The Hexi Corridor is the main commodity grain base in northwest China and plays a special role in ensuring food security in northwest China. However, the multiple pollution transport pathways of PAHs and complex and co-existing potential pollution sources around the study areas require a combination of pollution status, source identification, and risk assessment to explore pollution distribution and potential risks. In this study, the total PAHs concentration (∑₁₈PAHs) in soils ranged from 69.6 to 1300 ng/g. Spatially, the higher content of PAHs was detected in the Jinchang, followed by Jiayuguan, Jiuquan, Wuwei, and Zhangye, indicating a remarkable influence of different industrial activities. Although high-molecular-weight PAHs were predominated, the compositions of PAHs in most of the soil samples were varied. The isomer ratios of PAHs and principal component analysis were also revealed the PAHs probably originate from the sources different significantly. The total health risk values indicated a low health risk.

河西走廊是西北地区主要商品粮基地，在保障西北地区粮食安全方面发挥着特殊作用。然而，研究区周围多环芳烃的多种污染迁移路径和复杂共存的潜在污染源需要结合污染状况、源识别和风险评估来探索污染分布和潜在风险。在本研究中，总 PAHs 浓度 (∑ ₁₈土壤中的 PAHs) 范围为 69.6 至 1300 ng/g。从空间上看，金昌地区PAHs含量较高，其次是嘉峪关、酒泉、武威和张掖，表明不同工业活动的影响显着。尽管高分子量 PAHs 占主导地位，但大多数土壤样品中 PAHs 的组成各不相同。多环芳烃的异构体比例和主成分分析也表明多环芳烃的来源可能有显着差异。总健康风险值表明健康风险较低。