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C <br /> r <br /> 1AitE 45.3 <br /> r <br /> TOUILIgRiUM PARIIONING Of SELECT <br /> GASOLINE NTOROCARBONS IN MODEL ENVIRONMENTS n <br /> h c <br /> SATURATED <br /> UNSATURATED TOPSOIL DEEP SOIL C <br /> b <br /> COMPOUND Lao K Rt soil Water Alt soil Water t' <br /> ow K cc <br /> 1.68 77.5 0.1 22.4 94.1 $.9 <br /> Haxone 3.90 (e) 3.030 50.3 0.3 49.4 79.1 20.9 <br /> Isopentana 3.37 If) 900 1'36 94.1 5.9 <br /> Methylpentane 3.90 (e) 3.830 1.69 77.b 0•I 22.3 <br /> 94.7 001 s.3 99.$ 0.7 <br /> . <br /> Trimethylpentone 4.07 (f) 36,000 1.9.3.3 94,0 15.2 <br /> Cyclohexane 3.44 (e) 1,330 0.18 91.6 0.4 8.0 <br /> '3 88.1 7.1 4.0 21.4 19.6 <br /> Benzene 2.13 (e) 65 5..6 x 10.3 96.5 1.9 1.6 52.1 47.9 <br /> Toluene 2.69 (g) 240 bx 10.3 98.8 0.7 0.5 74.4 25.6 <br /> xylenes 3.16 Ie) 700 7 a 10.3 <br /> 2,150 S a 10 99.6 0.2 0.2 90.0 10.0 <br /> Trimethylbenzenes 3.65 (h) .{ <br /> Naphthalene 3.30 (e} 962 4.02 x 10 99.4 0.5 0.03 00.2 19.0 <br /> acalculations based on Mackay's equilibrium portioning atadel {34,35,36): see Introduction In Volume 1 ,lor description of model and <br /> environmental conditions chosen to represent an unsetur�ted top sa11 and saturated deep @oil. Calculated percentages should be <br /> considered as rough estimates and used only for general guldsnce. <br /> I <br /> bReference 652. <br /> cToken from Reference 74 untess otherwise specified. Unita equal atm-m3/mol. <br /> dused sorption coefficient 9 ■ 0.001 x Koc. <br /> °Reference 29. <br /> (Arthur D. little, Inc., estimate according to equations provided in Reference 31. <br /> 00 <br /> v gReference 10. <br /> hReference 31. <br />