Six-year trends of concentration, chemical composition, sources and health risks of halogenated, nitro and oxygenated PAHs in winter PM2.5 at a rural area in northern China (2019–2024) - Yifan Li; Feijie Gong; Anan Qi; Qi Huang; Zhentong Sun; Lingxiao Yang; Wenxing Wang (Environmental Pollution, 2025)