Title

Intertidal mangrove mudflat 240+239Pu signatures, confirming a 210Pb geochronology on the southeastern coast of Brazil

Document Type

Article

Publication details

Sanders, CJ, Smoak, JM, Sanders, LM, Waters, MN, Patchineelam, SR & Ketterer, ME 2010, 'Intertidal mangrove mudflat 240+239Pu signatures, confirming a 210Pb geochronology on the southeastern coast of Brazil', Journal of Radioanalytical and Nuclear Chemistry, vol. 283, no. 3, pp. 593-596.

Published version available from:

http://dx.doi.org/10.1007/s10967-009-0418-7

Peer Reviewed

Peer-Reviewed

Abstract

A sediment core was taken to determine if sediment accumulation rates could be conducted using 240+239Pu signatures in the coastal mangrove mudflats of southeastern Brazil. The results from this study show that 240+239Pu fallout activities are sufficient and well preserved in the coastal sediments of this region. Sediment accumulation rates determined from the 240+239Pu signatures were 4.4 mm/year and 4.1 from 210Pb (CIC) method. A sediment mixing coefficient rate was calculated using chlorophyll-a profile (9.5 cm2).