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Pesticides/PCBs Method TO-10A <br /> TABLE 2. SAMPLING EFFICIENCIES FOR SOME ORGANOCHLORINE PESTICIDES <br /> Quantity Sampling efficiency,% <br /> Introduced, Air <br /> Compound /,cg2 Volume,m3 mean RSD n <br /> a-Hexachlorocyclohexane(a-BHC) 0.005 0.9 115 8 6 <br /> -Hexachlorocyclohexane(Lindane) 0.05-1.0 0.9 91.5 8 5 <br /> Chlordane,technical 0.2 0.9 84.0 11 8 <br /> p,p'-DDT 0.6, 1.2 0.9 97.5 21 12 <br /> p,f-DDE 0.2,0.4 0.9 102 11 12 <br /> Mirex 0.6, 1.2 0.9 85.9 22 7 <br /> 2,4-D Esters: <br /> Isopropyl 0.5 3.6 92.0 5 12 <br /> Butyl 0.5 3.6 82.0 10 11 <br /> Isobutyl 0.5 3.6 79.0 20 12 <br /> Isoctyl 0.5 3.6 >802 -- -- <br /> 'Air volume=0.9 m3. <br /> Not vaporized. Value base on%RE=81.0(RSD= 10%,n=6). <br /> TABLE 3. SAMPLING EFFICIENCIES FOR ORGANOPHOSPHORUS PESTICIDES <br /> Quantity Sampling efficiency, % <br /> Compound Introduced,µg2 mean RSD n <br /> Dichlorvos(DDVP) 0.2 72.0 13 2 <br /> Ronnel 0.2 106 8 12 <br /> Chlorpyrifos 0.2 108 9 12 <br /> Diazinon' 1.0 84.0 18 18 <br /> Methylparathion' 0.6 80.0 19 18 <br /> Ethylparathion' 0.3 75.9 15 18 <br /> Malathion' 0.3 1003 -- -- <br /> 'Analyzed by gas chromatography with nitrogen phosphorus detector or flame photometric detector. <br /> 2Air volume=0.9 m3. <br /> 3Decomposed in generator;value based on%RE= 101 (RDS=7,n=4). <br /> January 1999 Compendium of Methodsfor Toxic Organic Air Pollutants Page 10A-21 <br />