Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, 20 Cornwall Street, Woolloongabba, 4102, QLD, Australia.
Water Quality and Investigation, Water Ecosystem Sciences, Science Division, Department of Environment and Science, Queensland Government, Dutton Park, QLD 4102, Australia.
Sci Total Environ. 2022 Dec 15;852:158468. doi: 10.1016/j.scitotenv.2022.158468. Epub 2022 Sep 6.
Plastics pollution is a global issue impacting every part of our environment. Tyre road wear particle (TRWP) plastics pollution is thought to be one of the largest pollution sources in urban environments. These plastics are also of concern due to the presence of additive chemicals, incorporated during manufacture, that can be released into the surrounding environment. This study aimed to provide information on concentrations of a range of anthropogenic plastics related pollutants in the Australian environment through a scoping study of surface water in 5 key urban centres around Queensland, Australia. Samples were analysed for a suite of 15 common tyre additive chemicals, TRWPs and 6 common high production polymers, and included the new transformation product of concern 6PPD-quinone which has recent reports of causing mass mortality events in certain aquatic species. The additives were ubiquitously detected (2.9-1440 ng/L) with 6PPD-quinone concentrations lower than in previous studies (<0.05-24 ng/L) and TRWPs detected at 18 of the 21 sites (<MDL to between 690 and 1990 μg/L). Of the high production polymers, polyethylene and polypropylene were detected at the highest concentrations (16-1750 and <0.7-37 μg/L respectively) with profiles highly variable between sites. A traffic related additive profile was determined at 7 sites, which all had nearby traffic related sources. Concentrations of additive chemicals were significantly correlated with average daily traffic volumes (p = 0.006), although concentrations of TRWPs were not correlated. Generally, concentrations were in line with or lower than concentrations in other geographical regions, although it is noted samples were collected during the dry season and further sampling during the tropical wet season would be of interest.
塑料污染是一个全球性问题，影响着我们环境的各个方面。轮胎道路磨损颗粒（TRWP）塑料污染被认为是城市环境中最大的污染源之一。这些塑料也引起了人们的关注，因为在制造过程中加入了添加剂化学物质，这些化学物质可能会释放到周围环境中。本研究旨在通过对澳大利亚昆士兰州 5 个主要城市中心的地表水进行范围界定研究，提供有关澳大利亚环境中一系列人为塑料相关污染物浓度的信息。对 15 种常见轮胎添加剂化学物质、TRWPs 和 6 种常见高产量聚合物进行了分析，其中包括最近有报道称会导致某些水生物种大量死亡的新型关注转化产物 6PPD-醌。这些添加剂普遍存在（2.9-1440ng/L），6PPD-醌的浓度低于以前的研究（<0.05-24ng/L），在 21 个地点中的 18 个地点检测到 TRWPs（<MDL 至 690 至 1990μg/L 之间）。在高产量聚合物中，聚乙烯和聚丙烯的浓度最高（分别为 16-1750ng/L 和<0.7-37ng/L），且各地点的分布高度不同。在 7 个地点确定了与交通相关的添加剂分布，这些地点都有附近的与交通相关的污染源。添加剂化学物质的浓度与平均日交通量呈显著相关（p=0.006），尽管 TRWPs 的浓度没有相关性。一般来说，浓度与其他地理区域的浓度相当或更低，尽管需要注意的是，样本是在旱季采集的，在热带雨季进一步采样将很有趣。
