通过自动化SEM-EDX颗粒分析方法在受控条件下释放的防涂层中的微塑料的表征
Matthias Bork1, Søren Kiil1, Petre-Flaviu Gostin1
1CoaST, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DTU, Building 229, Kongens Lyngby, 2800, Denmark.
Environmental pollution (Barking, Essex : 1987)
|October 15, 2025
概括
海洋防涂料在航行期间释放微塑料. 这项研究量化了在模拟航行下从游艇涂层中释放的粒子,揭示了释放率和粒子组成.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 海洋生物学 海洋生物学
背景情况:
- 微塑料对海洋生态系统构成重大威胁.
- 船舶船体上的防涂层是海洋微塑料的主要来源.
- 了解这些涂层中的微塑料释放机制对于缓解至关重要.
研究的目的:
- 在模拟航行过程中,从防涂层释放的微塑料颗粒量化.
- 描述释放的粒子的大小,数量和化学成分.
- 为了将颗粒的释放与防涂料的自我抛光行为相关联.
主要方法:
- 模拟的低速航行条件被用于在人造海水中暴露商业防游艇涂层.
- 采用了包括扫描电子显微镜和能量分散式X射线光谱 (SEM-EDX) 在内的自动化粒子分析.
- 随着时间的推移,对人工海水中的颗粒含量,大小和化学成分进行监测.
主要成果:
- 从防腐涂层中观察到微塑料颗粒的释放,并且在暴露期间增加.
- 大多数释放的粒子的直径相当于1-5μm.
- 颗粒主要由碳组成 (58%重量). ),氧气 (32%的重量). ),铜 (0-8%的重量). ) 和 (0-2%重量). ) 来自涂层的粘合剂和生物杀菌剂.
结论:
- 这项研究表明,在航行过程中,微塑料从防涂层中释放的直接途径.
- 颗粒物释放率与涂料的抛光特性有关.
- 这些发现有助于更好地了解来自海上活动的微塑料污染.
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