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TABLE 6-2 (Continued) <br /> Sample <br /> detection Percent <br /> Sample matrix Preparation method Analytical method limit recovery Reference <br /> Water (total Filter sample; analyze; heat ICP-AES 10-50 ug(L >80 Que Hee and Boyle <br /> lead) or dilute with acid 1988 <br /> Soil Dry sample and sieve; digest ICP-AES 0.09 µg/g 97-103 Schmitt et al. 1988 <br /> with HNO3; centrifuge <br /> Soil Dry sample and sieve for XRF; XRF NR 65-98 Krueger and Duguay <br /> digest sieved sample with HNO3 AAS NR 63-68 1989 > <br /> Z <br /> and heat for AAS <br /> Soil Sample dried, dry ashed, AAS 2 µg/g 79-103 Beyer and o <br /> digested with acid, and diluted Cromartie 1987 <br /> with water <br /> 0 <br /> Soil,wastes, Sample acid digested, diluted AAS 0.1 mg/L NR EPA 1986e <br /> and groundwater with water, and filtered (EPA method 7420) <br /> GFAAS l µg/L NR <br /> (EPA method 7421) <br /> Soil, dust, Digest sample with hot acid; AAS 12 ng/g >80 Que Hee et al. 1985b <br /> and paint dry; redissolve in HNO3 <br /> Sediment Hot digest sample with HNO3/ GFAAS NR 92-95 Bloom and Crecelius <br /> H2SO4 1987 <br /> Sediment, fish Homogenize fish; add EDTA to GC/AAS 0.O1 µg/g 81-85 Chau et al. <br /> (TAL) sample; extract with hexane; (sediment) 1979 <br /> centrifuge;analyze organic 0.025 ug/g 72-76 <br /> layer (fish) <br /> TABLE 6-2 (Continued) <br />