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Pollution Characteristics and Health Risks of PAHs and OPAHs in Coking Plant

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Title: Pollution Characteristics and Health Risks of PAHs and OPAHs in Coking Plant
Authors: LI Chenhui, MU Ling, WEI Ying, LI Xiaofan, LI Jiajie, FENG Chuanyang, LIU Ziye, JIANG Xin
Source: Taiyuan Ligong Daxue xuebao, Vol 56, Iss 4, Pp 768-776 (2025)
Publisher Information: Editorial Office of Journal of Taiyuan University of Technology, 2025.
Publication Year: 2025
Collection: LCC:Chemical engineering
LCC:Materials of engineering and construction. Mechanics of materials
LCC:Technology
Subject Terms: coking plant, polycyclic aromatic hydrocarbons (pahs) and oxygenated pahs, gas-solid distribution mechanism, health risk assessment, Chemical engineering, TP155-156, Materials of engineering and construction. Mechanics of materials, TA401-492, Technology
Description: [Purposes] This work is conducted to explore the pollution characteristics of pareat polycyclic aromatic hydrocarbons (pPAHs) and Oxygenated PAHs (OPAHs) in the ambient air in coking plants. [Methods] A typical coking plant in Shanxi Province was selected to analyze the pollution level, gas-solid distribution mechanism, and health risks of atmospheric PAHs. [Results] The results show that the average mass concentration of ∑16 pPAHs in the air of the plant area was 6.13±3.25 μg/m3, with phenanthrene, acenaphthene, and fluoranthene as the main components. The average mass concentration of ∑10OPAHs was 95.02±31.78 ng/m3, anthraquinone and 9- fluorenone were the most abundant compounds. The concentrations of pPAHs and OPAHs were obviously higher at night than those during the day. pPAHs and OPAHs mainly exist in gas phase, accounting for 55.31% and 50.45% of total pPAHs and OPAHs, respectively, and the gas-solid distribution is mainly dominated by absorption mechanism. The results of health risk assessment show that the carcinogenic risk index values of pPAHs in ambient air in coking plant are 7.91×10-5 during the day and 3.04×10-4 at night, which may have potential carcinogenic risk to workers in the plant area, and carcinogenic risk of pPAHs was significantly higher at night than that during the daytime. From the BaP equivalent toxicity equivalent concentration, it can be seen that benzo[a]pyrene contributes most to the toxicity of PAHs, followed by dibenzanthracene. Phenanthrene, acenaphthylene, benzo[a]pyrene, dibenzanthracene, and fluoranthene are recommended to be monitored as the primary pollutants for PAHs at the plant.
Document Type: article
File Description: electronic resource
Language: English
Chinese
ISSN: 1007-9432
Relation: https://tygye.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=6188b623-b599-4d62-8583-f0bd4b821449; https://doaj.org/toc/1007-9432
DOI: 10.16355/j.tyut.1007-9432.20240213
Access URL: https://doaj.org/article/8021f0fc2f114738b286db0d7e2c449a
Accession Number: edsdoj.8021f0fc2f114738b286db0d7e2c449a
Database: Directory of Open Access Journals
Description
Abstract:[Purposes] This work is conducted to explore the pollution characteristics of pareat polycyclic aromatic hydrocarbons (pPAHs) and Oxygenated PAHs (OPAHs) in the ambient air in coking plants. [Methods] A typical coking plant in Shanxi Province was selected to analyze the pollution level, gas-solid distribution mechanism, and health risks of atmospheric PAHs. [Results] The results show that the average mass concentration of ∑16 pPAHs in the air of the plant area was 6.13±3.25 μg/m3, with phenanthrene, acenaphthene, and fluoranthene as the main components. The average mass concentration of ∑10OPAHs was 95.02±31.78 ng/m3, anthraquinone and 9- fluorenone were the most abundant compounds. The concentrations of pPAHs and OPAHs were obviously higher at night than those during the day. pPAHs and OPAHs mainly exist in gas phase, accounting for 55.31% and 50.45% of total pPAHs and OPAHs, respectively, and the gas-solid distribution is mainly dominated by absorption mechanism. The results of health risk assessment show that the carcinogenic risk index values of pPAHs in ambient air in coking plant are 7.91×10-5 during the day and 3.04×10-4 at night, which may have potential carcinogenic risk to workers in the plant area, and carcinogenic risk of pPAHs was significantly higher at night than that during the daytime. From the BaP equivalent toxicity equivalent concentration, it can be seen that benzo[a]pyrene contributes most to the toxicity of PAHs, followed by dibenzanthracene. Phenanthrene, acenaphthylene, benzo[a]pyrene, dibenzanthracene, and fluoranthene are recommended to be monitored as the primary pollutants for PAHs at the plant.
ISSN:10079432
DOI:10.16355/j.tyut.1007-9432.20240213