National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ Discard the gloves. 4. Clean the template in preparation for the next wipe sample . 5. Include two blank pads (moistened and placed in bags) with each sample set. Use the procedure of NIOSH Method 7105, including final sample dilution to 10 mL. NOTE: Additional portions of nitric acid may be needed for complete digestion of the sample, including the pad. Include appropriate media and reagent blanks. MEASUREMENT: Screening of all samples by flame AAS or ICP, followed by graphite furnace AAS for those samples giving "Not Detected" is an efficient scheme. ”
