Materano-Escalona Lisbett Susana, Amador-Hernández Judith, Carrillo Diego Martínez, Vázquez-Lule Alma, Velázquez-Manzanares Miguel, Alejandro Alejandra Guadalupe Gutiérrez
Center for Interdisciplinary Studies and Research CEII, Universidad Autónoma de Coahuila, Ciudad Universitaria, Arteaga, Coahuila, México.
Applied Geosciences Research Center CIGA, Universidad Autónoma de Coahuila, Nueva Rosita, Coahuila, CP 26830, México.
Environ Monit Assess. 2025 Jun 26;197(7):809. doi: 10.1007/s10661-025-14200-5.
Road dust refers to solid particles in the air that are airborne. Such particles are generated by mechanical processes, either geological or anthropogenic, from different organic and inorganic materials such as rocks, minerals, and metals. It mainly comprises coarse particles with residues from mining by-products, human waste, and animal or automotive parts. Sediment dust sampling is an important tool for assessing the deposition of environmental contaminants. Collecting it with a shovel and plastic brush over a 1 m area is an inexpensive and effective alternative, allowing representative studies without the need for expensive equipment. The objective of this study is to determine the ecological and human health risks associated with exposure to trace metals in road dust in the urban areas of Nueva Rosita, Coahuila, Mexico. Forty-four samples were collected from an area measuring 8 km. Elemental concentrations were quantified using inductively coupled plasma optical emission spectrometry, and mean concentrations of 882, 369, 48, 53, and 8 (mg/kg) for Zn, Cd, Pb, Cu, and Cr, respectively, were obtained. The ecological risk index indicates a significant risk of Cd contamination and moderate risks of Zn, Pb, and Cu contamination. Notably, average concentrations of these pollutants do not pose a chronic risk to human health. This study represents the basis for monitoring contamination by trace metals such as Zn, Cd, Pb, and Cu.
道路扬尘是指空气中悬浮的固体颗粒。这些颗粒是由地质或人为的机械过程产生的，来自不同的有机和无机材料，如岩石、矿物和金属。它主要由含有采矿副产品、人类排泄物以及动物或汽车部件残余物的粗颗粒组成。沉积物粉尘采样是评估环境污染物沉积的重要工具。用铲子和塑料刷在1平方米的区域内采集是一种廉价且有效的替代方法，无需昂贵设备就能进行具有代表性的研究。本研究的目的是确定墨西哥科阿韦拉州新罗西塔市区道路扬尘中痕量金属暴露所带来的生态和人类健康风险。从一个8公里的区域采集了44个样本。使用电感耦合等离子体发射光谱法对元素浓度进行了定量分析，分别获得了锌、镉、铅、铜和铬的平均浓度为882、369、48、53和8（毫克/千克）。生态风险指数表明镉污染风险显著，锌、铅和铜污染风险为中等。值得注意的是，这些污染物的平均浓度不会对人类健康造成慢性风险。本研究为监测锌、镉、铅和铜等痕量金属的污染情况奠定了基础。
