Characterization of secondary organic aerosol (SOA) formation and toxicity from α-pinene photo-oxidation under effects of nitrogen oxides (NOx) and ammonia (NH3) - Ka Hei Lui; Tianhang Zhang; Fanglin Wang; Yik-Sze Lau; Steven Sai Hang Ho; Hsiao-Chi Chuang; Gehui Wang; Kin Fai Ho (Air Quality, Atmosphere & Health, 2026)