Pembinaan kebuk radon untuk penentuan emanasi radon menggunakan alat permonitoran radon

Translated title of the contribution: Construction of radon chamber for determination of radon emanation using continuous radon monitor

Norafatin Khalid, Amran Ab. Majid, Redzuwan Yahaya, Muhamad Samudi Yasir, Faizal K.P. Kunchi Mohamed

Research output: Contribution to journalArticle

Abstract

An airtight chamber was designed and constructed in order to determine the emanation and the activity concentration of radon and to optimize measurement of radon emanation in terms of temperature, pressure and humidity. In this study, an airtight chamber in size of 0.50 m (width) x 0.40 m (depth) x 0.35 m (height) with total chamber volume of about 0.07 m3 was built by using a perspex material with 6 x 10−3 m of thicknesses. A Continuous Radon Monitor (CRM) Sun Nuclear model 1029 was used to measure the emanation of radon in the chamber. This homemade chamber has a rectangular opening with two key systems to insert and remove samples and continuous radon monitor to prevent any of disturbances to the flow of air in the chamber.An efficiency and leakage tests were carried out before radon activity was measured. Xenotime mineral was inserted into the chamber as a source of radon (222Rn). Radon measurements were done for each hour over 96 hours counting time. The results indicated that the background of radon concentration in an empty chamber was 21.0 ± 4.8 Bq m−3. The usage of 0.15 kg, 0.25 kg and 0.50 kg of xenotime mineral recorded 249.6 ± 119.1 Bq m−3, 400.0 ± 187.6 Bq m−3, 2236.6 ± 213.8 Bq m−3 of radon activities respectively.The effect of volume of the homemade radon chamber, the mass of xenotime, temperature, pressure and humidity to the radon emanation will be discussed in this paper.

Original languageUndefined/Unknown
Pages (from-to)618-628
Number of pages11
JournalMalaysian Journal of Analytical Sciences
Volume18
Issue number3
Publication statusPublished - 2014

Fingerprint

Radon
Minerals
Atmospheric humidity
Leakage (fluid)
Polymethyl Methacrylate
Sun

Keywords

  • Radon
  • Radon chamber
  • Radon monitor
  • Xenotime

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Pembinaan kebuk radon untuk penentuan emanasi radon menggunakan alat permonitoran radon. / Khalid, Norafatin; Ab. Majid, Amran; Yahaya, Redzuwan; Yasir, Muhamad Samudi; K.P. Kunchi Mohamed, Faizal.

In: Malaysian Journal of Analytical Sciences, Vol. 18, No. 3, 2014, p. 618-628.

Research output: Contribution to journalArticle

Khalid, Norafatin ; Ab. Majid, Amran ; Yahaya, Redzuwan ; Yasir, Muhamad Samudi ; K.P. Kunchi Mohamed, Faizal. / Pembinaan kebuk radon untuk penentuan emanasi radon menggunakan alat permonitoran radon. In: Malaysian Journal of Analytical Sciences. 2014 ; Vol. 18, No. 3. pp. 618-628.
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