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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:   (10356 Views)

ABSTRACT

Background:

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

220

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

Results:

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

of

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 .

Conclusion:

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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