The levels of some potentially toxic metals (Cr, Mn, Fe, Co, Cu, Zn, Cd, and Pb) were quantified in 60 street dust samples from Khamees-Mushait city, Saudi Arabia. Samples were taken from three locations at each functional area (total 18 including traffic, industrial, residential, and workshops) and at each control area (total two including a park and a new domestic planner). Heavy metals concentrations were quantified in less than 106 µm particle-size using inductively-coupled plasma-optical emission spectrometer after microwave wet digestion. The total concentrations (µg/g) were in the ranges of Cr 128.48–277.53, Mn 589.43–1091.45, Fe 43478.26–99151.63, Co 23.04–55.22, Cu 10.46–176.13, Cd 0.30–1.99, and Pb 9.36–340.56. The accuracy of results was examined using standard quality control samples, spiking, and a certified reference material. The overall recovery was in the range of 86.2–113.3%. The enrichment factors and the geoaccumulation indices, besides principal component analysis, reveal various levels of enrichment by Fe, Cu, Zn, and Pb from functional areas of congested traffic, commercial activities, and metallic workshops activities. In contrast, no significant enrichment by Cr, Mn, and Co was recorded. The cluster analysis revealed that the metallic workshops and the vehicle scrap workshops are the hottest functional areas.

在来自沙特阿拉伯Khamees-Mushait市的60个街道灰尘样品中，对一些潜在有毒金属（Cr，Mn，Fe，Co，Cu，Zn，Cd和Pb）的含量进行了定量。从每个功能区域的三个地点（总共18个地点，包括交通，工业，住宅和车间）和每个控制区域（总共两个地点，包括一个公园和一个新的家庭计划员）采集了样本。微波湿消解后，使用电感耦合等离子体发射光谱仪将重金属浓度量化为小于106 µm的粒径。总浓度（μg/ g）介于Cr 128.48–277.53，Mn 589.43–1091.45，Fe 43478.26–99151.63，Co 23.04–55.22，Cu 10.46–176.13，Cd 0.30–1.99和Pb 9.36–340.56。使用标准质量控制样品，加标针和经过认证的参考材料检查了结果的准确性。总体恢复率在86.2-113.3％的范围内。除了主要成分分析外，富集因子和地积累指标还显示出铁，铜，锌和铅在交通拥挤，商业活动和金属车间活动等功能区域中的各种富集水平。相反，没有记录到Cr，Mn和Co的显着富集。聚类分析表明，金属车间和车辆报废车间是最热门的功能区域。并记录了Co。聚类分析表明，金属车间和车辆报废车间是最热门的功能区域。并记录了Co。聚类分析表明，金属车间和车辆报废车间是最热门的功能区域。