Effects of sedimentary organic matter degradation and structure on nonylphenol degradation by sodium persulfate
文献类型：期刊论文
| 作者 | Zhang, Yongli1,2,3; Kong, Xianglan1,2,3; Yang, Yu2,3; Ran, Yong2,3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-12-15 |
| 卷号 | 904页码:10 |
| 关键词 | Benzene ring-C-14 labeled 4-nonylphenol(C-14-NP) Solid-state C-13 nuclear magnetic resonance (SS-NMR) Organic carbon structure |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2023.166754 |
| 英文摘要 | The structure and constituents of sedimentary organic matter (SOM) in the degradation of benzene ring-C-14 labeled 4-nonylphenol (C-14-NP) by sodium persulfate (Na2S2O8) were investigated. Na2S2O8 mineralized over 84 % of C-14-NP to (CO2)-C-14, and no parent unlabeled 4-nonylphenol (NP) compounds were detected in the water-soluble/supernatant phase or extractable residues. Organic carbon (OC) was sequentially separated from six sediment samples collected from the Pearl River (BET), estuary (GSD), continental shelf (S11 and S21), and deep sea (M9 and M10). Demineralized OC (DM), unstable OC (USOC), nonhydrolyzable OC (NHC), and resistant OC (ROC) were obtained and characterized using solid-state C-13 nuclear magnetic resonance (SS-NMR). The correlations among USOC, NHC, and the degradation kinetic constant of C-14-NP (k(NP)) were significant (R-2 > 0.86, p < 0.01), indicating that USOC and NHC were the main factors controlling C-14-NP degradation. SOM structure and constituent analyses indicated that O-alkyl C + OCH3/NCH C + COO/NC=O C and carbohydrate + protein were positively related to Ln(k(NP)) (R-2 > 0.72, p < 0.05) because these structures were unstable. However, the stable structures (Alkyl C and Arom CC) and constituents (sporopollenin, algaenan, and char) hindered C-14-NP degradation because they were negatively related to Ln(k(NP)) (R-2 > 0.81, p < 0.05). The OC removal rate was positively correlated with C-14-NP degradation (R-2 > 0.86, p < 0.01), indicating that the NP was primarily degraded in parallel with the breakdown of SOM. Stoichiometric analysis showed that Na2S2O8 effectively oxidized over 58 % of the OC to CO2, and the electron transfer efficiency was 17.2-69.5 %. This study is the first to emphasize the importance of SOM degradation, structure, and constituents in the degradation of NP by persulfate. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001081422600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74914]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Ran, Yong |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Organ Geochem,Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Poll, Guangdong Prov Key Lab Environm Protect & Resourc, Hong Kong 510640, Guangdong, Peoples R China 3.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yongli,Kong, Xianglan,Yang, Yu,et al. Effects of sedimentary organic matter degradation and structure on nonylphenol degradation by sodium persulfate[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,904:10. |
| APA | Zhang, Yongli,Kong, Xianglan,Yang, Yu,&Ran, Yong.(2023).Effects of sedimentary organic matter degradation and structure on nonylphenol degradation by sodium persulfate.SCIENCE OF THE TOTAL ENVIRONMENT,904,10. |
| MLA | Zhang, Yongli,et al."Effects of sedimentary organic matter degradation and structure on nonylphenol degradation by sodium persulfate".SCIENCE OF THE TOTAL ENVIRONMENT 904(2023):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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