Features of the highway road network that generate or retain tyre wear particles
Features of the highway road network that generate or retain tyre wear particles
复制标题
产生或滞留轮胎磨损颗粒的高速公路路网特征
DOI：
10.1007/s11356-024-32769-1
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发表时间：
2024
影响因子：
5.8
通讯作者：
Parker-Jurd F
中科院分区：
文献类型：
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作者：
Parker-Jurd F
微塑料的环境积累构成了一个巨大的全球挑战，轮胎磨损颗粒（TWP）成为这种颗粒污染的主要和潜在有害的贡献者。TWP进入水生环境的一个关键途径是通过道路排水。虽然排水资产在全球范围内得到应用，但其在保留高度可变密度（TWP ~ 1-2.5 g cm 3）的微塑料方面的有效性仍然未知。本研究探讨他们的能力，以阻止TWP从英国的战略道路网络（SRN）的水生生态系统的转移。从三个蓄水池和三个湿地的进水、出水和沉积物中采集样品。已知TWP产生的速率响应于车辆速度和方向而变化。为了确定这种变化的意义，我们进一步比较了质量的TWP排水从弯曲和直段的SRN横跨八个排水口。热解气相色谱-质谱法（Py-GC-MS）用于量化轮胎磨损，使用苯并噻唑作为TWP的分子标记物（内标为苯并噻唑-D4）。SRN的排水中存在轮胎磨损，浓度为2.86 ± 6 mg/L，并且在分析的每个样品中均发现了轮胎磨损。SRN弯曲部分的引流液中TWP质量平均比直段高40%，但这并不显著。湿地和蓄水池的存在通常导致TWP质量减少（74.9% ± 8.2）。这种影响是显着的保留池塘，但不是湿地，最有可能是由于网站和采样场合之间的变化。类似的排水资产在全球范围内使用，因此，我们的研究结果具有广泛的相关性TWP污染的管理。
The environmental accumulation of microplastics poses a formidable global challenge, with tyre wear particles (TWPs) emerging as major and potentially harmful contributors to this particulate pollution. A critical pathway for TWPs to aquatic environments is via road drainage. While drainage assets are employed worldwide, their effectiveness in retaining microplastics of highly variable densities (TWP ~ 1–2.5 g cm3) remains unknown. This study examines their ability to impede the transfer of TWPs from the UK Strategic Road Network (SRN) to aquatic ecosystems. Samples were collected from the influent, effluent and sediments of three retention ponds and three wetlands. The rate of TWP generation is known to vary in response to vehicle speed and direction. To ascertain the significance of this variability, we further compared the mass of TWPs in drainage from curved and straight sections of the SRN across eight drainage outfalls. Pyrolysis gas chromatography-mass spectrometry (Py-GC–MS) was used to quantify tyre wear using benzothiazole as a molecular marker for TWPs (with an internal standard benzothiazole-D4). Tyre wear was present in drainage from the SRN at concentrations of 2.86 ± 6 mg/L and was found within every sample analysed. Drainage from curved sections of the SRN contained on average a 40% greater TWP mass than straight sections but this was not significant. The presence of wetlands and retention ponds generally led to a reduction in TWP mass (74.9% ± 8.2). This effect was significant for retention ponds but not for wetlands; most probably due to variability among sites and sampling occasions. Similar drainage assets are used on a global scale; hence our results are of broad relevance to the management of TWP pollution.