batch_auto_20260713 202607131256465730 BOEM ESP geoESPIS ESPIS@boem.gov Bureau of Ocean Energy Management Hydrocarbon oxidation products in Cook Inlet: formation and bioaccumulation in mussels University of Alaska Anchorage University of Alaska Anchorage The availability of new leases for petroleum production increases the risk of spills in high-latitude environments. Hydrocarbon oxidation products (HOPs), classified within operationally defined dissolved organic matter, are of emerging concern because they can be transported rapidly from the petroleum body, undetectable by conventional gas chromatography-based methods, and information about their toxicity to aquatic organisms is limited. There are few reports on the pathways and chemical composition of HOPs formed by photochemical dissolution in high-latitude environments. Here we report quantitative and qualitative information about photochemically produced HOPs under simulated Cook Inlet (CI) and bioaccumulation potential. 350000 U.S. Department of the Interior, Bureau of Ocean Energy Management, Environmental Studies Program https://doi.org/10.13039/100012475 M20AC10012 10.67297/9A1E5E https://boem.gov/awardpages/100318