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 Xing2, Luni Sun1, Alexandra Yard3, Patrick Hatcher4, Maureen H Conte5 and Peter H Santschi6, (1)Texas A&M University at Galveston, Department of Marine Sciences, Galveston, TX, United States, (2)Texas A&M University at Galveston, Marine Science, Galveston, TX, United States, (3)Texas A&M University at Galveston, Marine Biology, Galveston, TX, United States, (4)Old Dominion University, Chemistry and Biochemistry, Norfolk, VA, United States, (5)Bermuda Institute of Ocean Sciences, St.George's, GE, Bermuda, (6)Texas A & M University, College Station, TX, United States