Jo, Jungman Ahn, Yongtae Pandi, Kalimuthu Pyo, Heesoo Kim, Naeun Yun, Seong-Taek Kim, Minseok Lee, Jeongae Choi, Jaeyoung 2024-01-19T15:03:18Z 2024-01-19T15:03:18Z 2021-09-05 2021-04 2075-163X https://pubs.kist.re.kr/handle/201004/117217 Chemical accidents have frequently occurred in South Korea as a result of the huge amount of chemicals being used in various industries. Even though fire accidents accounted for 71.9% of chemical accidents during 2008-2018 in South Korea, most ecological research and investigation has focused on leakage accidents since most fire or explosion gases are diffused out and disappear into the atmosphere. In this study, the possibility of soil contamination by toluene combustion is proposed. A fire simulation batch test was performed and identified the combustion by-products such as methylbenzene, ethylbenzene, ethynylbenzene, benzaldehyde, 1-phenyl-1-propyne, naphthalene, 2-methylindene using gas chromatography coupled with mass spectrometry (GC-MS). Naphthyl-2-methyl-succinic acid, a metabolic intermediate of naphthalene metabolism derived from the combustion product of toluene, was also discovered in field soil and the secondary metabolites such as streptomycin 6-phosphate, 3-Nitroacrylate, oxaloacetate using LC-MS. Moreover, Streptomyces scabiei, participating in naphthalene metabolism, was also discovered in filed soil (contaminated soil) using 16s rRNA sequencing. As a result, bacterial stress responses in field soil (contaminated soil) affected by gas cloud were identified by discovering metabolites relating to bacterial self-defense action such as fatty biosynthesis. This study draws a conclusion that soil can be polluted enough to affect bacteria by gas cloud and soil bacteria and can encounter stress for a long term even though toluene and its combustion products had already decomposed in soil. English MDPI POLYCYCLIC AROMATIC-HYDROCARBONS DEGRADATION ACID Assessment of Soil Contamination by Gas Cloud Generated from Chemical Fire Using Metabolic Profiling and Associated Bacterial Communities Article 10.3390/min11040372 1 MINERALS, v.11, no.4 MINERALS 11 4 scie scopus 000643328700001 2-s2.0-85103403148 Geochemistry & Geophysics Mineralogy Mining & Mineral Processing Geochemistry & Geophysics Mineralogy Mining & Mineral Processing Article POLYCYCLIC AROMATIC-HYDROCARBONS DEGRADATION ACID combustion toluene chemical accident metabolomics 16s rRNA