Additionally, information values are reported for four other elements see Table 6.2. 

National Institute of Occupational Health P.O. Box 8149 DEP N-0033 Oslo, Norway E-mail yngvarth stami.no... 

Institut de Recherches de la Siderurgie, France International Organization for Standardization ISO Council Committee on Reference Materials International Union for Pure and Applied Chemistry Laboratory of the Government Chemist, UK, formerly NPL National Bureau of Standards, USA, now NIST National Committee for Clinical Laboratory Standards, USA National Institute for Biological Standards and Control, UK Japanese National Institute for Environmental Studies National Institute of Occup. Health, Oslo, Norway National Institute of Standards and Technology, USA, formerly NBS,... 

NIOSH. 1979. Final report. In situ sampling techniques in environmental air analysis. Report no. 5-R01-OH-00632-02. Cincinnati, OH U.S. Department of Health, Education, and Welfare, National Institute of Occupational Safety and Health. NTIS publication no. PB84-241439. 

NIOSH. 1984. Acrylonitrile-Method 1604. In NIOSH manual of analytical methods. 3rd ed. Cincinnati, OH National Institute of Occupational Safety and Health. 

Immediately Dangerous To Life or Health (IDLH) This is a standard set by the National Institute of Occupational Safety and Health (NIOSH) which limits exposure to any toxic, corrosive, or asphyxiant substance that poses an immediate threat to life, or would cause irreversible or delayed adverse health effects, or world interfere with an individual s ability to escape from a dangerous atmosphere. 

---