Distribution and bioaccessibility of polycyclic aromatic hydrocarbons in industrially contaminated site soils as affected by thermal treatment
文献类型：期刊论文
| 作者 | Cheng, Yuan; Sun, Hao; Yang, Entai; Lv, Jitao; Wen, Bei; Sun, Fujun; Luo, Lei; Liu, Zhengang |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021-06-05 |
| 卷号 | 411页码:- |
| 关键词 | PAHs Organic carbon speciation Thermal treatment Binding site Infrared microspectroscopy |
| ISSN号 | 0304-3894 |
| 英文摘要 | Thermal treatment can not only efficiently remove volatile pollutants but also distinctly alter the speciation of organic carbon (C) and the behaviors of residual pollutants in contaminated soils. Here we examined the distribution and bioaccessibility of polycyclic aromatic hydrocarbons (PAHs) in industrially contaminated site soils affected by thermal treatment (temperature ranging of 105?650 ?) using synchrotron-based infrared microspectroscopy and n-butanol extraction (a mild solvent extractant). In the pristine soils, the sequestration and distribution of PAHs were simultaneously controlled by aromatic C, aliphatic C and clay minerals. Desorption efficiency of PAHs was substantially increased with increasing temperature, whereas the residual PAHs were strongly immobilized within their binding sites evidenced by their dramatically decreased bioaccessibility. Aliphatic and carboxylic C were gradually decomposed and/or carbonized with increasing temperature. In contrast, aromatic C remained relatively recalcitrant during the thermal treatment and was the key controlling factor for the desorption of residual PAHs in the soils with either thermal treatment or n-butanol extraction. This study is the first to visualize the changes in the binding sites and bioaccessibility of PAHs induced by thermal treatment, which have important implications for understanding the sequestration mechanisms of organic pollutants in soil and optimizing the remediation technique. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45630]  |
| 专题 | 生态环境研究中心_固体废弃物处理与资源化实验室 |
| 作者单位 | 1.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110866, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Yuan,Sun, Hao,Yang, Entai,et al. Distribution and bioaccessibility of polycyclic aromatic hydrocarbons in industrially contaminated site soils as affected by thermal treatment[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,411:-. |
| APA | Cheng, Yuan.,Sun, Hao.,Yang, Entai.,Lv, Jitao.,Wen, Bei.,...&Liu, Zhengang.(2021).Distribution and bioaccessibility of polycyclic aromatic hydrocarbons in industrially contaminated site soils as affected by thermal treatment.JOURNAL OF HAZARDOUS MATERIALS,411,-. |
| MLA | Cheng, Yuan,et al."Distribution and bioaccessibility of polycyclic aromatic hydrocarbons in industrially contaminated site soils as affected by thermal treatment".JOURNAL OF HAZARDOUS MATERIALS 411(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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