不同来源溶解性有机质光谱性能研究  

Spectral Properties of Dissolved Organic Matter from Different Sources

作　　者：马哲 陈金楠 耿莘惠 Ma Zhe;Chen Jinnan;Geng Xinhui(Shenyang Urban Construction University,School of Municipal and Environmental Engineering,Shenyang 110167,China)

机构地区：[1]沈阳城市建设学院市政与环境工程学院,辽宁沈阳110167

出　　处：《环境科学与管理》2025年第3期49-54,共6页Environmental Science and Management

基　　金：辽宁省教育厅2023年度高校基本科研项目(JYTQN2023377);2024年度沈阳城市建设学院科研发展基金重点项目XKJ-ZD-202402;2024年度沈阳城市建设学院科研发展基金一般项目XKJ-YB-202409。

摘　　要：溶解性有机质(DOM)构成了天然水的关键部分,DOM在调控环境气候变动和推动全球碳循环方面具有显著效果。由于海洋中盐分含量相对较高,从海洋中提取DOM存在着巨大的挑战和技术壁垒,有关海水源与淡水源DOM的光谱性能对比研究还鲜有报道。研究了提取于黄海海水中的DOM和两种淡水DOM的光谱特征、分子量分布、荧光指数等,揭示了不同来源DOM在pH及光照条件下,一系列的物理化学特性的变化趋势,有助于更好地理解DOM的环境行为,为DOM来源追踪及环境污染预测和治理提供新的思路和方法。Dissolved organic matter(DOM)constitutes a key part of natural water.DOM has a significant effect in regulating environmental climate changes and promoting the global carbon cycle.Due to the relatively high salt content in the ocean,there are huge challenges and technical barriers to extract DOM from the ocean.There are few reports on the comparative study of spectral properties of DOM from sea water and freshwater sources.The spectral characteristics,molecular weight distribution and fluorescence index of DOM extracted from the Yellow Sea seawater and two kinds of freshwater DOM were studied.The changes of a series of physical and chemical properties of DOM from different sources under pH and light conditions were revealed.It is helpful to better understand the environmental behavior of DOM and provide new ideas and methods for DOM source tracking and environmental pollution prediction and control.

关 键 词：溶解性有机质 PH 三维荧光光谱 

分 类 号：X522[环境科学与工程—环境工程]