Accelerated Photolysis of Pharmaceutical and Personal Care Products at the Air–Water Interface

OH) and their subsequent reactions. Therefore, the photolysis products of PPCPs in microdroplets differed markedly from those in bulk water, with significantly higher levels of hydroxylated transformation products detected in microdroplets. These findings unveil a previously unrecognized yet rapid pathway for the photolysis of PPCPs at the air-water interface, offering novel insights into their natural attenuation and detoxification processes.