Cerium Redox Chemistry in Seawater:  Evaluation as a Tracer of Oxide Mediated Scavenging Processes
{'Code': '06040302', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'OCE', 'LongName': 'Division Of Ocean Sciences'}}
{'SignBlockName': 'Nicholas Anderson', 'PO_EMAI': 'nanderso@nsf.gov', 'PO_PHON': '7032924715'}
Cerium is the only rare earth element which exhibits a redox                    chemistry in the marine water column.  Understanding its                        geochemistry may provide important insights into the role of                    redox processes in minor element transport.  A preliminary                      investigation of Ce redox chemistry indicates that it exhibits a                dynamic redox chemistry, with Ce(III) oxidation on oxide surfaces               and photoreduction of Ce(IV) in surface waters being potentially                important processes in its preferential removal and                             remobilization relative to the trivalent rare earths under                      different conditions.  Furthermore, Ce redox chemistry shows a                  close similarity to that of manganese.                                                                                                                          Dr.Sholkovitz and Moffett propose to carry out a detailed                       laboratory and field investigation of the redox chemistry of Ce                 in seawater, to expand our basic knowledge of its natural water                 chemistry and identify the processes important in its transport.                The data will be used to evaluate the usefulness of Ce anomaly                  data as a tracer of metal oxide mediated transport and a                        geochemical analog of manganese.
[{'FirstName': 'James', 'LastName': 'Moffett', 'PI_MID_INIT': 'W', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'James W Moffett', 'EmailAddress': 'jmoffett@usc.edu', 'NSF_ID': '000441739', 'StartDate': '01/01/1989', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}, {'FirstName': 'Edward', 'LastName': 'Sholkovitz', 'PI_MID_INIT': 'R', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Edward R Sholkovitz', 'EmailAddress': 'esholkovitz@whoi.edu', 'NSF_ID': '000118282', 'StartDate': '01/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}]
{'Name': 'Woods Hole Oceanographic Institution', 'CityName': 'WOODS HOLE', 'ZipCode': '025431535', 'PhoneNumber': '5082893542', 'StreetAddress': '266 WOODS HOLE RD', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '09', 'CONGRESS_DISTRICT_ORG': 'MA09', 'ORG_UEI_NUM': 'GFKFBWG2TV98', 'ORG_LGL_BUS_NAME': 'WOODS HOLE OCEANOGRAPHIC INSTITUTION', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1670', 'Text': 'Chemical Oceanography'}
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