松花江吉林市段溶解性有机质荧光光谱特征
Fluorescence Spectral Characteristics of Dissolved Organic Matter in Jilin Section of Songhua River
邹继颖 1和浩楠 1陈文慧 1刘辉 1翁士睿 2邱泽祖1
作者信息
- 1. 吉林化工学院资源与环境工程学院,吉林吉林 132022
- 2. 吉林化工学院资源与环境工程学院,吉林吉林 132022;上海东振环保工程技术有限公司,上海 201203
- 折叠
摘要
溶解性有机质(DOM)广泛存在于自然界的水生态系统中,是水相有机物的主要组成部分.参与水生态系统各种生物地球化学过程,对水生态系统结构与功能具有重要影响,是环境科学研究的热点和难点.为探讨松花江DOM的存在形态,通过对松花江吉林市段水环境DOM的三维荧光光谱测定,并分析松花江吉林市段FDOM的丰度、荧光峰和荧光参数,利用荧光区域积分法解析DOM的三维荧光光谱,得出DOM的结构组成特征.结果表明,城市集中区和工业区河流水体具有较高的荧光溶解性有机质(FDOM)浓度,水体中DOM具有4个荧光峰,工业区河流的DOM的荧光峰显示出类腐殖质组分含量高,城市集中区的河流DOM的荧光峰显示具有较高的类蛋白荧光峰.城市集中区和工业区河流的DOM也具有较高的荧光指数(FI)、腐殖化指数(HIX)和自生源指数(BIX).通过荧光区域积分法分析,河流DOM的腐殖酸类物质最高,富里酸类物质和溶解性微生物代谢产物次之.
Abstract
Dissolved organic matter(DOM)is widely present in the water ecosystems of the natural world and is a major component of organic matter in aqueous phase.It participates in various biogeochemical processes in water ecosystems and has a significant impact on the structure and function of water ecosystems,making it a hotspot and a difficult point of research in environmental science.In order to explore the existence form of DOM in the Songhua River,the three-dimensional fluorescence spectrum of DOM in the water environment of Songhua River,Jilin City section was measured,and the abundance,fluorescence peaks and fluorescence parameters of FDOM in the Songhua River,Jilin City section were analyzed.The DOM's three-dimensional fluorescence spectrum was resolved by using the fluorescence region integration method,and the structural composition characteristics of DOM were obtained.The results show that the rivers in the urban concentrated area and industrial area have higher FDOM concentrations,and the water body DOM has four fluorescence peaks.The DOM fluorescence peak of the industrial river shows high content of humic-like substances,and the DOM fluorescence peak of the urban concentrated area river shows high content of protein-like fluorescence.The DOM in the rivers of the urban concentrated area and industrial area also has higher fluorescence index(FI),humification index(HIX)and autochthonous source index(BIX).Through the analysis by the fluorescence region integration method,the highest content of humic-like substances in the river DOM,followed by fulvic acid-like substances and dissolved microbial metabolic products.
关键词
松花江/溶解性有机质/三维荧光/荧光区域积分法Key words
songhua river/soluble organic matter/three-dimensional fluorescence/fluorescent region integration引用本文复制引用
出版年
2024
NETL
NSTL
万方数据