Fig. 6. Nano moles of the fatty acids 14:0 iso (top) and 15:0 anteiso (bottom) extracted from soil. C= soil before experiment was started, 0 = soil to which neither phenanthrene nor methylene chloride was added, 1, 5, 25, and 125 = soils to which 100 ng/g phenanthrene was added in 1, 5, 25 or 125 µL/g methylene chloride, respectively. Significant differences ( = 0.05) only exist between treatments labeled with different letters.