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Quantitative measurement of specific activities of natural and anthropogenic radionuclides in
soil samples from Phuket province
§š´¥¦´˜œr »‡¦°Š¸¡ 1 «» £ª»•· ÁÈ‹„»¨2 ¨³ž¦³Š‡r Á„¬¦µ›·‡»–3
Ruthairat Boonkrongcheep1 Supphawut Benjakul2 and Prasong Kessaratikoon3
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Šµœª·‹´¥œ¸Ê ŗošÎ µ„µ¦˜¦ª‹ª´—¨³ª·Á‡¦µ³®r ‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °Šœ·ªÅ‡¨—r„´¤¤´œ˜¦´Š¸›¦¦¤µ˜· (40K 226 Ra ¨³
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ª· š¥µ«µ˜¦r ¤®µª·š¥µ¨´¥š´ „¬·– ª·š¥µÁ ˜Š ¨µ ץčo®¨nŠ„εÁœ·—¦´ Š¸¤µ˜¦“µœŽ¸ÁŽ¸¥¤-137(Cs-137) Ç
°¨šr-60 (Co-60) ¨³ÂÁ¦¸¥¤-133 (Ba-133)Ĝ„µ¦ž¦´Áš¸ ¥¡¨´ŠŠµœ ¨³Äo µ¦¤µ˜¦“µœœ·— IAEA/RGU–1
RGTh–1 KCl ¨³ IAEA/SL–2 Ĝ„µ¦ª·Á‡¦µ³®r¨³‡Îµœª–‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °Šœ·ªÅ‡¨—r„´¤¤´œ˜¦´Š¸š¸ É
˜o°Š„µ¦ Ĝ„µ¦˜¦ª‹ª´—˜n¨³˜´ ª°¥nµŠÄo Áª¨µÁž}œ 10,800 ª·œµš¸ ®¦º ° 3 ´ÉªÃ¤Š ‹µ„Ÿ¨„µ¦ª·Á‡¦µ³®r ‡nµ„´¤¤´œ˜£µ¡
‹ÎµÁ¡µ³ÁŒ¨¸É¥ °Š 40K 226Ra 232 Th ¨³ 137Cs Ĝ˜´ª°¥n µŠ—·œ ¡ªnµ ¤¸‡nµ¡· ´¥°¥¼n ĜnªŠ 202.30 – 18803.28 Bq/kg
宦´ 40K 0.00 – 830.82 Bq/kg 宦´  226 Ra 20.23 – 1014.21 Bq/kg 宦´ 232 Th ¨³ 0.00 – 11.26 Bq/kg
宦´ 137Cs ¤¸ ‡nµÁŒ¨¸É¥Áž}œ 4092.29 ± 267.05 Bq/kg 212.55 ± 10.18 Bq/kg 203.98 ± 9.58 Bq/kg ¨³ 1.15 ±
0.57 Bq/kg ˜µ¤¨Îµ—´ š´ÊŠœ¸Ê ŗo ‡Îµœª–°´ ˜¦µž¦·¤µ–¦´Š¸—¼—„¨ºœÄœ°µ„µ« (D) ‡nµ„´¤¤´œ˜£µ¡¤¤¼ ¨Á¦Á—¸¥¤ (Raeq)
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o°¤¼¨‡n µÁŒ¨¸É¥„´ ¤¤´œ˜£µ¡‹Î µÁ¡µ³ °Š 40K 226 Ra ¨³ 232Th Ĝ˜´ ª°¥nµŠ—·œš¸É˜¦ª‹ª´ —Å—o ¨³Å—o šÎµ„µ¦Áž¦¸¥Áš¸¥
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‡ÎµÎµ‡´ : „´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °´˜¦µž¦·¤µ–¦´ Š¸—¼—„¨ºœÄœ°µ„µ« „´ ¤¤´œ˜£µ¡¦´Š¸ ¤¤¼¨Á¦Á—¸¥¤ —´œ¸ ‡ªµ¤Á¸É¥Š
¦´Š¸š¸Éŗo¦´‹µ„£µ¥œ°„¦nµŠ„µ¥ ž¦·¤µ–¦´Š¸¥´ŠŸ¨š¸Éŗo¦´˜n°že
1 œ· ·˜ž¦·µÃš ®¨´„¼˜¦ ªš.¤.(¢d ·„r) µ µª·µ¢d ·„r ‡–³ª·š¥µ«µ˜¦r ¤®µª· š¥µ¨´¥š´„¬·– Š ¨µ 90000
Master’s Degree Student, Department of Physics, Faculty of Science, Thaksin University, Songkhla, 90000, Thailand.
2 Ÿ¼onª¥ª·‹´¥ µ µª· µ¢d ·„r ‡–³ª·š¥µ«µ˜¦r ¤®µª·š¥µ¨´¥š´„¬·– Š ¨µ 90000
Research Assistant, Department of Physics, Faculty of Science, Thaksin University, Songkhla, 90000, Thailand.
3 °µ‹µ¦¥rž¦³‹Îµ µ µª·µ¢d ·„r ‡–³ª·š¥µ«µ˜¦r ¤®µª· š¥µ¨´¥š´„¬·– Š ¨µ 90000
Dr.,Department of Physics, Faculty of Science, Thaksin University, Songkhla, 90000, Thailand.
Corresponding author : Ú¦«´¡šr : 081-5423598 E-mail:prasong@tsu.ac.th