贝德莱:一种新的海洋环境中微塑料污染的生物指标
Elif Tuğçe Aksun Tümerkan1, Esengül Köse2, Sadi Aksu3
1Department of Food Processing-Food Technology, Ankara Yıldırım Beyazıt University, Vocational School of Health Services, Ankara, Turkey; AYBU Central Research Laboratory, Application and Research Center, Ankara Yıldırım Beyazıt Univer-sity, Ankara, 06010, Turkey.
Journal of environmental management
|November 10, 2023
概括
海是海洋生态系统中微塑料 (MP) 污染的有效指示. 这项研究发现,海积累了多样化的MP,其中较小的灰色颗粒最为普遍,为MP检测提供了可靠的生物指标.
科学领域:
- 海洋生物学 海洋生物学
- 环境科学 环境科学
- 生态毒理学 生态毒理学
背景情况:
- 微塑料 (MP) 污染是一个日益严重的环境问题,源于工业和家庭广泛使用塑料.
- 虽然在河流和雨水中研究了MP的生物积累,但对它们在海洋系统中的命运缺乏全面的了解.
- 过物种经常被用作生物指标,但对于海洋环境,需要采取更广泛的方法.
研究的目的:
- 为了研究微塑料 (MPs) 在海中的积累和特征,作为潜在的海洋生物指标.
- 为了在同一海洋区域内的表面海水,沉积物和海中比较MP污染水平和类型.
- 评估海适合在海洋生态系统中对海命运的整体评估.
主要方法:
- 从表面海水,沉积物和从相同的采样地点收集的海中提取了微塑料.
- 使用共聚焦微拉曼光谱法来确认提取的MP的身份.
- 使用扫描电子显微镜 (SEM) 分析了微塑料的形态.
主要成果:
- 微塑料的积累,聚合物类型,形状,颜色和大小在海水,沉积物和海之间有很大的差异.
- 在海中发现的灰色MP的度更高 (8.713.3%).
- 较小的MP (小于0.5毫米) 构成了海中MP负载的很大一部分 (43.456.8%).
- 与其他环境矩阵相比,海表现出更大的聚合物类型多样性 (六).
结论:
- 海作为有效的生物指标,用于评估海洋环境中的微塑料污染.
- 它们的分析提供了一种可靠,快速和时间效率高的方法来检测MP积累.
- 利用海是一种关键途径,可以更好地了解海洋生态系统中的MP分布和影响.
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
16.1K
08:11Ecotoxicological Effects of Microplastics on Bird Embryo Development by Hatching without Eggshell
Published on: August 14, 2021
4.5K
相关概念视频
01:30Environmental Applications of Microorganisms
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
01:30Marine 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...
01:18Deep Sea Microbial Ecology
The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches extending beyond...
01:26Microbial Bioremediation of Hydrocarbons
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...
01:27Bioplastics
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...
01:28Microbial 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...