광주지역 토양오염우려지역의 PAHs 농도 특성 연구 = Characteristics of PAHs Concentration in Soil Contamination Concerned Area of Gwangju

다국어 초록 (Multilingual Abstract)

The concentration levels and distribution characteristics of 16 polycyclic aromatic hydrocarbons (PAHs) were investigatedand evaluated for total 100 soil samples as a part of the survey on soil contamination in Gwangju. The results (median andrange) of T-PAHs (sum of 16 PAH concentrations), C-PAHs (sum of carcinogenic PAH concentrations) and T-TEQs (sumof 16 TEQ concentrations) were 20.8 (7.6~1158.1), 2.2 (N.D~509.6), and 0.3 (N.D~424.6) g/kg, respectively. There wasa positive correlation between C-PAHs/T-PAHs and T-TEQs/T-PAHs except one point where the concentration ofbenzo(a)pyrene was high. The ratios of the C-PAHs/T-PAHs were 31.7% for low molecular weight-PAHs and 68.3% forhigh molecular weight-PAHs, suggesting that PAHs generation mainly arose from combustion sources. The ratio ofisomers of individual PAHs, Phe/Ant, Flu/Pyr, Ant/(Ant+Phe), Flu/(Flu+Pyr), and BaA/(BaA+Chr), also confirmed thepredominance of PAHs from combustion activities. Statistical tracing of the source of PAHs through principal componentanalysis indicated that the main sources of combustion were automobile fuel and coal. The overall results of this studysuggested HMW-PAHs, T-PAHs, C-PAHs and T-TEQs should be separately evaluated to better assess the toxicity andenvironmental behavior of individual PAHs.

참고문헌 (Reference)

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