Degradation pathways of penthiopyrad by δ-MnO mediated processes: a combined density functional theory and experimental study.

Penthiopyrad is a widely used succinate dehydrogenase inhibitor (SDHI) fungicide and frequently detected in natural environments. In order to better understand its fate in natural systems, the degradation of penthiopyrad by manganese dioxide (MnO) was investigated in this study. The results show that penthiopyrad is rapidly degraded in the δ-MnO system.