Atmospheric aging enhances PAH-associated carcinogenic potency in the ultrafine size range of biomass-burning organic aerosol via oxygenated PAH formation - Yu Peng; Hongxing Jiang; Yingjun Chen; Yong Han; Xinxin Feng; Junjie Cai; Yishun Zhang; Zeyu Liu; Feiyan Cao; Tian Chen (Journal of Hazardous Materials, 2026)