在西南太平洋追踪微塑料和相关的生态风险
Tatiana Recabarren1, Mariett Torres1, Camila Jacobsen1
1Facultad de Ingeniería, Universidad San Sebastián, Concepción, Chile.
Marine pollution bulletin
|August 26, 2025
概括
在智利海岸进行了微塑料污染评估, 发现有纤维状塑料,主要是PET和PE,与工业活动相关的化学特征.
科学领域:
- 环境科学
- 海洋生物学
- 化学海洋学
背景情况:
- 微塑料 (MP) 污染是一个日益严重的全球问题,影响海洋生态系统.
- 了解MP的分布和特征对于评估环境风险至关重要.
- 智利海岸,特别是中南部地区,缺乏全面的PM污染数据.
研究的目的:
- 评估西南太平洋海岸1000公里的微塑料污染.
- 描述MP的物理 (大小,颜色,形状) 和化学 (聚合物类型) 特性.
- 确定智利6个河口的环境指纹和生态风险.
主要方法:
- 在智利海岸沿线使用曼塔拖网进行地表水采样 (2024年夏季).
- 塑料颗粒的量化和物理特征 (大小,颜色,形状).
- 使用富里埃变换红外光谱 (FTIR) 和μFTIR进行化学表征.
主要成果:
- 在所有六个样本河口都检测到微塑料,其度在9,000~115,000颗粒/公里2.
- 从智利南部到中部的沿海地区观察到MP的下降趋势.
- 纤维 (> 80%) 是主要的形状,黑色和蓝色是主要的颜色,小尺寸 (<2.5 mm) 主要. 聚乙烯二甲 (PET) 和聚乙烯 (PE) 是最常见的聚合物.
- 聚合物度被认为是危险的,聚合物模式表明工业和河流的影响.
结论:
- 这项研究为智利中南部沿海地区的微塑料污染提供了第一个证据.
- 已识别的PM特征及其空间分布提供了有关污染源和环境影响的见解.
- 需要进一步的研究来评估对太平洋及其生物多样性的生态影响.
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