Version 1
: Received: 29 August 2023 / Approved: 29 August 2023 / Online: 29 August 2023 (13:16:06 CEST)
How to cite:
Lee, J.; Choi, B.; Yang, H.; Lee, K.; Heo, T.; Jho, E.; Song, D.; Lee, S. A Study on the Calculation of TEQ and MEQ of 16 PAHs in Kuwait’s Crude Oil-Contaminated Soil and Ecotoxicity Assessment of Bioluminescent Bacteria. Preprints2023, 2023081994. https://doi.org/10.20944/preprints202308.1994.v1
Lee, J.; Choi, B.; Yang, H.; Lee, K.; Heo, T.; Jho, E.; Song, D.; Lee, S. A Study on the Calculation of TEQ and MEQ of 16 PAHs in Kuwait’s Crude Oil-Contaminated Soil and Ecotoxicity Assessment of Bioluminescent Bacteria. Preprints 2023, 2023081994. https://doi.org/10.20944/preprints202308.1994.v1
Lee, J.; Choi, B.; Yang, H.; Lee, K.; Heo, T.; Jho, E.; Song, D.; Lee, S. A Study on the Calculation of TEQ and MEQ of 16 PAHs in Kuwait’s Crude Oil-Contaminated Soil and Ecotoxicity Assessment of Bioluminescent Bacteria. Preprints2023, 2023081994. https://doi.org/10.20944/preprints202308.1994.v1
APA Style
Lee, J., Choi, B., Yang, H., Lee, K., Heo, T., Jho, E., Song, D., & Lee, S. (2023). A Study on the Calculation of TEQ and MEQ of 16 PAHs in Kuwait’s Crude Oil-Contaminated Soil and Ecotoxicity Assessment of Bioluminescent Bacteria. Preprints. https://doi.org/10.20944/preprints202308.1994.v1
Chicago/Turabian Style
Lee, J., Deokjong Song and Sungjong Lee. 2023 "A Study on the Calculation of TEQ and MEQ of 16 PAHs in Kuwait’s Crude Oil-Contaminated Soil and Ecotoxicity Assessment of Bioluminescent Bacteria" Preprints. https://doi.org/10.20944/preprints202308.1994.v1
Abstract
The oil spilled from the Gulf war caused land pollution and various petroleum compounds. Among petroleum compounds, polycyclic aromatic hydrocarbons (PAHs) are known for toxicity, and have been designated as carcinogenic, mutagenic, and endocrine disrupting substances by the United States Environmental Protection Agency (USEPA). According to the USEPA, toxic equivalents quotient (TEQ), and mutagenic equivalents quotient (MEQ) can be calculated by multiplying the toxic equivalency factor (TEF) and mutagenic equivalency factor (MEF) by the concentration of PAHs. The USEPA calculates the relative TEF for other PAHs by setting the TEF value of benzo(a)pyrene, which is highly toxic, to 1. Relative MEF is also calculated in the same way. In this study, the TPH concentrations of crude oil-contaminated soils collected from the Burgan in Kuwait were measured to be 5, 8, and 20% and TEQ and MEQ of the soils were calculated by multiplying the 16 PAHs concentrations measured for each sample by TEF and MEF, respectively. When the TPH concentration was increased by 4 times from 5% to 20%, the TEQ was increased by about 9 times and the MEQ was increased by about 10 times. Therefore, it was concluded that as the TPH concentration increases, the carcinogenicity and mutation rate increase greatly. In addition, ecotoxicity assessment was performed using luminescent bacteria to compare the relationship between the calculated TEQ and MEQ and actual ecotoxicity, and benzo(a)pyrene among 16 PAHs showed a coefficient of determination of 0.95. In this study, ecotoxicity in PAHs-contaminated environment can be estimated by analyzing benzo(a)pyrene as a representative substance.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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