National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Prepare calibration graph (ratio of peak area of analyte to peak area of internal standard vs. mg fluorotrichloromethane) . Determine desorption efficiency (DE) at least once for each lot of charcoal used for sampling in the range of interest. ”
National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Inject sample aliquot manually using solvent flush technique or with autosampler. NOTE 1: tr = 3 min for fluorotrichloromethane and 4.5 min for nonane under these conditions. NOTE 2: If peak area is above the linear range of the working standards, dilute an aliquot of the desorbed liquid with eluent, reanalyze, and apply the appropriate dilution factor in calculations. Measure peak area. Divide the peak area of analyte by the peak area of internal standard on the same chromatogram. ”
National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Carbon disulfide is toxic and a serious fire and explosion hazard (flash point = -30 °C) . Work with it only in a hood and away from spark sources. SAMPLING: 1. 2. 3. 4. Calibrate each personal sampling pump with a representative sampler in line. Break the ends of the sampler immediately before sampling. Attach sampler to personal sampling pump with flexible tubing. Sample at an accurately known flow rate between 0.01 and 0.05 L/min for a total sample size of 0.3 to 7 L. Cap the sampler. Pack securely for shipment in an insulated container with bagged refrigerant. SAMPLE PREPARATION: 5. 6. ”
