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洞察在度变化扰动下溶解有机物成分的动态

Liming Jia¹, Qi Yang², Hongyang Cui³

¹School of Water Resources and Environment, China University of Geosciences, Beijing 100083, People's Republic of China; Jixi Ecological Environment Monitoring Center, Heilongjiang Province 158305, People's Republic of China.

Ecotoxicology and environmental safety

|November 28, 2023

概括

溶解有机物 (DOM) 的动态沿着度变化进行了研究. 在DOM组件中的单个光体显示出不同的反应,与诸如总 (TP) 等营养物质的转移有关.

科学领域:

环境化学环境化学
水生生态系统科学水生生态系统科学
频谱学是一种光谱学.

背景情况:

溶解有机物 (DOM) 对于水生生态系统中的营养和污染物运输至关重要.
了解DOM组件动态与变化的度是必不可少的,但在很大程度上没有解决.
高类物质的河流需要对DOM命运进行具体的调查.

研究的目的:

为了评估DOM组件的组成和动态,沿着一个度梯度.
为了研究已识别的DOM组件中的单个光体行为.
探索黑龙江河的DOM和营养参数之间的关系.

主要方法:

使用并行因素分析 (PARAFAC) 来识别DOM组件.
二维相关谱 (2DCOS) 分析了激发负载数据.
在采样地点测量了基本的营养参数 (例如,总).

主要成果:

在每个地点确定了两个PARAFAC组件 (C1,C2).
组件中的单个光体表现出与度的非均方向变化.
组件C1与化学氧气需求 (COD) 和生物化学氧气需求 (BOD5) 有显著的相关性.
DOM峰A1和A2的演变与总 (TP) 的变化有关.

结论:

DOM的组成和动态表现出对度变化的复杂反应.
在DOM组件内光体反应的异质性使整体动态变得复杂.
DOM组件,特别是C1,显著影响水质参数,如COD和BOD5.
营养动态,特别是TP,与特定DOM分量的演变交织在一起.

关键词:

在 2DCOS 中,溶解的有机物质是有机物质.在 EEM-PARAFACAC 中.内在的进化是内在的进化.度扰动度扰动

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