Traffic-related microplastic particles, metals, and organic pollutants in an urban area under reconstruction
Traffic-related microplastic particles, metals, and organic pollutants in an urban area under reconstruction
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DOI：
10.1016/j.scitotenv.2021.145503
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发表时间：
2021-02-18
影响因子：
9.8
通讯作者：
Andersson-Skold, Yvonne
中科院分区：
文献类型：
--
作者：
Jarlskog, Ida;Stromvall, Ann-Margret;Andersson-Skold, Yvonne
在城市环境中，特别是正在重建的地区，由于交通繁忙，金属、有机污染物(OP)和微塑料(MP)被大量释放。道路径流是城市污染物的主要运输途径，是造成受纳水域水质恶化的重要原因。这项研究是在瑞典哥德堡进行的，它的独特之处在于它同时调查了道路和重建中城市地区的雨水中OP、金属和MP的出现情况。还探讨了各种污染物之间的相互关系。这项研究是通过多次收集街道清扫、路面采样和流量比例雨水采样产生的洗涤水和扫沙砂进行的。对液体和固体样品进行了金属、多环芳烃(PAH)、氧基多环芳烃、脂肪族、芳烃、邻苯二甲酸酯和MP的分析。选择样本进行非靶点筛查，分析OP的发生情况。采用碘化钠密度分离、立体显微镜鉴定、熔融试验和触觉鉴定相结合的方法，对塑料碎片/纤维、油漆碎片、轮胎磨损颗粒(TWP)和沥青等微塑料进行了分析。雨水中MP浓度为1500粒/L，洗涤水中MP浓度为51,000粒/L，扫沙中MP浓度为2.6×10(6)粒子/千克干重。在暴雨、洗涤水和扫沙中，MP>；=20亩以TWP为主(分别占38%、83%和78%)。结果证实，交通是MP、OP和金属排放的重要来源。大多数样品中的金属(如铜和锌)、多环芳烃、邻苯二甲酸盐和C-16-C-35馏分中的脂肪烃的浓度超过了水和沉积物质量标准。结果表明，清道夫收集了大量的污染物质，从而防止了污染物进一步扩散到接收雨水。(C)2021年提交人。Elsevier B.V.出版。这是一篇基于CC by License(http://creativecommons.org/licenses/by/4.0/).的开放获取文章
In urban environments, particularly areas under reconstruction, metals, organic pollutants (OP), and microplastics (MP), are released in large amounts due to heavy traffic. Road runoff, a major transport route for urban pollutants, contributes significantly to a deteriorated water quality in receiving waters. This study was conducted in Gothenburg, Sweden, and is unique because it simultaneously investigates the occurrence of OP, metals, and MP on roads and in stormwater from an urban area under reconstruction. Correlations between the various pollutants were also explored. The study was carried out by collecting washwater and sweepsand generated from street sweeping, road surface sampling, and flow-proportional stormwater sampling on several occasions. The liquid and solid samples were analyzed for metals, polycyclic aromatic hydrocarbons (PAH), oxy-PAH, aliphatics, aromatics, phthalates, and MP. The occurrence of OP was also analyzed with a non-target screening method of selected samples. Microplastics, i.e. plastic fragments/fibers, paint fragments, tire wear particles (TWP) and bitumen, were analyzed with a method based on density separation with sodium iodide and identification with a stereo microscope, melt-tests, and tactile identification. MP concentrations amounted to 1500 par-ticles/L in stormwater, 51,000 particles/L in washwater, and 2.6 x 10(6) particles/kg dw in sweepsand. In stormwater, washwater and sweepsand, MP >= 20 mu m were found to be dominated by TWP (38%, 83% and 78%, respectively). The results confirm traffic as an important source to MP, OP, and metal emissions. Concentrations exceeding water and sediment quality guidelines for metals (e.g. Cu and Zn), PAH, phthalates, and aliphatic hydrocarbons in the C-16-C-35 fraction were found in most samples. The results show that the street sweeper collects large amounts of polluted materials and thereby prevents further spread of the pollutants to the receiving stormwater. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).