National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ The working range is 0.06 to 7.4 ppm (0.1 to 12.5 mg/m3) for a 25-L air sample [1] . Large (400 mg/200 mg) charcoal tubes are required for analyte collection, since breakthrough volume is lower with smaller charcoal tubes [2] . Analyte capacity of the large charcoal tubes has not been determined under conditions of high relative humidity [3] . ”
National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Break open the ends of the sample tube immediately prior to sampling. Attach sample tube to personal sampling pump with flexible tubing. Sample at an accurately known flow rate between 0.01 and 0.2 L/min for a total sample size of 1 to 25 L. Cap both ends of the sample tubes with plastic caps and pack securely for shipment. Ship with refrigerant packs to keep samples cold. SAMPLE PREPARATION: 5. 6. 7. 8. Place the initial glass wool plug and front sorbent section of the sample tube in a 4-mL glass screw cap vial. Place the back sorbent section of the sample tube in separate 4-mL vial. ”
National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ In this method, a capillary GC column has replaced the original packed column. Improvements include but are not limited to the following: new and less hazardous desorption solvent, smaller volume of desorption solvent required, improved desorption efficiency (DE) , and lower LOD/LOQ. A storage stability study was completed and was found acceptable at 98.5% after 30 days at 5 C. NIOSH Manual of Analytical Methods (NMAM) , Fourth Edition ACETONITRILE: METHOD 1606, Issue 3, dated 15 January 1998 - Page 2 of 3 REAGENTS: EQUIPMENT: 1. 2. 3. 4. 5. 6. ”
