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b � <br /> TABLE 6. EXTRACTION AND 24-H SAMPLING EFFICIENCIES FOR VARIOUS <br /> o PESTICIDES AND RELATED COMPOUNDS a <br /> Sampling Eficiency',%,at C <br /> :r <br /> Extraction Efficienc},% 10 ng/m' 100 ng/m' 1,000 ng/m' <br /> Compound mean RSD mean RSD mean RSD mean RSD <br /> Chlrovvrifos 83.3 11.5 83.7 18.0 92.7 15.1 83.7 18.0 <br /> Pentachlorophenol 84.0 22.6 66.7 42.2 52.3 36.2 66.7 42.2 <br /> Chlordane 95.0 7.1 96.0 1.4 74.0 8.5 96.0 1.4 <br /> o-Phenylphenol 47.0 46.7 46.0 19.1 45.3 29.9 46.0 19.1 <br /> `o Lindane 96.0 6.9 91.7 11.6 93.0 2.6 91.7 11.6 <br /> DDVP 88.3 20.2 51.0 53.7 106.0 1.4 51.0 53.7 <br /> 0 <br /> 2,4-D Methyl Ester -- -- 75.3 6.8 58.0 23.6 75.3 6.8 <br /> Heptachlor 99.0 1.7 97.3 13.6 103.0 17.3 97.3 13.6 <br /> 0 <br /> Z Aldrin 97.7 4.0 90.7 5.5 94.0 2.6 90.7 5.5 <br /> 0 <br /> k Dieldrin 95.0 7.0 82.7 7.6 85.0 11.5 82.7 7.6 <br /> Ronnel 80.3 19.5 74.7 12.1 60.7 15.5 74.7 12.2 <br /> Diazinon 72.0 21.8 63.7 18.9 41.3 26.6 63.7 19.9 <br /> Z. <br /> a trans-Nonachlor 97.7 4.0 96.7 4.2 101.7 15.3 96.7 4.2 <br /> Ox chlorodane 100.0 0.0 95.3 9.5 94.3 1.2 95.3 9.5 <br /> b <br /> a-BHC 98.0 3.5 86.7 13.7 97.0 18.2 86.7 13.7 <br /> Bendiocarb 81.3 8.4 59.7 16.9 30.7 23.5 59.7 16.9 <br /> Chlorothalonil 90.3 8.4 76.7 6.1 70.3 6.5 76.7 6.1 <br /> He tachlor Epoxide 100.0 0.0 95.3 5.5 97.7 14.2 95.3 5.5 <br /> Dacthal -- -- 87.0 9.5 95.3 22.2 87.09.5 I <br /> Aroclor 1242 ::Jl <br /> 91.7 14.4 95.0 15.5 94.7 17.5 95.0 15.5 <br /> `Mean values for one spike at 550 ng/plug and two spikes at 5,500 ng/plug. <br /> 2Mean values for three determinations. <br />