相关实验视频

Updated: Jul 27, 2025

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment

Published on: July 22, 2019

体碎片诱导了中国图江河的沉积释放

Changling Liu^1,2, Xianfan Yuan^3,4,5, Yuqiong Li³

¹POWERCHINA Chengdu Engineering Corporation Limited, Chengdu, 611130, China. Liuchangling_2011@163.com.

Bulletin of environmental contamination and toxicology

|June 7, 2023

概括

水植物碎片的分解会从河流沉积物中释放 (P). 这一过程将有机P转化为可生物利用的形式,从而增加P度并加速水生生态系统中的化.

科学领域:

环境化学环境化学
水生生态学水生生态学
生物地质化学生物地质化学

背景情况:

水植物分解是从河流沉积物中释放 (P) 的潜在来源.
在这个过程中,有机的运输和转化仍然不太清楚.

研究的目的:

研究由Alternanthera philoxeroides (A. philoxeroides) 的分解引起的沉积物P释放的过程和机制.
确定释放的有机的形式及其转化为可生物利用的形式.

主要方法:

在实验室内化A. philoxeroides碎片与河流沉积物.
在水-沉积物界面上监测物理化学参数 (减氧潜力,溶解氧).
随着时间的推移,在覆盖的水中分析分数 (可溶的反应性P,溶解的总P,总P,Mono-P,Diesters-P,Ortho-P).

主要成果:

氧化还原潜力和溶解氧的快速减少,导致无氧状况.
溶性反应性P,溶解总P和总P度在上面的水中显著增加.
沉积物有机P (Mono-P,Diesters-P) 的释放及其转化为正酸盐 (Ortho-P),增加生物可用性P.

结论:

A. philoxeroides碎片的分解导致沉积物P在河流系统中的释放和转化.
这个过程贡献了本土的P,独立于外部流域输入.
接收水体的加快环氧化是可能的后果.

关键词:

在31P-NMR分析中,另一个类型是Alternanthera philoxeroides.分解分解是什么意思有机是一种有机.沉积物沉积物是一种沉积物.

更多相关视频

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading

Published on: March 6, 2014

Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events

Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events

Published on: November 7, 2017

相关概念视频

The Phosphorus Cycle

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.