| 朱国英,王伟华,陈炳如.上海市环境氚调查与所致居民剂量估算[J].中华放射医学与防护杂志,1996,16(6):368-371 |
| 上海市环境氚调查与所致居民剂量估算 |
| Tritium levels in foodstuffs and water and dose assessment to residents in Shanghai region |
| 投稿时间：1995-04-11 修订日期：1995-08-16 |
| DOI： |
| 中文关键词: 食品 水 环境 氚 有效剂量当量 |
| 英文关键词:Foodstuffs water environment tritium committed dose equivalent |
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| 中文摘要: |
| 目的: 为了解上海市的环境氚含量及其由此所致居民剂量, 从1988年～1993年取不同的环境样品进行了氚含量的测量。方法:用液体闪烁法测量氚。结果: 发现上海市环境水和食品氚含量为一般本底水平。其中自来水和地表水氚浓度分别是1.19Bq·L-1和1.54Bq·L-1, 且枯水期地表水氚浓度明显高于丰水期(P<0.05).空气氚和雨水氚浓度均值是0.63Bq·m-3和3.69Bq·L-1, 季节变化规律不明显。食品游离水氚和有机结合氚含量均值分别是4.11Bq·L-1和28.44Bq·L-1, SAR值是6.92.上海地区居民的待积有效剂量当量为0.24μSv, 剂量的50%是来自食品。结论: 上海环境氚含量属一般本底水平, 对居民身体不构成危害。 |
| 英文摘要: |
| This paper reports on the concentrations of tritium in water (tap water, river and lake water etc), air. region and foodstuff samples collected from Shanghai rain. From these measurements, levels of population dose due to tritium were estimated. The average 3H concentration is 1.19 Bq. L-1 in drinking water, l.54Bq. L-1 in river and lake water,0.63Bq. M-3 in air and 3.69Bq. L-1 in rain, and all of them are in the normal range. The average 3H concentration in the free water of food is 4.11Bq. L-1 and the specific activity in the tissue-bound 3H is 28.44Bq. L-1,6.9 times higher than that in the free water tritium of food. The committed dose equivalent based on the measurements is 0.24 μSv, and 50o% of the committed dose equivalent comes from food. |
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