Pollution characteristics, sources and health risk of potentially toxic elements in urban road dust from different functional areas in Hefei, China - Jinhua Wang; Jing Liang; Manli Zhu; Jincheng Ni; Yu Liang; Jian Huang; Tao Luo; Bingbing Zhao; Shanshan Xi; Kun Wang; Liangchen Xu (Environmental Geochemistry and Health, 2026)