Determination of activity concentration of Radon-222 by using its daughter progeny Pb-214 and bi-214 in water by using Gamma spectrometry / Elly Munirah Marzuki

Marzuki, Elly Munirah (2009) Determination of activity concentration of Radon-222 by using its daughter progeny Pb-214 and bi-214 in water by using Gamma spectrometry / Elly Munirah Marzuki. Student Project. Faculty of Applied Sciences, Shah Alam. (Unpublished)

Abstract

In this thesis, low background gamma ray spectrometer has been applied to determine the activity concentration of radon-222 in water collected from ex-mining’s lake at Universiti Teknologi MARA Training Centre, Kampung Gajah, Perak. This is simple method, where we just only measure the sample waters with a germanium (Ge) detector using the gamma rays spectrometer from the radon-222 daughter nuclides Pb-214 and Bi-214. Sample water collected are directly pour into Marinelli beaker and sealed and stored for 3 weeks to allow radon-222 and daughter nuclides were in radioactive equilibrium before counting. The radon activity concentration is determined by taking the average weighed of the concentrations derived from γ-ray lines associated with Pb-214 and Bi-214 decay. We cannot direct counting radon-222 by using gamma spectrometry because it’s not emitted gamma radiation, but it’s is alpha emitted radionuclides. In this study, the activity concentration of radon-222 is higher at location 11 either for unfiltered and filtered water samples, which is 4429 Bq/L for unfiltered and 10015 Bq/L for filtered water samples. While, the lowest activity concentration of radon-222 for unfiltered and filtered water samples was investigated at location 1 and location 2 with the values 1328 Bq/L and 3308 Bq/L respectively. The activity concentration of radon-22 in this study area is higher and need more attention from related authorities because it can give higher percentage of risk of radiation at that area.

Download

Full text not available from this repository.

Metadata

Item Type: Monograph (Student Project)
Creators:
CreatorsID Num.
Marzuki, Elly MunirahUNSPECIFIED
Subjects: UNSPECIFIED
Q Science > QD Chemistry
Divisions: Faculty of Applied Sciences
Item ID: 750
Uncontrolled Keywords: Radon-222, gamma radiation, pb-214, bi-214, gamma spectrometry
URI: http://ir.uitm.edu.my/id/eprint/750

Actions (login required)

View Item View Item