Table 3.

Detailed chemical analysis of hydrocarbon compounds from two oiled sand samples collected on 1 September 2010 from Pensacola Beach compared to source oil sampled on 20 May 2010 from MC block 252 after the DH blowout

Analyte	Hydrocarbon content
	Moderately oiled (mg of compound/kg of sand−1)	Heavily oiled (mg of compound/kg of sand−1)	Source oil (mg of compound/kg of oil−1)
Polycyclic aromatic hydrocarbons
1-Methylnaphthalene			1,000
2-Methylnaphthalene			1,600
Anthracene	0.029	0.024
Benzo[a]anthracene	0.037		30
Benzo[a]pyrene	0.052		23
Benzo[b]fluoranthene	0.075	0.11	26
Benzo[g,h,i]perylene	0.032		18
Benzo[k]fluoranthene	0.050	0.071	20
Chrysene	0.260	0.62	77
Dibenz(a,h)anthracene	0.040		18
Fluoranthene	0.042		25
Fluorene	0.014	0.011	140
Indeno[1,2,3-cd]pyrene	0.024		16
Naphthalene			910
Phenanthrene	0.027	0.022	320
Pyrene	0.047		32
Aliphatic hydrocarbons
C5 to C6 aliphatics			5,370
C6 to C8 aliphatics	35	24	62,400
C8 to C10 aliphatics	13	10	57,800
C12 to C16 aliphatics	9.5	14	72,500
C16 to C35 aliphatics	370	1,900	69,100
Aromatic hydrocarbons
C5 to C7 aromatics			2,590
C7 to C8 aromatics			7,010
C8 to C10 aromatics	73	81	20,200
C10 to C12 aromatics			12,800
C12 to C16 aromatics	31	6.8	25,100
C16 to C21 aromatics	72	92	25,600
C21 to C35 aromatics	280	550	64,200
Total petroleum hydrocarbons (C8 to C40)	1,900	4,500	500,000
Ratio of lighter (C6 to C16) to heavier (C16 to C35) aliphatics	0.16	0.025	2.79