| Distribution, influence factors, and biotoxicity of environmentally persistent free radical in soil at a typical coking plant | |
Li, Qianqian; Dai, Lingwen; Wang, Mengjing; Su, Guijin ; Wang, Tieyu; Zhao, Xu; Liu, Xihui; Xu, Yulin; Meng, Jing; Shi, Bin
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| 2022-08-20 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
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| ISSN | 0048-9697 |
| Volume | 835Issue:0Pages:155493 |
| Abstract | Environmentally persistent free radicals (EPFRs) are emerging pollutants in contaminated soils and have attracted significant attention. Chinese coke production making a great contribution to the globe is increasingly identified as the non-ignorable source of EPFRs. However, the distribution level, influence factors, and biotoxicity of EPFRs at coking sites remain poorly understood. Herein, a typical coking plant in Tangshan, China, featuring two functional regions (the reconstructed project (RP) and elimination engineering (EE)) was used to study the existence of EPFRs. The spin density of the EPFRs in coking soils was 3.20 x 1020-3.11 x 1021 spins/g with g-factor values of 2.0020-2.0036. The EPFRs presented higher concentrations and g-factor values in RP region than in EE region, and a mixture of carbon-centered radicals and carbon-centered radicals with adjacent oxygen atoms as well as carbon centered radical was ascertained in the former and the latter, respectively. Correlation analysis and FT-ICR-MS results indicated that polycyclic aromatic hydrocarbons (PAH) together with other unsaturated hydrocarbons and condensed aromatic contaminants, might contribute to the EPFRs formation in the soils of RP region, whereas PAHs were the main source of EPFRs in EE region. Soil components were determined to investigate the influence factors in EPFRs formation. Cu and Fe2O3 were recognized as the markedly positive influence factors, while TOC had a negative impact on EPFR formation. Visible light irradiation can induce the transformation and generation of EPFRs. As representative contaminants, both toluene and 2-chlorophenol can create EPFRs in coking soil under visible light irradiation. The potential biotoxicity tests of Photobacterium phosphoreum T3 spp. showed that EPFRs from the soils diminished bacterial |
| Department | 环境纳米技术与健康效应重点实验室; 环境化学与生态毒理学国家重点实验室 ; 环境纳米技术与健康效应重点实验室; 环境化学与生态毒理学国家重点实验室 |
| Keyword | POLYCYCLIC AROMATIC-HYDROCARBONS DISSOLVED ORGANIC-MATTER DEGRADATION PAHS SURFACE PHOTODEGRADATION TRANSFORMATION GENERATION MINERALS BIOCHARS |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47652 |
| Collection | 环境纳米技术与健康效应重点实验室 |
| Corresponding Author | Su, Guijin |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effects, State Key Lab Environm Chem & Ecotoxicol, POB 2871, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.City Univ Hong Kong, State Key Lab Marine Pollut, Hong Kong, Peoples R China 4.Shantou Univ, Guangdong Prov Key Lab Marine Disaster Predict & P, Shantou 515063, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Qianqian,Dai, Lingwen,Wang, Mengjing,et al. Distribution, influence factors, and biotoxicity of environmentally persistent free radical in soil at a typical coking plant[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,835(0):155493. |
| APA | Li, Qianqian.,Dai, Lingwen.,Wang, Mengjing.,Su, Guijin.,Wang, Tieyu.,...&Shi, Bin.(2022).Distribution, influence factors, and biotoxicity of environmentally persistent free radical in soil at a typical coking plant.SCIENCE OF THE TOTAL ENVIRONMENT,835(0),155493. |
| MLA | Li, Qianqian,et al."Distribution, influence factors, and biotoxicity of environmentally persistent free radical in soil at a typical coking plant".SCIENCE OF THE TOTAL ENVIRONMENT 835.0(2022):155493. |
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