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Updated: Jun 25, 2025

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Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

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组成调节溶解有机物吸附到铁 (氧) 氧化物及其与酸盐的竞争:对湖泊中的有机碳和固定的影响

ShuaiLong Wen¹, JingJing Liu¹, YueHan Lu²

¹State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Journal of environmental sciences (China)

|May 27, 2024

概括

藻类衍生的溶解有机物 (ADOM) 吸附铁 (氧) 氧化物 (FeOx) 比酸 (HA) 强,影响水生生态系统中的 (P) 循环.

科学领域:

环境化学环境化学
水上地球化学水上地球化学
生物地质化学生物地质化学

背景情况:

溶解有机物 (DOM) 的成分各不相同,影响其与铁 (氧) 氧化物 (FeOx) 等矿物质的相互作用.
DOM和 (P) 竞争在水生碳和P埋葬中的作用仍然不清楚.
藻类开花释放大量的藻类衍生的DOM (ADOM),可能会影响内部营养负载.

研究的目的:

研究ADOM和酸 (HA) 在FeOx上的吸附行为.
为了确定酸盐竞争对DOM和P吸附的影响.
了解DOM源和组成如何影响水生系统中的固定.

主要方法:

评估了ADOM和HA在酸盐存在或不存在的情况下对FeOx的吸附.
使用光谱技术分析DOM组成,以识别功能组和结构.
量化吸附能力和DOM和酸盐的组成变化.

主要成果:

FeOx对ADOM的吸附能力大于HA的吸附能力,在ADOM中优先吸附类似蛋白质和高度不和的含氧结构 (HUSO).
与HA相比,ADOM对酸盐吸附具有更强的抑制作用,这表明藻类来源的内部P负载潜力增加.
酸盐的存在通过抑制类似蛋白质的化合物吸附而改变了ADOM吸附,而HA组成基本上没有受到影响.

结论:

在很大程度上,DOM源和成分通过对FeOx的吸附来控制DOM和P的固定.
特定DOM分量的优先吸附可以改变DOM特征,可能解释各种水生环境之间的相似性.
本土ADOM释放可能会影响P循环,并复杂的修复工作在化的湖泊.

关键词:

吸附方式吸附方式吸附方式藻类溶解的有机物质.在FT-ICR MS中使用.分割分割分割分割分割分割分割分割分割分裂分裂分裂分裂分裂分裂分裂分裂分裂分裂分裂胺酸是一种胺酸.酸盐是一种酸盐.

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