Health Risks and Source Analysis of Heavy Metal Pollution from Dust in Tianshui, China

The purpose of this study is to explore the degree and spatial distribution dust heavy metal pollution in Tianshui City, health risks, sources metals. geoaccumulation index risk assessment are used levels human Cu, Zn, Pb found be serious. total exposure children metals 8.329 × 10?3 mg·kg?1·d?1, which 4.66 times that adults. effect carcinogenic more significant for adults than children. non-carcinogenic quotient via multiple pathways 2.1690, higher Children’s 4.79 adults, sensitive risks pollution. GeoDetector Unmix 6.0 models source analysis, revealing Pb, As originate primarily from urban transportation systems, V sourced soil-forming parent materials, Mn, Ni, Co arise mixed sources. Therefore, treatment cities needs focus on system.