Author: J. Merešová, K. Holý, I. Sýkora, M. Chudý
Title: THE COMPARISON OF RADIONUCLIDES 222Rn AND 210Pb CONCENTRATIONS IN THE
ATMOSPHERE OF BRATISLAVA
Type: conference
Date: 2004-11
Language: en
Comment:
Abstract:
The dominant part of the atmospheric radioactivity consists on 222Rn
and its progeny. 222Rn is the most important radioactive gas present in
the lower atmosphere. Its importance rests on radiohygienic point of
view, because 222Rn and its products are the second most relevant cause
of cancer diseases of respiration tract and lungs after smoking. 222Rn
originates from the decay chain of 238U and enters into lower
atmosphere by emanating and exhaling from soil. Air activity
concentration of 222Rn shows seasonal variations with maximum values in
winter and minimum in summer. It also shows diurnal variations with the
maximum in the night hours and the minimum in the afternoon [1, 2].
The last one of four short-living radon progeny 214Po decays into
210Pb. It is transported through the atmosphere bound to aerosol
particles and precipitated back to Earth by dry or wet deposition. The
value of volume activity of 210Pb is influenced by several
meteorological factors. There are also other possible sources of 210Pb
like traffic or industrial activity.
The aim of this paper is to show the results of the in the long-term
measurement of radioactivity concentration in low level atmosphere [3,
4, 5]. In particular it is concerned with 222Rn and 210Pb, compared
with basic meteorological parameters
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