Abstract
Radon-222 is a good natural tracer of groundwater flow into the coastalocean. Unfortunately, its usefulness is limited by the time consuming natureof collecting individual samples and traditional analysis schemes. We demonstratehere an automated system which can determine, on a “continuous”basis, the radon activity in coastal ocean waters. The system analyses 222Rn from a constant stream of water passing through an air-water exchangerthat distributes radon from the running flow of water to a closed air loop.The air stream is feed to a commercial radon-in-air monitor which determinesthe concentration of 222Rn by collection and measurement of theemitting daughters, 214Po and 218Po, via a charged semiconductordetector. Since the distribution of radon at equilibrium between the air andwater phases is governed by a well-known temperature dependence, the radonconcentration in the water is easily calculated.
Similar content being viewed by others
References
J. M. Edmond, C. Measures, R. E. Mcduff, L. H. Chan, R. Collier, B. Grant, L. I. Gordon, J. B. Corliss, Earth Planet. Sci. Lett., 46 (1979) 1.
K. L. Von Damm, Annu. Rev. Earth Planet. Sci., 18 (1990) 173.
K. L. Von Damm, J. M. Edmond, B. Grant, C. I. Measures, B. Walden, R. F. Weiss, Geochim. Cosmochim. Acta, 49 (1985) 2197.
W. C. Burnett, J. E. Cable, D. R. Corbett, J. Chanton, 1996. Proc. Intern. Symp. on Groundwater Discharges to the Coastal Zone, R. Buddemeier (Ed.), LOICZ/R&S/96–8, LOICZ, Texel, The Netherlands, iv+179 p.
J. E. Cable, G. Bugna, W. C. Burnett, J. Chanton, Limnol. Oceanog., 41 (1996) 1347.
D. R. Corbett, J. Chanton, W. Burnett, K. Dillon, C. Rutkowski, J. Fourqurean, Limnol. Oceanogr., 44 (1999) 1045.
J. E. Cable, W. C. Burnett, J. P. Chanton, G. Weatherly, Earth Planet. Sci. Lett., 144 (1996) 591.
N. Hussain, T. M. Church, G. Kim, Mar. Chem., 65 (1999) 127.
D. R. Corbett, K. Dillon, W. Burnett, J. Chanton, Limnol. Oceanogr., (2000) submitted.
K. A. Fanning, R. H. Byrne, J. A. Breland II, P. R. Betzer, W. S. Moore, R. J. Elsinger, T. E. Pyle, Earth Planet. Sci. Lett., 52 (1981) 345.
W. S. Broecker, J. Cromwell, Y.-H. Li, Earth Planet. Sci. Lett., 5 (1968) 101.
G. G. Mathieu, P. E. Biscaye, R. A. Lupton, D. E. Hammond, Health Phys., 55 (1988) 989.
S. Tasaka, Y. Sasaki, H. Okazawa, M. Nakagawa, Radioisotopes, 43 (1994) 126 (in Japanese).
F. Weigel, Chemiker Zeitung, 102 (1978) 287.
A. J. Howard, W. P. Strange, Nucl. Instr. Meth., A311 (1992) 378.
D. Lane-Smith, S. Shefsky, Proc. American Association of Radon Scientists and Technologists, Las Vegas, Nevada, November 7–10, 1999.
D. R. Lee, Limnol. Oceanogr., 22 (1977) 140.
M. Taniguchi, Y. Fukuo, Ground Water, 31 (1993) 675.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Burnett, W.C., Kim, G. & Lane-Smith, D. A continuous monitor for assessment of 222Rn in the coastal ocean. Journal of Radioanalytical and Nuclear Chemistry 249, 167–172 (2001). https://doi.org/10.1023/A:1013217821419
Published:
Issue Date:
DOI: https://doi.org/10.1023/A:1013217821419