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使用PARAFAC技术探索塔扬河的溶解有机物多样性和水质

Mohammad-Ali Zazouli¹, Zeinab Gholami¹, Yalda Hashempour¹

¹Department of Environmental Health Engineering, School of Health, Mazandaran University of Medical Sciences, Sari, Iran.

|August 5, 2025

概括

这项研究分析了塔扬河中溶解的有机碳 (DOC),发现了季节性水质变化. 在EEM-PARAFAC方法中,DOM光与关键水质指标相联系.

科学领域:

环境化学环境化学
水生生态学水生生态学
水质监测水质监测

背景情况:

溶解有机物 (DOM) 显著影响水生生态系统,影响营养循环,污染物运输和微生物社区结构.
了解溶解有机碳 (DOC) 多样性对于评估和管理河流水质量至关重要.

研究的目的:

调查溶解有机碳 (DOC) 的多样性及其对塔扬河流域水质参数的影响.
评估EEM-PARAFAC方法在将DOM光元件与水质指标联系方面的有效性.

主要方法:

从2023年3月到2024年2月,在塔扬河流域的十个站点每月取水样.
测量关键的水质参数:温度,溶解氧 (DO),度,电导率 (EC),化学氧需求 (COD),DOC,总 (TP),总 (TN) 和叶绿素-a.
应用PARAFAC技术来分析DOM的光激发发射矩阵 (EEM),确定七个光元件 (C1-C7).

主要成果:

观察到的季节性变化:冬季较低的EC,温度,度,TP和SUVA;春季最低的COD和DOC.
在春季记录的最高TN和叶绿素-a水平.
7号站显示了高度的EC,温度,DOC,COD和TP.
组件C1 (湿性物质) 与温度,叶绿素a,TN,TP,UV254和COD有强烈的正相关性.

结论:

对于评估DOM光元件与水质参数之间的关系,EEM-PARAFAC方法是有效的.
这种方法具有显著的潜力,可以加强河流系统的地表水质监测.
这些发现突出了塔扬河流域水质的季节和空间变化,受DOC特征的影响.

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