Environmental biomolecular chemistry-Our current water and wastewater treatment facilities are not designed for treating disease-causing biomolecules, such as antibiotic resistance genes. With the increase of sustainable agricultural practices, the persistence of structural integrity and biological functions of these biomolecules in the treated water and biosolids is a huge public health concern. Our group is particularly interested in understanding the sunlight photolysis of antibiotic resistance genes in liquid and at the liquid-solid interface to inform the control of antibiotic resistance. We are charactering and modeling the decay kinetics of antibiotic resistance genes under sunlight through laboratory studies and field work. We are developing molecular assays, mass spectrometry analysis, and microbial transformation assays to fully understand the mechanism of nucleic acids photo-reactions and their impact on the transformability of the antibiotic resistance genes.