National Institute for Occupational Safety and Health

“ Carbon disulfide is toxic and extremely flammable (flash point = -30 °C) ; work with it only in a hood. Ethylene chlorohydrin is highly toxic, has poor warning properties, and as a liquid, is readily absorbed through the skin and penetrates rubber [3] . Toxic effects may be cumulative. Wash liquid from skin immediately if contacted. SAMPLING: 1. 2. 3. 4.
Calibrate each personal sampling pump with a representative sampler in line. ”

“ Prepare calibration graph (ratio of peak area of analyte to peak area of internal standard vs. μg ethylene chlorohydrin) . Determine desorption efficiency (DE) at least once for each lot of charcoal used for sampling in the calibration range (step 8) . Prepare three tubes at each of five levels plus three media blanks. a. Remove and discard the back sorbent section of a media blank sampler. b. Inject a known amount (2 to 20 μL) of calibration stock solution, or a dilution thereof, directly onto front sorbent section with a microliter syringe. c. Cap the tube. Allow to stand overnight. d. ”

“ NIOSH/OSHA Occupational Health Guidelines for Chemical Hazards, U.S. Department of Health and Human Services, Publ. (NIOSH) 81-123 (1981) , available as GPO Stock #017-033-00337-8 from Superintendent of Documents, Washington, DC 20402. ”