气候变化领域集成服务门户(CCPortal): The structural transformation reversibility of biogas slurry derived dissolved organic matter and its binding properties with norfloxacin under temperature fluctuation

CCPortal

DOI	10.1016/j.ecoenv.2024.115953
	The structural transformation reversibility of biogas slurry derived dissolved organic matter and its binding properties with norfloxacin under temperature fluctuation
	Fan, Jinluo; Ge, Chengjun; Li, Ailing; Ren, Guoliang; Deng, Hui; Wu, Dongming; Luo, Jiwei; He, Yanhu; Zhao, Yuanyuan; Li, Jiatong; Feng, Dan; Yu, Huamei
发表日期	2024
ISSN	0147-6513
EISSN	1090-2414
起始页码	271
卷号	271
英文摘要	The widespread use of biogas slurry could potentially raise the environmental risk of antibiotics. Dissolved organic matter (DOM), as the most active part of biogas slurry, was able to interact with antibiotics and play a crucial role in the structure and function of soil and aquatic ecosystems. The recent shifts in global climate patterns have garnered significant attention due to their substantial impact on temperature, thereby exerting a direct influence on the characteristics of DOM and subsequently on the environmental behavior of antibiotics. However, there is limited research concerning the impact of temperature on the binding of DOM and antibiotics. Thus, this study aimed to explore the temperature-dependent structural transformation and driving factors of biogas slurry-derived DOM (BSDOM). Additionally, the binding characteristics between BSDOM and the commonly used antibiotic norfloxacin (NOR) at different temperatures were studied by using multi spectroscopic methods and two-dimensional correlation spectroscopy (2D-COS) analysis. The results suggested that the temperature-dependent structural transformation of BSDOM was reversible, with a slight lag in the transition temperature under cooling (13 degrees C for heating and 17 degrees C for cooling). Heating promoted the conversion of protein-like to humic-like substances while cooling favored the decomposition of humic-like substances. BSDOM and NOR were static quenching, with oxygen-containing functional groups such as C-O and -OH playing an important role. Temperature influenced the order of binding, the activity of the protein fraction, and its associated functional groups. At temperatures of 25 degrees C and 40 degrees C, the fluorescent components were observed to exhibit consistent binding preferences, whereby the humic-like component demonstrated a greater affinity for NOR compared to the protein-like component. However, the functional group binding order exhibited an opposite trend. At 10 degrees C, a new protein-like component appeared and bound preferentially to NOR, when no C-O stretch corresponding to the amide was observed. The finding will contribute to a comprehensive understanding of the interaction mechanisms between DOM and antibiotics under climate change, as well as providing a theoretical basis to reduce the environmental risks of biogas slurry and antibiotics.
英文关键词	DOM; Antibiotic; Structural transformation; Temperature; Spectral analysis; 2D-COS
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
WOS类目	Environmental Sciences ; Toxicology
WOS记录号	WOS:001166482700001
来源期刊	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305517
作者单位	Hainan University; Guangdong University of Technology; Hainan University; Hainan University; Chinese Academy of Tropical Agricultural Sciences; Chinese Academy of Tropical Agricultural Sciences
推荐引用方式 GB/T 7714	Fan, Jinluo,Ge, Chengjun,Li, Ailing,et al. The structural transformation reversibility of biogas slurry derived dissolved organic matter and its binding properties with norfloxacin under temperature fluctuation[J],2024,271.
APA	Fan, Jinluo.,Ge, Chengjun.,Li, Ailing.,Ren, Guoliang.,Deng, Hui.,...&Yu, Huamei.(2024).The structural transformation reversibility of biogas slurry derived dissolved organic matter and its binding properties with norfloxacin under temperature fluctuation.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,271.
MLA	Fan, Jinluo,et al."The structural transformation reversibility of biogas slurry derived dissolved organic matter and its binding properties with norfloxacin under temperature fluctuation".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 271(2024).