Dataset: Radium
Deployment: TN303

Radium isotopes collected on the GEOTRACES EPZT cruise.
Principal Investigator: 
Matthew A. Charette (Woods Hole Oceanographic Institution, WHOI)
Co-Principal Investigator: 
Willard S Moore (University of South Carolina)
BCO-DMO Data Manager: 
Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)
Current State: 
Final with updates expected
Deployment Synonyms:
 GEOTRACES EPZT,  GEOTRACES East Pacific Zonal Transect (EPZT),  GT13,  325020131025,  GP16
29 June 2016
Version Date: 

Radium and Thorium isotopes were collected on manganese oxide impregnated cartridges using an in situ pump filtering 1500-2000L at depth, while ~1000L surface samples were collected by hanging manganese oxide impregnated acrylic fibers over the side of the ship. Samples were collected for Radium Isotopes ex223Ra (227Ac corrected), ex224Ra (228Th corrected), 226Ra, 228Ra, 228Th (particulate), 228Th (dissolved), and 228Th (total). Only 226Ra and 228Ra are reported in this version of the dataset. Future versions will include the other Ra isotopes and 228Th.

Related files and references:  
Cartridge preparation: 
Henderson, P. B., Morris, P. J., Moore, W. S., and Charette, M. A.: Methodological advances for measuring low-level radium isotopes in seawater, J. Radioanal. Nucl. Chem., 293, 1–6, doi:10.1007/s10967-012-2047-9, 2012.

Particulate and dissolved 228Th determination:
Maiti, K., Charette, M.A., Buesseler, K.O., Zhou, K., Henderson, P., Moore, W.S., Morris, P., Kipp, L., 2015. Determination of particulate and dissolved 228Th in seawater using a delayed coincidence counter. Mar. Chem. doi:10.1016/j.marchem. 2014.12.001

More information about this dataset deployment