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Abstract

An indoor radon survey has been carried in 120 schools situated in four districts of the Punjab province, namely Attock, Chakwal, Jhelum, and Rawalpindi. In each season, a total of 360 CR-39-based radon detectors were installed in the selected schools. After exposure the detectors were etched in 6M NaOH at 80°C solution for 16 h and tracks densities, which are related to the radon concentration, were measured. Indoor radon concentration varied from 18 ± 7 to 168 ± 5 Bq·m^-3 with an average value of 52 ± 9 Bq·m^-3. High indoor radon concentration values were found in the summer season, whereas lower values were recorded in autumn season. The mean annual radon effective dose equivalent was estimated to be 0.49 mSv per year. Present indoor radon concentration values are higher than that of the world average value of 40 Bq·m^-3, but lower than the action level recommended by the ICRP.

Keywords

Indoor radon CR-39 detector Chemical etching Punjab Province Different seasons

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References

Durrani SA , Ilic R. : Radon Measurements by Etched Track Detectors: Applications in Radiation Protection, Earth Sciences, and the Environment , Singapore, World Scientific, 1997 .

Tufail M. , Matiullah GSL , Khan EU , Bashir A. : Estimation of internal and external dose equivalent rates for the dwellers of Dera Ismail Khan, Pakistan: Nucl Tracks Radiat Meas 1992;22:479-482.

Miles JCH : Temporal variation of radon levels in houses and implications for radon measurement strategies: Radiat Prot Dosim 2001;93(4):369-375.

Kullab MK , Al-Bataina BA , Ismail AM , Abumurad KM , Ghaith A. : Study of radon-222 concentration levels inside kindergartens in Amman: Radiat Meas 1997 ;28:699-702.

Vaupotic J. , Ilona Hunyadi I. , Baradacs E. : Thorough investigation of radon in a school with elevated levels : Radiat Meas 2001;34:477-482.

Matiullah BA , Kudo K. , Yang X. : Radon measurements in some houses of Tsukuba science city- Japan: Nucl Tracks Radiat Meas 1993;22:395-398.

Darby S. , Deo H. , Doll R. : Radon: a likely carcinogen at all exposures: Annals Oncol 2001;12:1341-1351.

Bilban M. , Vaupotic J. : Chromosome aberrations study of pupils in high radon level elementary school : Health Phys 2001;80:157-163.

Stidley CA , Samet JM : A review of ecologic studies of lung cancer and indoor radon: Health Phys 1993;65:234-251.

10.

Seve JK , Tomasek L. , Placek V. , Horacek J. : Cancer in man after exposure to radon daughters: Health Phys 1998;54:27-32.

11.

Lubin JH , Wang ZY , Boice Jr, JD , Xu ZY , Blot WJ , De Wang L. , Kleinerman RA : Risk of lung cancer and residential radon in China: pooled results of two studies: Intl J Cancer 2004;109(1):132-137.

12.

Unscear : Sources and effects of ionizing radiation : Report to the General Assembly, New York, United Nations, 2000.

13.

Singh S. , Kumar A. , Singh B. : Passive integrating radon studies for environmental monitoring in Hamirpur district, Himachal Pradesh, India using solid state nuclear track detectors: Radiat Meas 2005;39:81-85.

14.

Matiullah AA , Rehman S. , Mirza ML : Indoor radon levels and lung cancer risk estimates in seven cities of the Bahawalpur division, Pakistan: Radiat Protect Dosim 2003; 107(4):269-276.

15.

Khatibeh AJH , Matiullah KMA , Abu-Murad KM , Kullab M. , Al-Bataina BA : Measurement of radon concentration levels in some cities of Jordan: Radiat Meas 1997 ;28:589-590.

16.

Xiaoyan L. , Zheng B. , Wang Y. , Wang X. : A study of daily and seasonal variations of radon concentrations in underground buildings J. Environ. Radioactivity 2006; 87:101-106.

17.

AL-Jarallah MI , Rehman FU : Indoor radon concentration measurement in the dwellings of Al-Jauf region of Saudi Arabia: Radiat Prot dosim 2006;121(3):293-296.

18.

Matiullah FM : Indoor radon concentration levels in several districts of the Punjab province - Pakistan: Radiat Meas 2008;43:380-384.

19.

Rahman SU , Matiullah AJ : Measurement of indoor radon concentration levels in Islamabad, Pakistan: Radiat Meas 2008;43:401-404.

20.

Matiullah AN , Khatibeh Ajah : Comparative studies of indoor radon concentration levels in Jordan using CR-39 based bag and cup dosimeters : Health Phys 1998;75(1):60-62.

21.

Icrp : International Commission on Radiological Protection, Oxford, ICRP Publication 65, Pergamon Press, 1993.

Indoor Radon Survey in 120 Schools Situated in Four Districts of the Punjab Province — Pakistan

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