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. 2009 Feb 18;2(2):213–221. doi: 10.1111/j.1751-7915.2008.00079.x

Figure 2.

Figure 2

Changes in composition of oil on sediments from PWS in 1990 laboratory microcosm tests of bioremediation as measured by HPLC chromatography (different from more detailed GC‐MS reported for field samples). Sats is the saturates or alkanes. Aromatics (2–4+ rings) include the 41 target PAHs, plus other multi‐ring species. The polars (or NSO fraction) include asphaltenes, resins and oxygenated by‐products of biodegradation, and are considered largely inert to biodegradation. (Wt % is the percentage composition based on mass.)