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
2011年
3期
336-339
,共4页
崔宏星%武云云%张庆召%尚兵
崔宏星%武雲雲%張慶召%尚兵
최굉성%무운운%장경소%상병
室内%222Rn%220Rn%季节变化%甘肃
室內%222Rn%220Rn%季節變化%甘肅
실내%222Rn%220Rn%계절변화%감숙
Indoor%222Rn%220Rn%Seasonal variation%Gansu Province
目的 研究我国传统住房室内222Rn、220Rn随季节变化的规律.方法 选择甘肃省陇东地区5种不同类型的传统建筑44间及普通砖瓦房5间.采用LD-P型222Rn-220Rn分辨累积探测器,按冬、春、夏、秋4个季节对室内222Rn、220Rn浓度进行测量.结果 室内222Rn浓度随季节变化而变化,不同种类房屋变化规律不同.普通砖房、土砖房及箍窑建筑室内222Rn浓度秋冬季高,夏季低,其中,冬季为55.3～90.3 Bq/m3,春季为36.4～65.7 Bq/m3,夏季为35.6～63.9 Bq/m3,秋季为60.7～87.2 Bq/m3.明窑、半明半暗窑、地坑窑室内222Rn浓度夏秋季高,冬春季较低,冬季为139～184 Bq/m3,春季为135～199 Bq/m3,夏季为179～252 Bq/m3,秋季为172～242 Bq/m3.6类房屋中室内220Rn的季节变化规律较为一致,呈现出冬春季较低,秋季最高的趋势,冬季为43.4～64.3 Bq/m3,春季为60.6～537 Bq/m3,夏季为77.7～792 Bq/m3,秋季为63.2～1077 Bq/m3.结论 室内222Rn和220Rn浓度随季节变化而变化,不同类型的房屋有着不同的变化规律.
目的 研究我國傳統住房室內222Rn、220Rn隨季節變化的規律.方法 選擇甘肅省隴東地區5種不同類型的傳統建築44間及普通磚瓦房5間.採用LD-P型222Rn-220Rn分辨纍積探測器,按鼕、春、夏、鞦4箇季節對室內222Rn、220Rn濃度進行測量.結果 室內222Rn濃度隨季節變化而變化,不同種類房屋變化規律不同.普通磚房、土磚房及箍窯建築室內222Rn濃度鞦鼕季高,夏季低,其中,鼕季為55.3～90.3 Bq/m3,春季為36.4～65.7 Bq/m3,夏季為35.6～63.9 Bq/m3,鞦季為60.7～87.2 Bq/m3.明窯、半明半暗窯、地坑窯室內222Rn濃度夏鞦季高,鼕春季較低,鼕季為139～184 Bq/m3,春季為135～199 Bq/m3,夏季為179～252 Bq/m3,鞦季為172～242 Bq/m3.6類房屋中室內220Rn的季節變化規律較為一緻,呈現齣鼕春季較低,鞦季最高的趨勢,鼕季為43.4～64.3 Bq/m3,春季為60.6～537 Bq/m3,夏季為77.7～792 Bq/m3,鞦季為63.2～1077 Bq/m3.結論 室內222Rn和220Rn濃度隨季節變化而變化,不同類型的房屋有著不同的變化規律.
목적 연구아국전통주방실내222Rn、220Rn수계절변화적규률.방법 선택감숙성롱동지구5충불동류형적전통건축44간급보통전와방5간.채용LD-P형222Rn-220Rn분변루적탐측기,안동、춘、하、추4개계절대실내222Rn、220Rn농도진행측량.결과 실내222Rn농도수계절변화이변화,불동충류방옥변화규률불동.보통전방、토전방급고요건축실내222Rn농도추동계고,하계저,기중,동계위55.3～90.3 Bq/m3,춘계위36.4～65.7 Bq/m3,하계위35.6～63.9 Bq/m3,추계위60.7～87.2 Bq/m3.명요、반명반암요、지갱요실내222Rn농도하추계고,동춘계교저,동계위139～184 Bq/m3,춘계위135～199 Bq/m3,하계위179～252 Bq/m3,추계위172～242 Bq/m3.6류방옥중실내220Rn적계절변화규률교위일치,정현출동춘계교저,추계최고적추세,동계위43.4～64.3 Bq/m3,춘계위60.6～537 Bq/m3,하계위77.7～792 Bq/m3,추계위63.2～1077 Bq/m3.결론 실내222Rn화220Rn농도수계절변화이변화,불동류형적방옥유착불동적변화규률.
Objective To study the seasonal variation of indoor 222Rn and 220Rn concentrations in Longdong district,Gansu Province.Methods A total of 44 houses from 5 different types of raw soil architectures and 5 ordinary brick houses from a typical area were selected in Longdong district,Gansu Province in China.The LD-P discriminative 222Rn and 220Rn detectors were used to measure the indoor concentrations of 222Rn and 220Rn during four seasons in one year.Results The indoor concentrations of 222Rn showed a significant seasonal variation,which varied with different types of houses.222Rn concentrations of ordinary brick houses,soil brick houses and the cave dwellings were higher in winter and autumn and lower in summer.The average concentrations of 222Rn were 55.3-90.3 Bq/m3 in winter,36.4-65.7 Bq/m3 in spring,35.6-63.9 Bq/m3 in summer,and 60.7-87.2 Bq/m3 in autumn.For cave dwellings,open-cut cave dwellings and the underground cave dwellings,222Rn concentrations were higher in summer and autumn,and lower in winter and spring.The average concentrations of 222Rn ranged from 139-184 Bq/m3 in winter,135-199 Bq/m3 in spring,179-252 Bq/m3 in summer,172-242 Bq/m3 in autumn.The seasonal variation of indoor 220Rn was basically consistent in six types of houses,and lower in winter and spring and highest in autumn.The average concentrations of 220Rn ranged from 43.4-64.3 Bq/m3 in winter,60.6-537 Bq/m3 in spring,77.7-792 Bq/m3 in summer,63.2-1077 Bq/m3 in autumn.The indoor concentrations of 222Rn and 220Rn were different among different types of houses,and they were generally higher in type of raw soft architectures than in that of ordinary brick houses.Conclusions 222Rn concentrations indoors showed a significant seasonal variation and varied with different types of houses.
