...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Microplastics in Swiss Floodplain Soils
【24h】

Microplastics in Swiss Floodplain Soils

机译：瑞士洪泛区土壤中的微塑料

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Microplastics (MPs) are small (<5 mm diameter) but have clear implications for the environment. These artificial particles are found in and pose threats to aquatic systems worldwide. MPs have terrestrial sources, but their concentrations and fates in the terrestrial environment are poorly understood. While global plastic production continues to increase, so do the environmental concentrations and impacts of MPs. In this first study of MPs in floodplain soils, we developed a method for identifying, quantifying, and measuring the sizes of most commonly produced MPs in soil by FT-IR microscopy. For small MP (<1 mm) analysis, MP were separated by density separation and oxidation of organic matter. In this study we analyzed 29 floodplains in Swiss nature reserves associated with catchments covering 53% of Switzerland. We found evidence that 90% of Swiss floodplain soils contain MPs. The highest MP concentrations were associated with the concentration of mesoplastics (5 mm − 2.5 cm diameter), indicating plastic waste as source. Furthermore, MP concentration was correlated with the population of the catchment. The wide distribution of MPs, their presence in remote unsettled high mountain areas, decoupling of MEP and MP compositions, and the dominance of MPs by small (<500 μm diameter) particles, indicate that MPs enter soils via diffuse aeolian transport.
机译：微塑料（MPs）很小（直径小于5毫米），但对环境有明显影响。这些人造颗粒存在于全世界的水生系统中，并对其构成威胁。国会议员有陆地来源，但对他们在陆地环境中的集中度和命运知之甚少。尽管全球塑料产量继续增加，但环境浓度和国会议员的影响也在增加。在对洪泛区土壤中MP的首次研究中，我们开发了一种通过FT-IR显微镜鉴定，量化和测量土壤中最常见MP尺寸的方法。对于小的MP（<1 mm）分析，通过密度分离和有机物氧化分离MP。在这项研究中，我们分析了瑞士自然保护区中与29％的流域相关的29个洪泛区。我们发现有证据表明，瑞士90％的洪泛区土壤中含有MP。 MP的最高浓度与中塑料的浓度（直径5 mm-2.5 cm）有关，表明以塑料废物为源。此外，MP浓度与流域人口相关。 MP的广泛分布，它们在偏远未解决的高山地区的存在，MEP和MP成分的分离以及MP（由直径小于<500μm的颗粒）占主导地位，表明MP通过风沙传播进入土壤。

著录项

  • 来源
    《Environmental Science & Technology》 |2018年第6期|3591-3598|共8页
  • 作者

    Michael Scheurer; Moritz Bigalke;

  • 作者单位

    Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Berne, Switzerland;

    Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Berne, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号