摘要
目的 研究建筑陶瓷的放射性水平及其所贡献的有效剂量。方法 采集 91个建筑陶瓷成品 ,用能谱仪测2 3 2 Th ,2 2 6Ra ,40 K含量 ,布放CR - 39氡浓度探测器测室内氡浓度。结果 91个样品中有 1 5个接近国家B类标准 ,用建筑陶瓷装饰的居室室内氡浓度比对照组高 1 5 4 4Bq/m3 (P <0 0 5 )。广东产瓷砖所致居民年有效剂量为最高 ,达 1 0 1mSv/a ,附加年有效剂量为 0 2 4 2mSv/a,约为国家标准限值的 2 4 % ,其余省、市瓷砖所致附加有效剂量小一些。结论 不同地区生产的建筑陶瓷放射性水平相差悬殊 ,有的建筑陶瓷接近B类产品标准 ,用于居室内装修时应谨慎。
Objective To study the radiation levels of the building ceramics and its effective dosage on human being.Methods 91 building ceramics were collected,the contents of radio nuclides 232 Th, 226 Ra,and 40 K were measured.Setting CR 39 devices in the rooms,solid state track detector(SSNT)was used to measure the indoor radon concentration.Results 15 samples kept in line with B type standard.The average indoor radon concentration in ceramics decorated rooms was 15 44 Bq/m 3 more over the undecorated rooms(P<0 05).There is much higher radiation in Guangdong manufactured building ceramics,and the effective dosage is 1 01 mSv/a.The additive effective dosage is 0 242 mSv/a ,equivalent to 24% of the state threshold limit.Conclusions Building ceramics manufactured in different areas are quite different in radiation levels.Some of them keep in line with B type standard.Building ceramics may raise the indoor radon concentration;it must be used carefully during decoration.
出处
《工业卫生与职业病》
CAS
CSCD
北大核心
2004年第2期72-76,共5页
Industrial Health and Occupational Diseases
关键词
建筑陶瓷
放射性水平
氡
Building ceramics
Radiation level
Radon concentration
