| Hygiene of populated places | ISSN: 2707-0441 eISSN: 2707-045X |
Issue 67, 2017 - Pages: 146-152
ANALYSIS OF WAYS OF ENTERING RADON IN THE HOMES ON THE EXAMPLE VILLAGE OLSHANYTSIA
M. Fryziuk1, N. Aksenov1
1 STATE INSTITUTION “O.M. MARZIEIEV INSTITUTE FOR PUBLIC HEALTH” NAMSU
ÓÄÊ: 614.876:613.55:546.296
SUMMÀRY:
Objective. We evaluated indoor radon concentration in residential buildings, radon concen-tration in soil gas, and natural radionuclides (NORM) in the soil for the selected of settlement.
Materials and methods. The study included: measurements indoor 222Rn in homes, 222Rn con-centration in soil, NORM concentrations (226Ra, 232Th and 40K) in soil near the selected houses.
The passive track method were using for indoor radon-222 measurements with using nitrate-cellulose film LR-115 as a detector.
Radon-222 concentration in soil were measured portable radon monitor AlphaGUARD.
The NORM (226Ra, 232Th and 40K) concentration in soil was determined gamma spectrometry method.
Results. Study was held in the Olshanytsia (Rokytnyansky district, Kiev region).
It is found that indoor EECs in homes exceeds the action level of 100 Bq·m-3 in 37% of cases. The indoor EECs varied from 10 Bq·m-3 to 470 Bq·m-3, the arithmetic mean was 129 Bq·m-3, the ge-ometric mean was 80 Bq·m-3, the standard deviation was 125 Bq·m-3. Radon concentrations in soil was 18-27 kBq·m-3. The 226Ra concentration was 5-37 Bq·kg-1 at the ground surface and 16-35 Bq·kg-1 at depth.
Thereby, studies established that houses are located in the area of low radon risk (<50 kBq·m 3) and low concentration of 226Ra (<50 Bq·kg-1).
Determined that design features are the cause of high 222Rn levels in homes.
Materials and methods. The study included: measurements indoor 222Rn in homes, 222Rn con-centration in soil, NORM concentrations (226Ra, 232Th and 40K) in soil near the selected houses.
The passive track method were using for indoor radon-222 measurements with using nitrate-cellulose film LR-115 as a detector.
Radon-222 concentration in soil were measured portable radon monitor AlphaGUARD.
The NORM (226Ra, 232Th and 40K) concentration in soil was determined gamma spectrometry method.
Results. Study was held in the Olshanytsia (Rokytnyansky district, Kiev region).
It is found that indoor EECs in homes exceeds the action level of 100 Bq·m-3 in 37% of cases. The indoor EECs varied from 10 Bq·m-3 to 470 Bq·m-3, the arithmetic mean was 129 Bq·m-3, the ge-ometric mean was 80 Bq·m-3, the standard deviation was 125 Bq·m-3. Radon concentrations in soil was 18-27 kBq·m-3. The 226Ra concentration was 5-37 Bq·kg-1 at the ground surface and 16-35 Bq·kg-1 at depth.
Thereby, studies established that houses are located in the area of low radon risk (<50 kBq·m 3) and low concentration of 226Ra (<50 Bq·kg-1).
Determined that design features are the cause of high 222Rn levels in homes.
REFERENCES:
1. WHO Handbook on Indoor Radon: a Public Health Perspective. H. Zeeb and F. Shannoun (eds.). WHO ; 2009 : 94 p.
2. Radiological Protection against Radon Exposure. ICRP Publication 126. Annals of the ICRP. 2014 ; 43(3) : 73 p.
3. Pavlenko Ò.Î. Vestnik gigieny I epidemiologii. 2009 ; 13 (1) : 165-173 (in Ukrainian).
4. Ministry of Public Health of Ukraine. Vymiriuvannia kontsentratsii radonu-222 u povitri budynkiv metodom pasyvnoi trekovoi radonometrii z vykorystanniam pryladu "Track 2010Z". MVK 6.6.2.-063-2000: metodychni vkazivky z metodiv kontroliu [Measurement of Radon-222 Concentration of the Indoor Air by the Passive Track Radonometry Method with the Use of the "Track 2010Z". GCM 6.6.2.-063-2000: Guidance on Control Methods]. Kyiv ; 2000 : 21 p. (in Ukrainian).
5. Sobolev I.A. and Belyayev E.N. (eds.). Rukovodstvo po metodam kontrolya za radioaktivnostyu okruzhayushchey sredy [Guidance on the Methods for the Monitoring of the Environmental Radioactivity ]. Ìoscow : Meditsina ; 2002 : 432 p. (in Russian).
6. Normy radiatsiinoi bezpeky Ukrainy (NRSU-97): Derzhavni hihiienichni normatyvy. DHN 6.6.1.-6.5.001-98 [Radiation Safety Standards of Ukraine (NRSU-97): State Hygienic Standards. DGN 6.6.1.-6.5.001-98 ]. Kyiv ; 1998 : 135 p. (in Ukrainian).
7. Sundén G., Maxe L. and Lång L.-O. Regional övervakning av grundvattenkemi. Utvärdering avdelprogram. SGU-rapport 2014:23. Stockholm ; 2014 : 54 p. (in Swedish).