Table 2.

Percentage representative residual aliphatic and aromatic hydrocarbons in 3S and AB4 polluted systems after 21 and 42 days of incubation at room temperature

Hydrocarbon fractions	3S Microcosm			AB4 Microcosm
	Day 0	Day 21	Day 42	Day 0	Day 21	Day 42
Aliphatics
nC1 methane	100	43.56	25.35	100	44.34	0.00
nC2 ethane	100	56.62	0.00	100	59.63	0.00
nC3 propane	100	72.75	40.02	100	45.27	0.00
nC3 cyclopropane	100	79.31	43.33	100	41.66	0.00
nC4 butane	100	73.37	33.19	100	30.80	0.00
nC4 methylpropane	100	70.08	16.86	100	24.48	0.00
nC5 pentane	100	80.65	53.90	100	37.84	0.00
nC5 methylbutane	100	67.89	16.19	100	11.90	0.00
nC6 hexane	100	83.66	55.26	100	52.71	0.00
nC7 heptane	100	73.25	35.05	100	28.55	36.70
nC8 octane	100	83.02	60.72	100	48.68	0.00
nC8 2,2,4-trimethylpentane	100	85.86	64.93	100	63.85	0.00
nC9 nonane	100	75.61	34.80	100	31.31	9.76
nC10 decane	100	81.69	53.11	100	42.79	0.00
nC11 undecane	100	65.30	24.40	100	23.20	7.20
nC12 dodecane	100	72.64	49.24	100	51.00	8.88
nC13 tridecane	100	61.88	31.74	100	11.64	19.94
nC14 tetradecane	100	77.69	54.93	100	57.09	11.36
nC15 pentadecane	100	50.77	17.71	100	0.00	0.00
nC16 hexadecane	100	71.48	51.07	100	46.36	14.11
nC17 heptadecane	100	69.44	46.82	100	39.83	9.04
Pristane	100	66.61	43.32	100	33.56	15.74
nC18 octadecane	100	67.69	42.11	100	37.96	16.75
Phytane	100	65.28	37.46	100	39.02	2.96
nC19 nonadecane	100	52.50	23.20	100	23.42	2.44
nC20 eicosane	100	48.77	24.61	100	29.86	0.00
nC21 heneicosane	100	24.30	0.00	100	0.00	0.00
nC22 docosane	100	31.71	12.08	100	17.60	0.00
nC23 tricosane	100	15.97	11.77	100	9.45	0.00
Aromatics
Naphthalene	100	0.00	0.00	100	0.00	0.00
Acenaphthylene	100	82.28	0.00	100	76.00	0.00
Acenaphthene	100	72.80	40.46	100	61.62	32.39
Fluorene	100	77.24	0.00	100	67.90	0.00
Phenanthrene	100	64.91	0.00	100	53.06	0.00
Anthracene	100	56.97	40.31	100	46.52	14.96
Fluoranthene	100	76.06	23.59	100	71.69	7.80
Pyrene	100	66.97	0.00	100	45.30	0.00
Benzo(a)anthracene	100	59.52	0.00	100	32.19	0.00
Chrysene	100	50.36	53.49	100	28.83	8.65
Benzo(b)fluoranthene	100	54.33	60.99	100	24.76	5.73
Benzo(a)pyrene	100	62.90	42.67	100	26.09	1.58
Dibenzo(a,h)anthracene	100	64.64	43.01	100	25.85	1.86
Benzo(ghi)perylene	100	46.73	51.01	100	6.57	1.45
Indono(123-cd)pyrene	100	45.11	18.87	100	25.00	0.00

Values were calculated from peak areas on day 21 and day 42, respectively, relative to peak area values for day 0