National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Calibrate daily with at least six working standards over the linear range of the detector. a. Prepare working standards by serial dilution of the calibration stock solution. b. Analyze together with samples and blanks (steps 12 and 13) . ”
National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Determine the concentration, μg/mL, for each analyte, and multiply by the desorption volume, mL, and the dilution factor, if any, to calculate the mass, μg, recovered. Add the amounts recovered from filter, filter holder, sorbent front (W f) , and sorbent back (W b) sections to determine the mass found in a field sample (W) or the average sampler blank (B) , and correct for DE. NOTE: If W b > W f/10, report breakthrough and possible sample loss. ”
National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Seal inlet of filter holder and outlet of sorbent tube with PTFE tape and plastic caps. Personal sampling pump, 0.01 to 0.2 L/min, with flexible connecting tubing. Gas chromatograph, 63Ni electron capture detector, integrator, and column (see page 5517-1) . Vials, 5-mL, PTFE-lined caps. Syringe, 10-μL, readable to 0.1 μL. Volumetric flasks, 5-mL, and convenient sizes for making dilutions. Pipets, 2-mL, and convenient sizes for making dilutions. Ultrasonic bath. Balance, readable to 1 mg. PTFE tape. SPECIAL PRECAUTIONS: Hexane (flash point = -22 °C) is highly flammable. ”
