Macro-Provenance and environmental Drivers of roadside potentially toxic elements via Multi-Source proxies

IF 7.7 1区工程技术 Q1 ENVIRONMENTAL STUDIES

Transportation Research Part D-transport and Environment Pub Date : 2025-09-24 DOI:10.1016/j.trd.2025.105010

Zhiqiang Yang , Qiulin Xiong , Xingchuan Yang , Wenkai Lei , Chen Su , Wencan Meng , Jiale Xu , Wenji Zhao

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引用次数: 0

Abstract

Potentially toxic element (PTE) contamination in roadside soils is a critical environmental issue. This study analyzed the distribution, pollution characteristics, and sources of 12 PTEs along national highways in the North China Plain. By integrating multi-source proxies (e.g., cropland use intensity, industrial emissions, PM₁₀, rainfall, and soil properties) with pollution assessment and PMF receptor models, key findings include: (1) Limited contribution from general traffic; (2) Highest ecological risk for Cd (CF = 1.75), with Cd, Zn, Sb, and Pb enriched from mixed traffic-agricultural sources (50.8 %–88.5 %); (3) V, Cr, and other elements clustered near vehicle stop-start zones; (4) High rainfall (>800 mm) and low soil pH (<7.5) in southern Henan promoted accumulation of V, Cr and other elements, while alkaline soil conditions (pH > 8.0) and lower rainfall (<600 mm) enhanced Ni, Mn, and Cu enrichment. Spatial proxies enabled refined source analysis, suggesting prioritized control of stop-start zones for targeted management.

查看原文本刊更多论文

基于多源代理的路边潜在有毒元素的宏观来源和环境驱动因素

路边土壤中的潜在有毒元素（PTE）污染是一个严重的环境问题。本研究分析了华北平原国道沿线12个pte的分布、污染特征及来源。通过将多源代理（如农田利用强度、工业排放、PM10、降雨和土壤性质）与污染评估和PMF受体模型相结合，主要发现包括：(1)一般交通的贡献有限；(2) Cd生态风险最高（CF = 1.75），交通-农业混合源富集Cd、Zn、Sb和Pb的生态风险最高（50.8% ~ 88.5%）；(3) V、Cr等元素聚集在车辆启停区域附近；(4)豫南地区高降雨量（800mm）和低土壤pH（7.5）促进了V、Cr等元素的富集，碱性土壤（8.0）和低降雨量（600mm）促进了Ni、Mn和Cu的富集。空间代理支持精确的源分析，建议优先控制启停区域，以进行有针对性的管理。

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来源期刊

Transportation Research Part D-transport and Environment 工程技术-运输科技

CiteScore

14.40

自引率

9.20%

发文量

314

审稿时长

39 days

期刊介绍： Transportation Research Part D: Transport and Environment focuses on original research exploring the environmental impacts of transportation, policy responses to these impacts, and their implications for transportation system design, planning, and management. The journal comprehensively covers the interaction between transportation and the environment, ranging from local effects on specific geographical areas to global implications such as natural resource depletion and atmospheric pollution. We welcome research papers across all transportation modes, including maritime, air, and land transportation, assessing their environmental impacts broadly. Papers addressing both mobile aspects and transportation infrastructure are considered. The journal prioritizes empirical findings and policy responses of regulatory, planning, technical, or fiscal nature. Articles are policy-driven, accessible, and applicable to readers from diverse disciplines, emphasizing relevance and practicality. We encourage interdisciplinary submissions and welcome contributions from economically developing and advanced countries alike, reflecting our international orientation.