| 珠海市大气环境中氡浓度的测定 |
| 摘要点击 1516 全文点击 3464 投稿时间：1999-03-06 |
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| 中文关键词 氡 固体径迹探测器 珠海市 大气环境 |
| 英文关键词 radon solid state alpha track detector Zhuhai city atmospheric environment |
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| 中文摘要 |
| 采用固体径迹探测器累积氡测定方法对珠海市不同地质背景、不同的建筑风格的房屋室内、外地面水平氡浓度进行了测定.结果表明,珠海市室内、外空气中氡浓度的平均值分别为:164.2 Bq/m3 和75.2 Bq/m3,居全国各大城市之首,仅次于我国的个旧地区,但大多数住房的室内氡浓度都低于200 Bq/m3.研究发现秋冬季的室外氡浓度高于春夏季的室外氡浓度,而室内氡浓度的变化情况则相反,春夏季高于秋冬季;室内氡浓度随楼层的升高而呈降低的趋势.地下水多为强氡水,室内氡浓度高的建筑物通常是使用地下水或位于断裂带附近。 |
| 英文摘要 |
| Solid state alpha track detectors were used to measure indoor and outdoor radon concentrations in different geological background,different seasons,layers of different altitudes and different built style in Zhuhai city.Mean indoor and outdoor radon concentrations are 164.2 Bq/m3 and 75.2 Bq/m3 respectively,which are the highest in all big city in China,only next to Gejiu area.The indoor radon concentrations in the most of buildings are lower than limited datum(200 Bq/m3).Outdoor radon concentrations are higher in autumn and winter than in spring and summer,but indoor radon concentrations are higher in spring and summer than in autumn and winter.With raising of altitude of layer,the indoor air radon will decrease.The radon in groundwater is high,and the room with high indoor radon are using groundwater or set in fracture belts. |
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