在Sargassum藻浅生物质上积累的塑料碎片是不同的As (V) 和As (III) 形式的载体
Ana E Pradas Del Real1, Delphine Vantelon1, Charlotte Catrouillet2
1Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, 91190 Saint Aubin, France.
Journal of hazardous materials
|November 24, 2024
概括
藻中的塑料碎片含有. 这种可以转移到环境和生物体中,造成生态毒理风险并影响海藻价值化工作.
科学领域:
- 环境科学 环境科学
- 海洋生物学 海洋生物学
- 分析化学 分析化学
背景情况:
- 气花经常浅在海上,积累塑料碎片.
- 生态毒理影响和这种生物质的潜在利用是令人担忧的.
研究的目的:
- 为了研究在浅的萨尔加索生物质中发现的塑料碎片中的的形式和定位.
- 了解塑料作为海洋环境中转移载体的作用.
主要方法:
- 合成纳米X射线光 (nanoXRF) 用于确定元素分布.
- 纳米X射线吸收近边缘结构 (nanoXANES) 光谱分析了的物种化.
主要成果:
- (As) 被检测到在Sargassum内的塑料碎片中,存在于各种形式.
- 来自海水的酸盐 (酸) 被转化为八面体酸,然后在藻类中减少为酸.
- 在塑料上的藻类组织中与金属 (Si,K,Ca,Fe,Ni,Cu,Zn) 结合的,在分解或吸附的区域中与Ti或Cl结合.
结论:
- 塑料作为的载体,促进其转移到环境中,并带来生态毒理风险.
- 这些发现对于评估石积累对环境的影响和规划其可持续利用至关重要.
- 了解的物种化及其与塑料和藻类的关联对于越来越多的塑料污染和藻类繁殖而言至关重要.
相关概念视频
Red Algae
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
Bioremediation
18.2K
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.
18.2K
Overview of Algae
The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...


