Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysis

Author:

Li Xiaxia12,Chai Beibei12ORCID,Wang Chao3,Li Hongtao4,Wu Yong4,Lei Xiaohui3,Chen Bin56

Affiliation:

1. a Collaborative Innovation Center for Intelligent Regulation & Comprehensive Management of Water Resources, College of Water Resources and Hydropower, Hebei University of Engineering, Handan 056038, China

2. b Hebei Key Laboratory of Intelligent Water Conservancy, College of Water Conservancy and Hydropower, Hebei University of Engineering, Handan 056038, China

3. c State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China

4. d Chengdu University of Technology, Chengdu 610059, China

5. e State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China

6. f Hebei Provincial Innovation Center for Water Pollution Control and Water Ecological Remediation, Hebei University of Engineering, Handan 056038, China

Abstract

Abstract Three-dimensional excitation–emission matrix fluorescence spectroscopy coupled with parallel factor analysis was adopted to investigate the characteristics of dissolved organic matter (DOM) components in water samples collected from the Tuojiang River Basin in Chengdu, including its main stream and tributaries. Four DOM components that matched with three fluorescence peaks were identified in the whole river basin and tributaries; while three components corresponding to four fluorescence peaks were identified in the main stream. In all cases, humic-like components accounted for high proportions of the DOM. Correlation analysis revealed the same sources for four components in the whole river basin and its tributaries, whereas two components had different sources in the main stream. Ultraviolet absorbance parameters (SUVA254, SR) and fluorescence parameters (BIX, HIX, FI, β:α) indicated the dominant autochthonous sources of DOM in the whole river basin. Higher terrestrial inputs of DOM were observed in the tributaries than in the main stream. In the areas influenced by human activities (6#, 17#, 18#), the sources of DOM showed strong terrestrial characteristics and high degrees of humification and aromatization, as well as serious pollution. The results of this study have potentially far-reaching implications for environmental water management in the area.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Hebei Province

Science Fund for Distinguished Young Scholars of Hebei Province

Publisher

IWA Publishing

Subject

Water Science and Technology,Environmental Engineering

Reference45 articles.

1. Insight into indicators related to the humification and distribution of humic substances in Sphagnum and peat at different depths in the Qi Zimei Mountains

2. Fluorescence spectral characteristics of fluorescent dissolved organic matter (FDOM) in the surface sediments from Lihu Lake;Chen;Environmental Science,2017

3. Characteristics and sources of DOM in lake sediments under different inundation environments;Chen;Environmental Science,2022

4. Characterization of dissolved organic matter in the Black Sea by fluorescence spectroscopy

5. Characterisation of the fluorescence from freshwater, planktonic bacteria

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3