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ISO 11665-2 1st Edition, July 15, 2012 Measurement of radioactivity in the environment - Air: radon-222 - Part 2: Integrated measurement method for determining average potential alpha energy concentration of its short-lived decay products
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 11665 describes integrated measurement methods
for short-lived radon-222 decay products[4]. It gives
indications for measuring the average potential alpha energy
concentration of short-lived radon-222 decay products in the air
and the conditions of use for the measuring devices.
This part of ISO 11665 covers samples taken over periods varying
from a few weeks to one year. This part of ISO 11665 is not
applicable to systems with a maximum sampling duration of less than
one week.
The measurement method described is applicable to air samples
with potential alpha energy concentration of short-lived radon-222
decay products greater than 10 nJ/m3 and lower than 1
000 nJ/m3.
NOTE For informative purposes only, this document also addresses
the case of radon-220 decay products, given the similarity in
behaviour of the radon isotopes 222 and 220.