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Updated: Sep 16, 2025

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老化微塑料和相关液对的转化和从沉积物中释放的不同影响

Wenjuan He¹, Jinhui Huang¹, Si Liu¹

¹College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.

Journal of hazardous materials

|July 8, 2025

概括

陈旧的微塑料 (MP) 和它们的液通过改变微生物群落和P转化而改变淡水沉积物 (P) 循环. MPs可以增加P的释放,而液可能会抑制它,影响过度缩的风险.

科学领域:

环境科学环境科学
环境化学环境化学
生态生态学生态生态学

背景情况:

微塑料 (MPs) 在淡水沉积物中积聚,释放出液.
老年国会议员的液可能会改变沉积物营养循环.
(P) 是淡水缩的关键营养物质,但MP液的影响还没有得到充分研究.

研究的目的:

研究聚乙烯 (PE),聚乙烯 (PS) 和聚乙烯 (PVC) 浸出物对沉积物P循环的影响.
了解老年MP及其幼虫如何影响P转化和微生物群落的机制.

主要方法:

使用老年MP及其液进行了化和吸附实验.
分析P循环功能基因,溶解有机物 (DOM) 组成部分和微生物群落.
在覆盖水和沉积物中的P度的量化.

主要成果:

老年MP和液通过修改DOM和微生物群落来改变P循环基因表达.
主要机制涉及转化Al结合P到Fe (III) 结合P和有机P.
含有微生物可利用的有机物质的洗液显著增加了有机P.
老年MP增强了P释放,而液抑制了它,根据MP类型和年龄产生不同的效果.

结论:

陈旧的MP及其液对淡水沉积物P循环产生重大影响.
了解这些相互作用对于管理淡水缩至关重要.
国会议员和液代表了一条影响淡水营养动态的新途径.

关键词:

溶解的有机物质是有机物质.化物是一种化物.微生物社区的微生物社区.微塑料是一种微塑料.的物种.

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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.

Factors Affecting Solubility

Factors Affecting Solubility

Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide: