从农田土壤中分离和识别传统的微塑料
Siyang Ren1, Martine Graf2, Kai Wang3
1State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences; National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions of Ministry of Education, National Observation and Research Station of Agriculture Green Development (Quzhou, Hebei), China Agricultural University; School of Environmental & Natural Sciences, Bangor University.
Journal of visualized experiments : JoVE
|April 7, 2025
概括
这项研究引入了一个具有成本效益的协议,用于提取和识别土壤中的微塑料 (MP). 该方法确保了高回收率,促进了对可靠的环境数据的标准化土壤MP分析.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 土壤科学 土壤科学
背景情况:
- 陆地生态系统中的微塑料 (MP) 污染日益令人担忧,许多研究调查了MP的存在和对土壤和作物健康的影响.
- 由于提取和分析方法的多样性,当前的研究面临着挑战,这阻碍了结果的可比性和为政策和行业提供可靠的证据.
研究的目的:
- 为采样,分离和化学识别土壤中常规的MP提供一个标准化,低成本的协议.
- 提高土壤PM分析的可行性,适用性和成本效益,以便广泛采用.
主要方法:
- 使用无塑料工具收集的土壤样本 (0-30厘米).
- 用聚乙烯 (PE) -MPs进行量化的模拟土壤类型.
- 使用和化 (NaCl) 溶液和用氧化 (NaOH) 的有机消化进行密度分离.
- 通过尼罗河红色染色和光显微镜进行量化.
- 使用微福里埃转换红外光谱 (μ-FTIR) 或激光直接红外光谱 (LDIR) 进行聚合物识别.
主要成果:
- 在不同的模拟土壤介质中实现了83%至90%的MP恢复率.
- 该协议旨在实现操作方便,使用易于获得的材料.
结论:
- 开发的协议提供了一种高效,具有成本效益和可行的土壤MP分析方法.
- 标准化土壤PM分析方法将改善数据的可比性,并支持科学研究和政策决策.
- 附带的视频为虚拟学习和应用提供了逐步指导.
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