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:: Volume 2, Issue 4 (3-2005) ::
Int J Radiat Res 2005, 2(4): 211-213 Back to browse issues page
Gross beta activities and Beryllium-7 concentrations in surface air
F. Arkian, J. Amidi
, arkian 1@yahoo.com
Abstract:   (13788 Views)



were made each week during year 2002 from samples of atmospheric aerosols filtered from the

air at Tehran Nuclear Research Center.

Measurement of gross beta activities and cosmogenic Beryllium-7 concentrations

Materials and Methods

sampler at the Nuclear Research Center meteorological station in Tehran (40

contents of samples were determined with semiconductor gamma spectrometry. The long-lived

beta activity, i.e. total beta activity measured four days after the end of sampling (after decay of

: The aerosol samples were collected weekly with high-volume airo 35. N). The 7Be


The long-lived beta activity consists mainly of

amount of artificial radionuclides in the air is negligible.

Rn progeny and short-lived 220Rn progeny), was assessed with an automatic beta analyzer.210Bi, the daughter nuclide of 210Pb, as the


lognormal distribution during the study period 2002. The arithmetic mean of annual concentrations


The air concentrations of both the 7Be and the long-lived beta activity displayed a7Be and 210 Pb was 6.30 and 0.50 mBqm-3, respectively .


beta activities are partially correlated. Both have maximum concentrations during warm

mid-year months.

Despite the different origins, the concentrations of both the 7Be and the long.livedIran. J. Radiat. Res., 2005 2 (4): 211-213
Keywords: lead-210, gamma spectrometry, gross beta activity, Beryllium-7 concentrations
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Type of Study: Original Research | Subject: Radiation Biology
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F. Arkian, J. Amidi. Gross beta activities and Beryllium-7 concentrations in surface air . Int J Radiat Res. 2005; 2 (4) :211-213
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Volume 2, Issue 4 (3-2005) Back to browse issues page
International Journal of Radiation Research
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