消费者复合物的金属,微塑料和其他微观碎片污染
1School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, PL4 8AA, UK.
Environmental science and pollution research international
|September 22, 2024
概括
消费者堆肥被微塑料和微纤维素广泛污染,以及像这样的金属. 这些颗粒,包括纤维和各种塑料类型,存在于所有样本中,其含量与颗粒多样性有关.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 消费者堆肥在园艺中被广泛使用,但它们的颗粒和化学污染情况尚不清楚.
- 人为粒子,包括微塑料和微纤维素,是新兴的环境污染物.
- 铜,和等金属是常见的环境污染物,具有潜在的生态毒理学影响.
研究的目的:
- 量化英国消费者复合材料中的人为微纤维素 (AMC),微塑料 (MP) 和相关金属.
- 描述园艺复合物中发现的AMC和MP的类型和多样性.
- 研究颗粒污染,金属度和堆肥特性之间的关系.
主要方法:
- 微观分析用于在12个不同的堆肥样本中识别和量化AMC和MP.
- 使用能量分散式X射线光谱测量来确定Cu,Zn和Pb的度.
- 进行了统计分析,以探索颗粒类型,金属含量和堆肥特征之间的相关性.
主要成果:
- 所有的堆肥样本都含有AMC和MP,其度高达1100kg-1 dw.
- 主要是 rayon 和棉纤维的 AMC 比以石油为基础的 MP 更为丰富.
- 议员们展示了各种形状和聚合物类型 (聚烯,PET,PVC,树脂,油漆,).
- 金属度 (Cu,Pb,Zn) 分布异质,平均分别为52.4,192和51.6毫克/公斤-1天.
- 在含量和人为颗粒的多样性之间发现了显著的正相关性.
结论:
- 消费者堆肥是微塑料和微纤维素材料的重要环境沉池.
- 在堆肥中存在各种人为颗粒和金属,引发了对潜在生态影响的担忧.
- 需要进一步的研究来了解这些污染物对植物生长和土壤生态系统的生态毒理学影响.
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