Deciphering the Role of Microbial Extracellular and Intracellular Organic Matter in Antibiotic Photodissipation: Molecular and Fluorescent Profiling under Natural Radiation
文献类型：期刊论文
| 作者 | Kiki, Claude1,2,6; Yan, Xiaopeng1,6; Elimian, Ehiaghe A.4,5; Jiang, Bin3; Sun, Qian6 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2024-06-14 |
| 卷号 | 58期号:26页码:11661-11674 |
| 关键词 | microbial EOM and IOM DOMphotobleaching antibiotic natural photoattenuation phototransformation toxicity |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.4c01141 |
| 英文摘要 | This study addresses existing gaps in understanding the specific involvement of dissolved organic matter (DOM) fractions in antibiotic photolysis, particularly under natural conditions and during DOM photobleaching. Employing fluorescent, chemical, and molecular analysis techniques, it explores the impact of extracellular and intracellular organic matter (EOM and IOM) on the photodissipation of multiclass antibiotics, coupled with DOM photobleaching under natural solar radiation. Key findings underscore the selective photobleaching of DOM fractions, propelled by distinct chemical profiles, influencing DOM-mediated antibiotic photolysis. Notably, lipid-like substances dominate in the IOM, while lignin-like substances prevail in the EOM, each uniquely responding to sunlight and exhibiting selective photobleaching. Sunlight primarily targets fulvic acid-like lignin components in EOM, contrasting the initial changes observed in tryptophan-like lipid substances in IOM. The lower photolability of EOM, attributed to its rich unsaturated compounds, contributes to an enhanced rate of indirect antibiotic photolysis (0.339-1.402 h(-1)) through reactive intermediates. Conversely, the abundance of aliphatic compounds in IOM, despite it being highly photolabile, exhibits a lower mediation of antibiotic photolysis (0.067-1.111 h(-1)). The triplet state excited (DOM)-D-3* plays a pivotal role in the phototransformation and toxicity decrease of antibiotics, highlighting microbial EOM's essential role as a natural aquatic photosensitizer for water self-purification. These findings enhance our understanding of DOM dynamics in aquatic systems, particularly in mitigating antibiotic risks, and introduce innovative strategies in environmental management and water treatment technologies. |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001248670000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78393]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Sun, Qian |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100043, Peoples R China 2.Univ Abomey Calavi, Natl Inst Water, Cotonou, Benin 3.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, CAS Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 5.Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 1H, Canada 6.Chinese Acad Sci, Inst Urban Environm, CAS Key Lab Urban Pollutant Convers, Fujian Key Lab Watershed Ecol, Xiamen 361021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kiki, Claude,Yan, Xiaopeng,Elimian, Ehiaghe A.,et al. Deciphering the Role of Microbial Extracellular and Intracellular Organic Matter in Antibiotic Photodissipation: Molecular and Fluorescent Profiling under Natural Radiation[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2024,58(26):11661-11674. |
| APA | Kiki, Claude,Yan, Xiaopeng,Elimian, Ehiaghe A.,Jiang, Bin,&Sun, Qian.(2024).Deciphering the Role of Microbial Extracellular and Intracellular Organic Matter in Antibiotic Photodissipation: Molecular and Fluorescent Profiling under Natural Radiation.ENVIRONMENTAL SCIENCE & TECHNOLOGY,58(26),11661-11674. |
| MLA | Kiki, Claude,et al."Deciphering the Role of Microbial Extracellular and Intracellular Organic Matter in Antibiotic Photodissipation: Molecular and Fluorescent Profiling under Natural Radiation".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58.26(2024):11661-11674. |
入库方式： OAI收割
来源：广州地球化学研究所
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