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TABLE 6-2 (Continued) <br /> Sample <br /> detection Percent <br /> Sample matrix Preparation method Attalytic:al method limit recovery Reference <br /> Air Collect sample on cellulose AAS 8 ng/L 100-101 Nerin et al. 1989 <br /> (particulate lead) acetate filter; dissolve in HNO3 <br /> with heat; add HCl/H2O2 and <br /> react in hydride generator with <br /> sodium borohydride to generate <br /> lead hydride <br /> Air Collect sample on filter; spike IDMS 0.1 ng/m3 NR Volkening et al. o� <br /> (particulate lead) filter with 206 Pb; dissolve 1988 <br /> filter in NaOH; acidify; separate <br /> lead by electrodeposition; A <br /> dissolve in acid <br /> Air Collect sample on nucleopore EPXMA NR NR Van Borm et al. <br /> (particulate lead) polycarbonate filter; coat filter LAMMA NR NR 1990 <br /> sections with carbon o <br /> N <br /> Air Filtered sample adsorbed on GC/PID (Method 40 µg/m3 99 NIOSH 1987 <br /> (gaseous lead) XAD-2 resin, desorbed with 2534 (TML) and (TML) <br /> pentane 2537 (TEL)) 45 ug/m3 105.5 <br /> (TEL) <br /> Air (particulate Particulate matter collected GFAAS NR NR (par- Birch et al. <br /> and organolead) on glass fiber filter; (particulate); ticulate);1980 <br /> filtered gases passed through 0.25 ng/m3 95-99 <br /> iodine monochloride bubblers; (gaseous) (gaseous) <br /> particulate matter wet ashed; <br /> bubbler solution converted to <br /> dithiazone complex in presence <br /> of EDTA-salts and extracted with <br /> carbon tetrachloride solution <br /> followed by acid extraction <br /> TABLE 6-2 (Gonilnuad) <br />