IJLST 2016 Volume 9 Issue 12

Study of Radioactivity Concentration in Air of Dhaka city. Jannatul Ferdous, Md.Saddam Hossain and Md. Ashraful Hoque. IJLST (2016), 9(12):96-105

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Title:

Study of Radioactivity Concentration in Air of Dhaka city

Authors & Affiliation:

Jannatul Ferdous1, Md.Saddam Hossain2 and Md. Ashraful Hoque3

1,3 Heath physics Division, Atomic Energy Center, and Dhaka, Bangladesh

2 Dhaka University, Dhaka, Bangladesh

ferdous28@yahoo.com, a_hoque58@yahoo.com, saddamdu2010@gmail.com

Abstract:

Air monitoring is a continuous process which is needed to monitor for knowing the concentration of radionuclides present in the air. During this study, forty air samples were collected from different areas such as Hazaribagh Tannery Area, Plastic Goli Islambagh, Sayedabad Bus Terminal etc. which have been evaluated using high resolution gamma-ray spectrometry at Atomic Energy Center (AEC), Dhaka. From the obtained results it is found that the radioactivity concentrations of 238U, 232Th and 40K in the air samples varied from 3.93± 0.49 mBq/m3 to 1784 ± 87.16 mBq/m3, 0.0 to 399 ± 27.04 mBq/m3, 0.0 to 256 ± 3.81 mBq/m3 and the average values are 448 ± 16.09 mBq/m3, 90.71 ± 8.56 mBq/m3 and 97 ± 3.54 mBq/m3 respectively. The artificial radionuclide such as 137Cs was not observed. The construction of Rooppur nuclear power plant is going on in Bangladesh. The concentrations of different radionuclides in air particle of present study will be helpful to monitor and compare the concentration of radionuclides in air samples around Rooppur Nuclear Power Plant. The main purpose of the present research is to measure the radioactivity concentrations of different radionuclides in air particle which is helpful to establish the base line data.

Key words: Air particle, Radioactivity, Gamma spectrometry system and Dhaka city.