Pre-concentration of short-lived radionuclides using manganese dioxide precipitation from surface waters


Burnett, J.L., Croudace, I.W. and Warwick, P.E. (2012) Pre-concentration of short-lived radionuclides using manganese dioxide precipitation from surface waters. Journal of Radioanalytical and Nuclear Chemistry, 292, (1), 25-28. (doi:10.1007/s10967-011-1392-4).

Download

Full text not available from this repository.

Description/Abstract

Rapid determination of 222Rn and 220Rn progeny (214Pb, 212Pb, 214Bi, 212Bi) is achievable using manganese dioxide (MnO2) precipitation with analysis by c-spectrometry. This is of interest to environmental monitoring programmes that utilise gross activity methods to screen for anthropogenic radionuclides. The contribution from these naturally occurring radionuclides (NOR) varies, and is difficult to experimentally measure due to short half-lives (t� = 19.9 m–10.64 h) and low environmental activity (\0.1 Bq L-1). The extraction efficiency of the technique is above 90%, and above 80% for other nuclides (232Th, 238U, 235U, 228Ac, 226Ra, 224Ra, 210Pb, 54Mn). Short-lived NOR have been measured at two surface water locations, and indicates elevated 214Bi activity of 4.0 ± 1.1 Bq L-1.

Item Type: Article
ISSNs: 0236-5731 (print)
1588-2780 (electronic)
Keywords: Radon progeny,� Surface waters, Manganese dioxide
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QD Chemistry
Q Science > QE Geology
Divisions: Faculty of Natural and Environmental Sciences > Ocean and Earth Science > Geochemistry
ePrint ID: 337014
Date Deposited: 13 Apr 2012 14:38
Last Modified: 27 Mar 2014 20:20
URI: http://eprints.soton.ac.uk/id/eprint/337014

Actions (login required)

View Item View Item