中华放射医学与防护杂志
中華放射醫學與防護雜誌
중화방사의학여방호잡지
Chinese Journal of Radiological Medicine and Protection
2013年
2期
170-173
,共4页
肖磊%王南萍%李灿苹%曾立晖
肖磊%王南萍%李燦蘋%曾立暉
초뢰%왕남평%리찬평%증립휘
室内氡%活性炭盒累积法%地质背景
室內氡%活性炭盒纍積法%地質揹景
실내동%활성탄합루적법%지질배경
Indoor radon concentration%Activated charcoal adsorption method%Geological background
目的 通过对珠海市3个典型区域进行调查,探讨不同地质背景区域室内氡浓度的水平和分布.方法 按照地表岩性不同,分为珠海花岗岩、斗门花岗岩和斗门第四纪3个测区,使用活性炭盒累积法进行室内氡浓度测量.在部分测点同时使用活性炭盒累积法和固体径迹法进行室内氡浓度测量.结果 对80间房屋的活性碳盒累积法测量结果显示,珠海平均室内氡浓度为(66.0±49.8) Bq/m3,最大室内氡浓度为1078.5 Bq/m3.测区内23个测点短期活性炭盒累积法的测量结果为(69.5±37.7) Bq/m3,长期固体径迹法的测量结果为(88.8±49.1) Bq/m3.不同地表岩性区域室内氡浓度分别为:珠海花岗岩测区为(73.6±61.0)Bq/m3、斗门花岗岩测区为(87.5±58.3) Bq/m3、斗门第四纪测区为(48.6±22.6) Bq/m3.结论 地表岩性对区域室内氡浓度水平具有明显影响,珠海花岗岩和斗门花岗岩测区室内氡浓度明显高于斗门第四纪测区.建议结合地质背景研究区域室内氡浓度水平与分布特征.
目的 通過對珠海市3箇典型區域進行調查,探討不同地質揹景區域室內氡濃度的水平和分佈.方法 按照地錶巖性不同,分為珠海花崗巖、鬥門花崗巖和鬥門第四紀3箇測區,使用活性炭盒纍積法進行室內氡濃度測量.在部分測點同時使用活性炭盒纍積法和固體徑跡法進行室內氡濃度測量.結果 對80間房屋的活性碳盒纍積法測量結果顯示,珠海平均室內氡濃度為(66.0±49.8) Bq/m3,最大室內氡濃度為1078.5 Bq/m3.測區內23箇測點短期活性炭盒纍積法的測量結果為(69.5±37.7) Bq/m3,長期固體徑跡法的測量結果為(88.8±49.1) Bq/m3.不同地錶巖性區域室內氡濃度分彆為:珠海花崗巖測區為(73.6±61.0)Bq/m3、鬥門花崗巖測區為(87.5±58.3) Bq/m3、鬥門第四紀測區為(48.6±22.6) Bq/m3.結論 地錶巖性對區域室內氡濃度水平具有明顯影響,珠海花崗巖和鬥門花崗巖測區室內氡濃度明顯高于鬥門第四紀測區.建議結閤地質揹景研究區域室內氡濃度水平與分佈特徵.
목적 통과대주해시3개전형구역진행조사,탐토불동지질배경구역실내동농도적수평화분포.방법 안조지표암성불동,분위주해화강암、두문화강암화두문제사기3개측구,사용활성탄합루적법진행실내동농도측량.재부분측점동시사용활성탄합루적법화고체경적법진행실내동농도측량.결과 대80간방옥적활성탄합루적법측량결과현시,주해평균실내동농도위(66.0±49.8) Bq/m3,최대실내동농도위1078.5 Bq/m3.측구내23개측점단기활성탄합루적법적측량결과위(69.5±37.7) Bq/m3,장기고체경적법적측량결과위(88.8±49.1) Bq/m3.불동지표암성구역실내동농도분별위:주해화강암측구위(73.6±61.0)Bq/m3、두문화강암측구위(87.5±58.3) Bq/m3、두문제사기측구위(48.6±22.6) Bq/m3.결론 지표암성대구역실내동농도수평구유명현영향,주해화강암화두문화강암측구실내동농도명현고우두문제사기측구.건의결합지질배경연구구역실내동농도수평여분포특정.
Objective To analyze the indoor radon level and distribution characteristic in different geological background by studying the indoor radon level in three typical areas in Zhuhai City.Methods The region of investigation includes three districts:granite area in Zhuhai District,granite area in Doumen District and the Quaternary sedimentary area in Doumen District.Activated charcoal adsorption method was used to measure the indoor radon concentrations.In some sampling sites,solid state nuclear track detectors were used at the same time for the indoor radon measurement.Results The average indoor radon level included 80 buildings was (66.0 ± 49.8) Bq/m3 using activated charcoal adsorption method and the maximum value was 1078.5 Bq/m3.The results of 23 sampling sites show that the average indoor radon level using solid state nuclear track detectors was (88.8 ± 49.1) Bq/m3,and (69.5 ± 37.7) Bq/m3 by activated charcoal adsorption method.The indoor radon concentration was (73.6 ± 61.0),(87.5 ± 58.3) and (48.6 ± 22.6) Bq/m3 in granite area in Zhuhai District,granite area in Doumen District and the Quaternary sedimentary area in Doumen District,respectively.Conclusions The surface lithology of an area has a certain impact on the indoor radon level.The indoor radon level in granite area in Zhuhai District and Doumen District is apparently higher than that in the Quaternary sedimentary area in Doumen District.The study of indoor radon level and distribution characteristic should be discussed in combination with geological background of area.
