在水产养殖池和河口系统中对的颗粒大小进行分离
Xiangcheng Kong1, Chongyang Wang1, Sarah E Rice1
1Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA.
Water research
|August 27, 2025
概括
水产养殖池的纳米粒子结合 (P) 比河口系统多,影响藻类的繁殖. 这种被忽视的P分数可能会通过影响P的可用性来限制开花的发展.
科学领域:
- 环境科学
- 水生化学
- 生物地质化学
背景情况:
- (P) 循环在水生生态系统中至关重要.
- 不同水生系统中纳米粒子结合P的行为尚未得到充分理解.
- 像切萨皮克湾这样的水产养殖池和河口系统代表着截然不同的水生环境.
研究的目的:
- 为了比较负载和微粒的物种化在缩水产池和切萨皮克湾河口系统.
- 描述的粒子大小依赖的分布和物种化.
- 研究纳米粒子结合在控制藻类繁殖中的作用.
主要方法:
- 在水柱中对P负荷和物种化的比较研究.
- 粒子大小分离, 赫德利的序列提取, 和微观观察.
- 分析不同颗粒大小的无机P (Pi) 和有机P (Po) 分数.
主要成果:
- 与河口系统相比,水产养殖池的粒子负载和合物和纳米粒子相关的P量更高.
- 在池中超过70%的无机P (Pi) 和有机P (Po) 与小于100nm的粒子有关.
- 在高P水产养殖池中,结合的纳米颗粒P是主导形式,与水硬度和溶解氧相关.
结论:
- 纳米粒子结合的,特别是Ca结合的形式,在水产养殖池中的动态中起着重要作用.
- 与纳米颗粒相关的微粒和溶解的有机P分量,而不是大型藻类,可以控制池中的藻类繁殖.
- 被忽视的与Ca结合的纳米颗粒P分量有潜力通过影响微生物降解和P生物可用性来抑制藻类繁殖.
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