Supplementary data

Identification of refined petroleum products in contaminated soils using an identification index for GC chromatograms

DongwookKwona, Myoung-Soo Koa, Jung-SeokYangb, Man Jae Kwonb,d, Seung-Woo Leec, and SeunghakLeea,d,*

a Center for Water Resource Cycle, Green City Technology Institute, Korea Institute of Science and Technology (KIST), Seoul 136-792, Republic of Korea

bKorea Institute of Science and Technology (KIST) – Gangneung Institute, Gangneung, Gangwondo 210-340, Republic of Korea

cDivision of Geoenvironment, JIU EnE Co. Ltd., Seoul 157-801, Republic of Korea

d Energy Environment Policy and Technology, Green School, Korea University (KU) -Korea Institute of Science and Technology (KIST), Seoul 136-701, Korea

Table S1

Relative peak area of each range in GC chromatograms (RPAGC) for refined petroleum products(G forgasoline, K for kerosene, and D fordiesel).

C6 - C8 / C8 - C16 / C16 - C26
G1 / 0.51 / 0.37 / 0.12
G2 / 0.41 / 0.46 / 0.13
G3 / 0.38 / 0.48 / 0.14
G4 / 0.47 / 0.42 / 0.12
G5 / 0.39 / 0.47 / 0.14
G6 / 0.41 / 0.46 / 0.13
G7 / 0.41 / 0.47 / 0.12
K1 / 0.02 / 0.93 / 0.05
K2 / 0.02 / 0.93 / 0.05
D1 / 0.01 / 0.47 / 0.51
D2 / 0.02 / 0.52 / 0.46
D3 / 0.01 / 0.50 / 0.49
D4 / 0.01 / 0.48 / 0.51
D5 / 0.01 / 0.48 / 0.51
D6 / 0.02 / 0.49 / 0.49
D7 / 0.01 / 0.50 / 0.49

Table S2. Identification index of GC chromatogram (IDGC) of gasoline-, kerosene- and diesel-contaminated soils with different weathering periods(G forgasoline, K for kerosene, and D fordiesel).

Source oil / 0 d / 15 d / 30 d / 60 d
G1 / 0.31 / 0.61 / 0.75 / 0.76 / 0.92
G2 / 0.25 / 0.71 / 0.75 / 0.76 / 0.85
G3 / 0.26 / 0.61 / 0.74 / 0.76 / 0.84
G4 / 0.25 / 0.64 / 0.74 / 0.77 / 0.84
G5 / 0.27 / 0.62 / 0.74 / 0.81 / 0.83
G6 / 0.27 / 0.66 / 0.75 / 0.82 / 0.85
G7 / 0.23 / 0.63 / 0.75 / 0.84 / 0.83
K1 / 0.05 / 0.16 / 0.43 / 0.50 / 0.65
K2 / 0.05 / 0.22 / 0.43 / 0.54 / 0.68
D1 / 0.98 / 1.09 / 1.56 / 1.78 / 2.27
D2 / 0.81 / 0.97 / 1.48 / 1.77 / 2.21
D3 / 0.89 / 0.98 / 1.44 / 1.88 / 2.19
D4 / 0.95 / 0.98 / 1.55 / 1.80 / 2.36
D5 / 0.96 / 1.01 / 1.15 / 1.77 / 1.98
D6 / 0.90 / 1.03 / 1.66 / 1.83 / 2.15
D7 / 0.88 / 0.97 / 1.57 / 1.83 / 2.28

Fig. S1. GC-FID chromatograms of refined petroleum products: (A) gasoline, (B) kerosene, and (C)diesel(G forgasoline, K for kerosene, and D fordiesel)

Fig. S2.GC-FID chromatogramof extract from uncontaminated soil.Arrows representtwopeaks at 21.2-21.6 and 28.8-29.2 min. which were excluded incalculatingRPAGC.

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