Aniline antioxidants in road dust, parking lot dust, and green-belt soil in Harbin, a megacity in China: Occurrence, profile, and seasonal variation.

Journal of hazardous materials Pub Date : 2024-05-05 Epub Date: 2024-03-11 DOI:10.1016/j.jhazmat.2024.134001
Ye Zhang, Jin-Nong Li, Jian-Xin Wang, Jie Hu, Jia-Lin Sun, Yi-Fan Li, Wen-Long Li, Zhong-Hua Tang, Zi-Feng Zhang
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Abstract

Aniline antioxidants (ANs) are widely used as industrial chemicals in products composed of rubber. ANs originate mainly from vehicles, where tire wear particles end up in dust and soil after being deposited on roads. Nowadays, limited information is available on the fate and seasonal variation of ANs in the road environment. In this study, we investigated the occurrence of 32 ANs in dust and soil from different road environments, including road dust, garage dust, parking lot dust, and green-belt soil. The total concentrations of ANs were 369 ng g-1 in road dust, 712 ng g-1 in garage dust, and 687 ng g-1 in parking lot dust. These concentrations are several times higher than that in green-belt soil (128 ng g-1). The highest concentrations of N-(1,3-dimethylbutyl)-N'-phenyl-1,4-phenylenediamine (6PPD) were found in dust and soil. Furthermore, notable seasonal differences were observed, with significantly higher concentrations of ANs in autumn than those in spring. In the main urban area, roads with high traffic volume exhibited higher concentrations of ANs than those with low traffic volume, indicating that ANs were produced by vehicle-related sources.

中国特大城市哈尔滨道路尘埃、停车场尘埃和绿化带土壤中的苯胺抗氧化剂:存在、概况和季节变化。
苯胺防老剂(ANs)作为工业化学品被广泛应用于橡胶制品中。苯胺主要来源于车辆,轮胎磨损颗粒沉积在道路上后最终会进入灰尘和土壤中。目前,有关道路环境中 ANs 的归宿和季节性变化的信息非常有限。在这项研究中,我们调查了不同道路环境(包括道路尘土、车库尘土、停车场尘土和绿化带土壤)的尘土和土壤中 32 种 ANs 的存在情况。道路扬尘中 ANs 的总浓度为 369 ng g-1,车库扬尘中为 712 ng g-1,停车场扬尘中为 687 ng g-1。这些浓度比绿化带土壤中的浓度(128 ng g-1)高出数倍。灰尘和土壤中的 N-(1,3-二甲基丁基)-N'-苯基-1,4-苯二胺(6PPD)浓度最高。此外,还观察到明显的季节性差异,秋季的 ANs 浓度明显高于春季。在主城区,交通流量大的道路比交通流量小的道路显示出更高的苯并芘浓度,这表明苯并芘是由与车辆有关的来源产生的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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