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铀矿井、某些非铀矿井和室内外的氡监测以及铀尾矿堆和建筑材料氡析出率的测量,是职业和环境辐射卫生评价的重要内容。利用驻极体在被动采样小室内产生收集氡子体的静电场,极大地提高了氡监测的灵敏度,测氡暴露量的探测下限为6.4Bq/m~3·h~(-1),采样周期为2d时,测氡浓度的探测下限为0.13Bq/m~3,采样周期为1h时测氡析出率的探测下限为0.55mBq/m~2·s。
Uranium mines, some non-uranium mines and indoor and outdoor monitoring of radon, as well as the measurement of radon exhalation rates of uranium tailings heaps and building materials are important components of occupational and environmental radiation health assessments. The use of electrets in the passive sampling chamber to generate radionuclides generated electrostatic field, which greatly improved the sensitivity of radon monitoring, detection of radon exposure detection limit of 6.4Bq / m ~ 3 · h ~ (-1), sampling The detection limit of radon concentration is 0.13Bq / m ~ 3 when the period is 2d, and 0.55mBq / m ~ 2 · s when the sampling period is 1h.