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6PPD-Q在中国的时空分布由国家规模的量化框架揭示

Fangping Xu¹, Meirong Su¹, Shaoyu Tang²

¹Guangdong Basic Research Center of Excellence for Ecological Security and Green Development, Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China.

Environmental science & technology

|December 3, 2025

概括

6PPD- (6PPD-Q) 污染正在增加,原因是中国的车辆扩张. 儿童面临更高的暴露风险,主要是通过土壤摄入,强调需要更广泛的环境监测.

科学领域:

环境科学环境科学
环境化学环境化学
毒理学毒理学毒理学

背景情况:

6PPD- (6PPD-Q) 是轮胎抗氧化剂6PPD的衍生物,是一种广泛存在的污染物,具有生态毒理和健康问题.
大规模的时空发射动态,环境命运和人类对6PPD-Q的暴露水平尚不清楚.

研究的目的:

建立一个全国性的定量框架,以评估6PPD-Q中国的污染动态和人类暴露风险.
界定6PPD-Q污染的时空模式,并确定高风险地区和人群.

主要方法:

集成的高分辨率排放清单,多媒体环境命运建模和多路径人类暴露分析.
从2013年到2023年分析了国家6PPD-Q排放量.
评估了不同年龄组的人类暴露途径和估计的每日摄入量.

主要成果:

国家6PPD-Q排放量在2013年至2023年期间大约升了97.5%,主要是由于车辆的增长.
高速公路交通和土壤水库是重要的排放来源,这表明需要在城市水体之外进行监测.
污染热点集中在人口密集和地形限制地区.
儿童的估计每日6PPD-Q摄入量高于成年人,主要暴露途径是食用土壤.

结论:

开发的框架有效量化了6PPD-Q污染和相关风险.
这些发现支持针对6PPD-Q的有针对性的风险评估和监管干预措施.
扩大监测策略对于管理这种无处不在的环境污染物至关重要.

关键词:

6PPD-QQ 是一个排放估计估计的排放量.风险曝光评估风险曝光评估多媒体环境建模环境建模轮胎的磨损颗粒是因为轮胎的磨损颗粒.

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