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˜µ¦µŠš¸É 1 —Š„µ¦Áž¦¸¥Áš¸¥‡nµÁŒ¨¸É¥ °Š‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °Š˜´ ª°¥nµŠ—· œ š´ÊŠ 3 °ÎµÁ£° Ĝ‹´ Š®ª´—£¼Á„Ș„´
o°¤¼ ¨ °ŠÎµœ´„Šµœž¦¤µ–¼Á¡ºÉ°´œ˜·Â¨³ o °¤¼¨‹µ„„µ¦ª·‹´¥š´ÉªÃ¨„
¦µ¥„µ¦ ‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ÁŒ¨¸É¥ (Bq/kg)
40K 226Ra 232 Th 137Cs
‡nµÁŒ¨¸É¥ °Š˜´ª°¥nµŠ—·œ
š´ÊŠ 3 °ÎµÁ£° Ĝ‹´Š®ª´—£¼Á„Ș 4092.29 ± 267.05 212.55 ± 10.18 203.98 ± 9.58 1.15 ± 0.57
‡nµÁŒ¨¸É¥ °Š œŠ. ž. (£µ‡Ä˜o) 511.04 ± 7.04 171.55 ± 3.13 211.19 ± 1.98 1.13 ± 0.49
‡nµÁŒ¨¸É¥ °Š œŠ.ž. (ž¦³Áš«Åš¥) 400 48 40 –
‡nµÁŒ¨¸É¥ °Š„µ¦ª·‹´¥š´ÉªÃ¨„ 400 35 30 –
nªœŸ¨„µ¦‡Îµœª–°´˜¦µž¦· ¤µ–¦´Š¸—¼—„¨ºœÄœ°µ„µ« (D) „´¤¤´œ˜£µ¡¤¤¼¨Á¦Á—¸¥¤ (Ra eq) —´œ¸‡ªµ¤Á¸É¥Š
°Š¦´Š¸ £µ¥œ°„ (Hex) ¨³°´˜¦µž¦·¤µ–¦´Š¸¥´ŠŸ¨š¸Éŗo¦´˜n°že (AEDout ) ץčo‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °Šœ·ªÅ‡¨—r
„´¤¤´œ˜¦´Š¸Äœ›¦¦¤µ˜· 40K 226Ra ¨³ 232Th š¸É˜¦ª‹ª´ —Å—oĜ˜´ª°¥n µŠ—·œ œÎµÅžÁž¦¸¥Áš¸¥„´‡nµš¸É„ε®œ—Ūo×¥
°Š‡r„¦‡ªµ¤¦nª¤¤º°šµŠÁ«¦¬“«µ˜¦r¨³„µ¦¡´•œµ (Organization for Economic Cooperation and Development :
OECD, 1979) ¨³‡–³„¦¦¤„µ¦ª·š¥µ«µ˜¦r °Š°Š‡r„¦®ž¦³µµ˜·Á„¸É ¥ª„´Ÿ¨ °Š¦´Š¸ž¦¤µ–¼ (United
Nations Scientific Committee on the Effects of Atomic Radiation : UNSCEAR, 1988, 1993, 2000) ץ—ŠŸ¨
„µ¦Áž¦¸¥Áš¸¥ÅªoĜ˜µ¦µŠš¸É 2
˜µ¦µŠš¸É 2 —Š„µ¦Áž¦¸ ¥Áš¸¥°´˜¦µž¦·¤µ–¦´ Š¸Â„¤¤µ—¼ —„¨ºœÄœ°µ„µ« (D) „´¤¤´œ˜£µ¡¦´Š¸ ¤¤¼¨ °ŠÁ¦Á—¸ ¥¤
(Raeq) —´ œ¸ ª´ —‡ªµ¤Á¸É ¥Š¦´Š¸ š¸Éŗo ¦´‹µ„£µ¥œ°„¦n µŠ„µ¥ (Hex ) ¨³ž¦·¤µ–¦´Š¸ ¥´ŠŸ¨š¸É ŗo¦´‹µ„
£µ¥œ°„¦nµŠ„µ¥ž¦³‹Îµže (AEDout ) °Š˜´ª°¥n µŠ—·œ š´ÊŠ 3 °Î µÁ£° ‹´Š®ª´ —£¼Á„È ˜ „´‡n µÁŒ¨¸É ¥š´ÉªÃ¨„š¸É
ÁŸ¥Â¡¦n×¥ UNSCEAR (1988, 1993, 2000)
™µœš¸É S.A. (average) (Bq/kg) D
(nGy/h)
Raeq
(Bq/kg) Hex
AEDout
(mSv/y) 40K 226Ra 232 Th
1. °ÎµÁ£°Á¤º°Š (69) 4163.29 200.51 174.99 371.94 770.75 2.08 0.46
2. °ÎµÁ£°„³š¼o (29) 7514.33 327.05 242.65 611.00 1251.72 3.38 0.75
3. °ÎµÁ£°™¨µŠ (81) 3011.73 187.36 214.42 341.66 725.34 1.96 0.42
‡nµÁŒ¨¸É¥ 4092.29 212.55 203.98 392.05 818.75 2.21 0.48
UNSCEAR (1988, 1993, 2000) – – – 55.00 370.00 1.00 0.48
¦»žŸ¨„µ¦ª·‹´¥
‹µ„Ÿ¨„µ¦˜¦ª‹ª´—¨³ª·Á‡¦µ³®r‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °Šœ· ªÅ‡¨—r„´¤¤´œ˜¦´Š¸Äœ›¦¦¤µ˜· 40K 226Ra
¨³ 232Th Ĝ˜´ª°¥nµŠ—·œ ‹Îµœªœ 103 ˜´ª°¥nµŠ š¸ÉÁ„ȝ‹µ„¦· Áª–˜nµŠ Ç Äœ°ÎµÁ£°Á¤º°Š °ÎµÁ£°„³š¼o ¨³°ÎµÁ£°™¨µŠ
°Š‹´Š®ª´—£¼Á„Ș ‹µ„˜µ¦µŠš¸É 1 ¡ªnµ ¡ºÊœš¸É¦·Áª–‹´Š®ª´—£¼ Á„Ș¤¸‡nµÁŒ¨¸É¥ °Š‡nµ„´¤¤´œ˜£µ¡‹ÎµÁ¡µ³ °Šœ·ªÅ‡¨—r