孟加拉国水产养殖池中的微塑料:来源归因,污染负载和生态风险评估
Sarajit Sarker1, Abu Rayhan1, Md Jahid Hasan1
1Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh.
Marine pollution bulletin
|January 16, 2026
概括
微塑料污染了孟加拉国水产养殖池,其中纤维和聚乙烯是最常见的. 高污染水平带来了生态风险,迫切需要为可持续水产养殖采取缓解战略.
科学领域:
- 环境科学 环境科学
- 水生生态学 水生生态学
- 污染研究 污染研究
背景情况:
- 微塑料 (MP) 是普遍存在的全球污染物,影响水生生态系统.
- 关于孟加拉国淡水水产养殖池中MP污染的数据有限.
- 了解MP的发生对于评估水产养殖中的生态风险至关重要.
研究的目的:
- 调查MPs在孟加拉国Jashore的水产养殖池水和沉积物中的发生,分布,特征和风险.
- 为了确定占主导地位的MP类型,聚合物组成和潜在的污染源.
- 评估与淡水水产养殖中的MP污染相关的生态风险.
主要方法:
- 从64个水产养殖池收集了对联的地表水和沉积物样本.
- 使用湿过氧化物氧化和密度分离处理的样品.
- 通过光学显微镜分析了MP,并使用减弱总反射率-里埃变换红外光谱法 (ATR-FTIR) 确定了聚合物类型.
主要成果:
- 发现重要的MP度:沉积物中2533.00MPs/kg dw,水中219.69MPs/L.
- 纤维是主要的MP类型 (85.37%在水中,75.97%在沉积物中),主要是黑色的.
- 聚乙烯 (PE) 是最常见的聚合物;家庭废水和水产养殖活动被确定为主要来源.
结论:
- 孟加拉国Jashore的水产养殖池严重受到微塑料的污染.
- 高污染负载指数和生态风险评估表明存在相当大的环境威胁.
- 需要采取紧急缓解措施来保护淡水生态系统,并确保可持续的水产养殖实践.
更多相关视频
05:31Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
Published on: July 28, 2018
16.7K
06:46Accumulation and Distribution of Fluorescent Microplastics in the Early Life Stages of Zebrafish
Published on: July 4, 2021
5.4K
相关概念视频
Marine Microbial Ecology
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
Freshwater Microbial Ecology
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic systems...
Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
Sources of Food Contamination
Contamination of food by microbial agents and natural toxins poses significant risks to public health. These hazards can be introduced at various points across the food supply chain, ranging from environmental sources to processing and storage stages. Understanding these contamination pathways is critical for developing strategies to ensure food safety.Seafood is particularly vulnerable to contamination through both environmental exposure and microbial colonization. Toxins from harmful algal...
Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
