Hydroxamate siderophores moieties responsible for scavenging Fe and particle-reactive radionuclides (Th, Pa and Po) are present in marine sinking particles as detected by ESI-FTICRMS

Chen Xu1, Peng Lin1, Kathleen Schwehr1, Wei Xing1, Luni Sun1, Alexandra Yard2, Patrick G Hatcher3, Maureen H Conte4 and Peter H Santschi5, (1)Texas A&M University at Galveston, Department of Marine Sciences, Galveston, TX, United States, (2)Texas A&M University at Galveston, Marine Biology, Galveston, TX, United States, (3)Old Dominion University, Chemistry and Biochemistry, Norfolk, VA, United States, (4)Bermuda Institute of Ocean Sciences, St.George's, Bermuda, (5)Texas A & M University, College Station, TX, United States