เอกสารการประชุมวิชาการและเสนอผลงานวิจัย มหาวิทยาลัยทักษิณ ครั้งที่ 19 2552 - page 1358

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„µ¦˜¦ª‹ª´—ž¦·¤µ–‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °ŠÃžÂ˜ÁŽ¸¥¤-40 (40K) Ĝ˜´ª°¥nµŠ o µª‹µ„«¼œ¥r ª·‹´¥
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Quantitative Measurement of Specific Activity 40K in Rice Sample from Rice Research Center
in the South of Thailand Using Gamma Spectrometry Technique
Ť¤¼œ Á‹p³¨¸1 ¨³ ž¦³Š‡r Á„¬¦µ›· ‡»–2*
Maimoon Jahlee1 and Prasong Kessaratikoon2*
š‡´—¥n°
ŗo šÎµ„µ¦˜¦ª‹ª´—ž¦·¤µ–‡n µ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °ŠÃžÂ˜ÁŽ¸ ¥¤-40 Ĝ˜´ª°¥nµŠ o µª‹Îµœªœ 38 ˜´ª°¥nµŠ š¸É
Á„ȝ‹µ„«¼œ¥rª·‹´¥ o µªšµŠ£µ‡Ä˜o°Šž¦³Áš«Åš¥‹Î µœªœ 4 ®nŠ ‡º° «¼ œ¥rª·‹´¥ o µªœ‡¦«¦¸›¦¦¤¦µ «¼ œ¥rª·‹´¥ oµª„¦³¸É
«¼œ¥rª·‹´¥ oµª¡´ š¨»Š ¨³«¼œ¥rª·‹´¥ o µªž{˜˜µœ¸ ץčo®´ ªª´—Á‹°¦r¤µÁœ¸¥¤¦· »š›·Í(HPGe)¨³¦³ª· Á‡¦µ³®r
„¤¤µÁž„ئÁ¤˜¦¸°Š®o°Šž’·´ ˜·„µ¦¢d · „rœ· ªÁ‡¨¸¥¦r ¨³¢d · „rª´ —» £µ‡ª·µ¢d · „r ‡–³ª· š¥µ«µ˜¦r
¤®µª·š¥µ¨´¥š´„¬·– čo®¨nŠ„εÁœ·—¦´ Š¸¤µ˜¦“µœ Cs-137 ¨³ Co-60 Ĝ„µ¦ž¦´Áš¸¥¡¨´ ŠŠµœ °ŠÁ‡¦ºÉ°Š¤º°Â¨³
¦³„µ¦˜¦ª‹ª´— ¨³Äo µ¦¤µ˜¦“µœœ¤žœÁžg°œ¦´Š¸ IAEA-152 Ĝ„µ¦Áž¦¸¥Áš¸¥Á¡ºÉ°˜¦ª‹ª´—ž¦·¤µ–‡n µ„´¤
¤´œ˜£µ¡‹ÎµÁ¡µ³ °ŠÃžÂ˜ÁŽ¸ ¥¤-40 ( 40K) Ĝ˜´ª°¥nµŠ o µª 宦´Áª¨µš¸ÉčoĜ„µ¦˜¦ª‹ª´— °Šš»„˜´ª°¥nµŠÁž}œ
10,000 ª·œµš¸ ¡ªnµž¦· ¤µ–‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °ŠÃžÂ˜ÁŽ¸¥¤-40 Ĝ˜´ª°¥nµŠ oµªš¸É Á„ȝ‹µ„¦·Áª–«¼œ¥r ª·‹´¥ oµª
œ‡¦«¦¸ ›¦¦¤¦µ¤¸‡nµ¡· ´¥Ášnµ„´ 123.16 - 162.33 Bq/kg ¤¸ ‡nµÁŒ¨¸É¥Ášnµ„´ 146.01 ± 9.65 Bq/kg «¼œ¥rª·‹´¥ oµª„¦³¸É
¤¸‡nµ¡· ´¥Ášn µ„´ 140.11 - 197.33 Bq/kg ¤¸‡nµÁŒ¨¸É¥Ášnµ„´ 160.72 ± 11.21 Bq/kg «¼œ¥rª·‹´¥ oµª¡´š¨»Š¤¸‡nµ¡· ´¥Ášnµ„´
94.64-199.54 Bq/kg ¤¸‡nµÁŒ¨¸É¥Ášnµ„´ 162.93 ±11.89 Bq/kg ¨³«¼œ¥r ª·‹´¥ o µªž{˜˜µœ¸ ¤¸‡nµ¡· ´ ¥Ášnµ„´ 85.97 -
297.37 Bq/kg ×¥¤¸‡nµÁŒ¨¸É¥Ášnµ„´ 161.83 ± 11.62 Bq/kg œ°„‹µ„œ¸Ê ŗoœÎ µ‡nµÁŒ¨¸É¥ °Š‡n µ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °Š
ޘÁŽ¸¥¤-40 Ĝ˜´ ª°¥nµŠ oµªš´Ê Š®¤—¤µÁž¦¸¥Áš¸¥ o°¤¼¨š¸É¤¸°¥¼n°ŠÎµœ´ „ž¦¤µ–¼Á¡ºÉ°´œ˜·Â¨³ o°¤¼¨ °Š‡nµ„´¤
¤´œ˜£µ¡‹ÎµÁ¡µ³ °ŠÃžÂ˜ÁŽ¸¥¤-40 Ĝ°µ®µ¦µŠœ·—š´ÉªÃ¨„ ¡ªnµÃžÂ˜ÁŽ¸¥¤-40 Ĝ˜´ª°¥n µŠ oµª¤¸ž¦·¤µ–°¥¼n
ĜÁ„–”rž„˜·
‡ÎµÎµ‡´ : „´¤¤´œ˜£µ¡¦´Š¸‹ÎµÁ¡µ³ ޘÁŽ¸ ¥¤-40 ®´ªª´—Á‹°¦r¤µÁœ¸¥¤¦· »š›·Í (HPGe) ¦³ª·Á‡¦µ³®r
Â„¤¤µÁž„ئÁ¤˜¦¸
Abstract
Specific activities of potassium-40 in 38 rice samples colleted from 4 Rice Research Centers in southern
region of Thailand (Nakhon Si Thammarat Rice Research Center, Krabi Rice Research Center, Phatthalung Rice
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1 œ· ·˜ž¦· µ˜¦¸ ®¨´ „¼˜¦ ªš..(¢d ·„r) £µ‡ª·µ¢d ·„r ‡–³ª·š¥µ«µ˜¦r ¤®µª· š¥µ¨´¥š´„¬·– Š ¨µ 90000
2*°µ‹µ¦¥r £µ‡ª·µ¢d ·„r ‡–³ª·š¥µ«µ˜¦r ¤®µª· š¥µ¨´¥š´„¬·– Š ¨µ 90000
Ú¦«´¡šr : 081-5423598 ; Email :prasong@tsu.ac.th