NORCE-Environment, Mekjarvik 12, 4070 Randaberg, Norway.
NORCE-Environment, Mekjarvik 12, 4070 Randaberg, Norway.
J Hazard Mater. 2021 Aug 15;416:125708. doi: 10.1016/j.jhazmat.2021.125708. Epub 2021 Mar 23.
Communities value water and aquatic environments for a many diverse reasons. Ensuring safe drinking water is prioritized on the political agenda with a dedicated focus on safe and affordable drinking water under the 6th of the UN sustainable development goals. The occurrence of micron sized plastic fragments has been confirmed even in very remote areas. In the present study we analysed drinking water of a medium-sized Norwegian urban area for the presence of microplastics ≥ 1 µm. A modular filtering sampling devices was developed allowing a sequential in-situ enzymatic and mild oxidizing driven sample preparation prior to pyrolysis gas chromatography-mass spectrometry sample's analysis (pyr-GCMS). Samples were taken at different stages of the drinking water supply chain. The total amount of polymers per sites ranged from 6.1 to 93.1 µg/m. Higher levels were detected in the raw water, but significant reduction rates ranging from 43% to 100% depending on the polymer type were scored after the water treatment processes. Polyethylene, polyamide, and polyester were the most frequently detected polymer types. Overall, the levels of MPs in the raw water influence the occurrence and polymer type occurrence and distribution is the drinking water supply net. This study contributes to the emerging field of plastics pollution in drinking water supply systems by providing effective methods helping with future routine monitoring of this source of human plastic uptake.
社区出于多种不同的原因重视水和水生环境。确保安全饮用水是政治议程上的优先事项，专门关注联合国可持续发展目标第 6 项下的安全和负担得起的饮用水。即使在非常偏远的地区，也已经确认存在微米级塑料碎片。在本研究中，我们分析了挪威一个中等城市地区的饮用水中是否存在≥1 µm 的微塑料。开发了一种模块化过滤采样装置，允许在热裂解气相色谱-质谱分析 (pyr-GCMS) 之前进行原位酶和温和氧化驱动的样品制备。在饮用水供应链的不同阶段采集了样品。每个地点的聚合物总量范围为 6.1 至 93.1 µg/m。在原水中检测到较高水平，但在水处理过程后，根据聚合物类型，检测到 43%至 100%的显著减少率。聚乙烯、聚酰胺和聚酯是最常检测到的聚合物类型。总的来说，原水中 MPs 的水平会影响饮用水供应网中 MPs 的存在和聚合物类型的出现和分布。本研究通过提供有效的方法，有助于未来对这一人为塑料摄入源进行常规监测，为饮用水供应系统中的塑料污染这一新兴领域做出了贡献。
