1201
P72
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Measurement and Quantitative Analysis of Specific Activity of Natural Radionuclides
in Soil Samples Collected from Ranong Province, Thailand
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ó
1
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đïâÝüøøèǰüÜþŤ
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2
ǰĒúąðøąÿÜÙŤ
ǰđÖþøćíĉ
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è
3
*
Ruthairat Boonkrongcheep
1
, Busarin Kuaket
2
, Benjawan Wongjan
2
, Patchareeya Suakaew
2
and Prasong Kessaratikoon
3*
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íøøößćêĉ
40
K,
226
Ra Ēúą
232
Th) ìĊę
öĊ
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ćÜéĉ
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ìíĉĝ
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Ü HPGe) Ēúąøąïïüĉ
đÙøćąĀŤ
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è Āš
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40
K,
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232
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üÜ 16.03 – 1480.56, 11.39 – 280.03 Ēúą
5.81 – 234.13 Bq/kg öĊ
ÙŠ
ćđÞúĊę
÷đðŨ
î 442.30
r
13.61, 57.66
r
1.40 Ēúą 31.56
r
0.93 Bq/kg êćöúĞ
ćéĆ
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ĂöĎ
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÷Ĕîðøąđìýĕì÷ĒúąêŠ
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â:
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Ü ĒÖööćÿđðÖēêøđöêøĊ
Abstract
Specific activity of natural (
40
K,
226
Ra and
232
Th) radionuclides in 77soil samples collected from
5 districts
in Ranong province,
have been measured and analyzed. Experimental results were
obtained by using a high–purity germanium (HPGe) detector and gamma spectrometry analysis system
at Nuclear Physics laboratory in Department of Physics, Faculty of Science, Prince of Songkhla
University, Hatyai Campus. It was found that specific activities ranged from 16.03 – 1480.56, 11.39 –
280.03 and 5.81 – 234.13Bq/kg with mean values of 442.30
r
13.61, 57.66
r
1.40 and 31.56
r
0.93
Bq/kg, respectively. Moreover, the results were also compared with the Office of Atoms for Peace
(OAP) annual report data, research data in Thailand and worldwide evaluations.
Keywords:
Soil, Specific Activity, High–Purity Germanium (HPGe) Detector, Gamma Spectrometry
1
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Corresponding author: Tel.: 081-5423598 , E-mail address:
