一条小河中的微塑料:德国北部奥克尔河沿岸微塑料的出现及其影响因素。

IF 3.5 3区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Lina Büngener , Sarah-Maria Schäffer , Anja Schwarz , Antje Schwalb
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引用次数: 0

摘要

塑料对环境的污染主要集中在海洋方面。最近,人们开始关注淡水生态系统的污染问题,但来自人口适中的集水区小河流的信息仍然相对匮乏。本研究探讨了德国北部地区小河流奥克尔(流域面积 1822 平方公里,人口约 50 万,排水量约 12 立方米/秒)中的微塑料(MP)含量。在沿河采集的所有 10 个内流样本中都发现了 MP(尺寸范围在 0.3-5 毫米之间的纤维和碎片,通过显微镜进行鉴定),其范围在 28 到 134 个颗粒 m-3 之间,总体平均值为 63 个颗粒 m-3。在奥克尔小河中发现的 MP 浓度与中欧类似环境中较大河流的 MP 浓度相似或更高。平均而言,城市采样点(71 微粒/立方米)的 MP 浓度高于农村采样点(51 微粒/立方米)。在奥克集水区,溪流中 MP 浓度与集水区规模和人口等集水区尺度因素没有相关性或相关性较低。我们还在三个受潜在 MP 点源排放物直接影响的地点采集了样本,结果证实不同处理能力的污水处理厂和城市雨水下水道是 MP 的来源。我们的研究结果证实,小河流中的多溴联苯醚浓度受当地污染源的严重影响,并与流域面积和人口等因素呈线性叠加关系。这些结果表明,即使是人口密度适中的集水区内的小河流,其多溴联苯醚的浓度也可能相对较高,因此代表了环境中被低估的多溴联苯醚途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Microplastics in a small river: Occurrence and influencing factors along the river Oker, Northern Germany

Microplastics in a small river: Occurrence and influencing factors along the river Oker, Northern Germany

Microplastics in a small river: Occurrence and influencing factors along the river Oker, Northern Germany

Much attention regarding the environmental pollution by plastics had focused on the Oceans. More recently, contamination of freshwater ecosystems has been addressed but information from smaller rivers in moderately populated catchments is still comparatively scarce. This study explored the microplastic (MP) occurrence in the small regional river Oker, Northern Germany (catchment area 1822 km2, population of ca. 500,000, discharge approx. 12 m3 s−1).

MPs (fibers and fragments in the size range 0.3–5 mm, identification by microscopy) were found in all 10 in-stream samples collected along the course of the river, ranging between 28 and 134 particles m−3 with an overall average of 63 particles m−3. This MP concentration found in the small river Oker is similar to, or higher than, that reported for larger rivers in similar environments in Central Europe. On average, higher MP concentration was found at urban (71 particles m−3) compared to rural sampling sites (51 particles m−3). Within the Oker catchment, in-stream MP concentration showed no or low correlation to the catchment-scale factors of catchment size and population. Additional samples taken from three locations directly influenced by discharges of potential MP point sources confirmed wastewater treatment plants of different capacities and an urban rainwater sewer as sources.

Our results support findings that MP concentrations in small rivers are crucially influenced by local sources, superimposing linear relationships to factors of catchment size and -population. They show that even small rivers draining moderately populated catchments may exhibit comparatively high concentrations of MPs, and thereby represent underestimated pathways of MP in the environment.

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来源期刊
Journal of contaminant hydrology
Journal of contaminant hydrology 环境科学-地球科学综合
CiteScore
6.80
自引率
2.80%
发文量
129
审稿时长
68 days
期刊介绍: The Journal of Contaminant Hydrology is an international journal publishing scientific articles pertaining to the contamination of subsurface water resources. Emphasis is placed on investigations of the physical, chemical, and biological processes influencing the behavior and fate of organic and inorganic contaminants in the unsaturated (vadose) and saturated (groundwater) zones, as well as at groundwater-surface water interfaces. The ecological impacts of contaminants transported both from and to aquifers are of interest. Articles on contamination of surface water only, without a link to groundwater, are out of the scope. Broad latitude is allowed in identifying contaminants of interest, and include legacy and emerging pollutants, nutrients, nanoparticles, pathogenic microorganisms (e.g., bacteria, viruses, protozoa), microplastics, and various constituents associated with energy production (e.g., methane, carbon dioxide, hydrogen sulfide). The journal''s scope embraces a wide range of topics including: experimental investigations of contaminant sorption, diffusion, transformation, volatilization and transport in the surface and subsurface; characterization of soil and aquifer properties only as they influence contaminant behavior; development and testing of mathematical models of contaminant behaviour; innovative techniques for restoration of contaminated sites; development of new tools or techniques for monitoring the extent of soil and groundwater contamination; transformation of contaminants in the hyporheic zone; effects of contaminants traversing the hyporheic zone on surface water and groundwater ecosystems; subsurface carbon sequestration and/or turnover; and migration of fluids associated with energy production into groundwater.
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