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生态学杂志 ›› 2025, Vol. 44 ›› Issue (10): 3274-3284.doi: 10.13292/j.1000-4890.202510.035

• 城市生态学 • 上一篇    下一篇

北京市校园道路粉尘中重金属元素的污染特征、来源及健康风险

李俊1,2,胡健1,2*,王鹏3,马文敏3,郑厚义4,吴再璐5   

  1. 1中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085; 2中国科学院大学, 北京 100049; 3中国地质大学(北京)科学研究院, 北京 100083; 4中化地质矿山总局, 北京 100013; 5黔南州生态环境污染防治技术中心, 贵州 550002)

  • 出版日期:2025-10-10 发布日期:2025-10-10

Pollution characteristics, sources and health risks of heavy metallic elements in campus road dust in Beijing, China.

LI Jun1,2, HU Jian1,2*, WANG Peng3, MA Wenmin3, ZHENG Houyi4, WU Zailu5   

  1. (1State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; 2University of Chinese Academy of Sciences, Beijing 100049, China; 3Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, China; 4China Chemical Geology and Mine Bureau, Beijing 100013, China; 5Qiannan Prefecture Ecology and Ecological Environment Pollution Prevention and Control Technology Center, Guizhou 550002, China).

  • Online:2025-10-10 Published:2025-10-10

摘要: 城市道路粉尘由于具有环境和健康风险而受到广泛关注。本研究在北京市幼儿园、小学以及高等院校共采集了38个校园道路粉尘样品,测定了其中Cd、Co、Cr、Cu、Ni、Pb、Ti、V、Zn的含量,分析了其污染特征、来源及健康风险。结果表明,校园道路粉尘中重金属呈现重度污染。其中,Cd的污染程度最高,其余依次为Zn、Cu、Pb、Co、Cr、Ni、V和Ti。校园道路粉尘中重金属的来源主要包括工业源(33.33%)、交通源(45.93%)和自然源(20.74%)。采用蒙特卡洛模拟,结合美国环保署的健康风险模型进行了健康风险的不确定性评估,结果表明,道路粉尘中重金属具有显著的致癌风险,且儿童的健康风险均高于成人。Cd是校园道路粉尘中的优控污染物,交通源是优先控制的风险源。


关键词: 校园, 道路粉尘, 污染特征, 来源解析, 健康风险

Abstract: Urban road dust has received widespread attention due to its environmental and health risks. In this study, a total of 38 campus road dust samples were collected from kindergartens, elementary schools, and colleges in Beijing. By measuring the contents of Cd, Co, Cr, Cu, Ni, Pb, Ti, V, and Zn, we analyzed the contamination characteristics, sources, and health risks. The results showed that heavy metals in Beijing campus road dust displayed heavy pollution. Among them, Cd showed the highest level of pollution, followed by Zn, Cu, Pb, Co, Cr, Ni, V and Ti. The sources of heavy metals in campus road dust mainly included industrial sources (33.33%), traffic sources (45.93%), and natural sources (20.74%). Uncertainty assessment of health risk was carried out using Monte Carlo simulation in conjunction with the health risk model of the U.S. Environmental Protection Agency. The results showed that heavy metals in road dust had significant carcinogenic risk, and that the health risk of children was higher than that of adults in all cases. Cd was the preferred pollutant to be controlled in campus road dust. Traffic sources were the preferred source of risk to be controlled.

Key words: campus, road dust, pollution characterization, source analysis, health risk