full2010.pdf - page 304

266
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(Ra eq) ¨³‡nµ—´œ¸ª´—‡ªµ¤Á¸É ¥Š¦´Š¸š¸Éŗo ¦´‹µ„£µ¥œ°„¦nµŠ„µ¥ (Hex) ¡ªn µ¤¸‡nµ ¼Š„ªnµ‡nµÁŒ¨¸É¥š´ÉªÃ¨„š¸ÉÁŸ¥Â¡¦n ×¥
UNSCEAR
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‡nµ„´¤¤´œ˜£µ¡¦´Š¸ ‹ÎµÁ¡µ³ÁŒ¨¸É¥ °Š
˜´ª°¥nµŠ—· œ
(Bq/kg) D
(nGy/h)
Ra eq
(Bq/kg) Hex
Annual
External
Effective
Dose Rate
(mSv/y) Ra-226 Th-226 K-40
3. °ÎµÁ£°¦³Ãœ— (12) 60.84 35.58 1973.76 131.93 263.70 0.71 0.16
4. °ÎµÁ£°„¦³Â·œ›»r (4) 66.19 30.52 964.51 89.46 184.10 0.50 0.11
5. °ÎµÁ£°š·Š¡¦³ (12) 66.9 50.09 2045.27 146.72 296.01 0.80 0.18
6. °ÎµÁ£°·Š®œ‡¦ (11) 163.03 57.46 3372.45 250.57 504.88 1.36 0.31
7. °ÎµÁ£°‹³œ³ (14) 162.7 54.13 4521.34 295.91 588.25 1.59 0.36
8. °ÎµÁ£°Áš¡µ (7) 80.06 34.86 3148.46 188.97 372.34 1.01 0.23
9. °ÎµÁ£°œµšª¸ (10) 204.78 76.88 5189.82 357.16 714.33 1.93 0.44
10. °Î µÁ£°³oµ¥o°¥ (11) 37.37 28 1303.34 88.63 177.77 0.48 0.11
11. °Î µÁ£°œµ®¤n°¤ (4) 113.62 54.83 2555.66 192.34 388.81 1.05 0.24
12. °Î µÁ£°‡ªœÁœ¸¥Š (4) 62.71 48.26 3537.39 205.42 404.10 1.09 0.25
13. °Î µÁ£°³Á—µ (9) 51.88 45.34 1875.6 129.81 261.14 0.71 0.16
14. °Î µÁ£°¦´˜£¼¤· (4) 89.61 69.5 3233.61 218.48 437.98 1.18 0.27
15. °Î µÁ£°‡¨°Š®°¥Ã nŠ (4) 77.5 95.47 1550.13 159.38 333.38 0.90 0.20
16. °Î µÁ£°µŠ„¨Éε (4) 110.01 83.99 3546.79 249.88 503.22 1.36 0.31
‡nµÁŒ¨¸É¥ 99.48 54.19 3149.26 210.00 419.45 1.13 0.26
UNSCEAR
(1988, 1993, 2000)
- - - 55 370 1 0.48