广东温泉水-汽转化过程对室内氡浓度的影响

研究了广东省四家温泉宾馆室内温泉水及其使用过程中对氡浓度的影响。利用RAD-7测氡仪和NR667A测氡义连续测量室内外氡浓度和水氡浓度，发现室内氡浓度受地基土壤、建筑物类型、利用方式(是否洗浴、洗浴时间长短等)、通风状况等诸多因素的影响。无人入住时宾馆室内氡浓度的变化说明土壤氡的渗入是底层房间室内氡的重要影响因素。当在浴室内使用温泉水洗浴时，浴室内平均氡浓度比没有用温泉水时高出1～8．3倍，客房内氡浓度比没有用温泉水洗浴时高出1．2～8．3倍。在使用温泉水时，某些宾馆室内氡浓度超标，可能对宾馆工作人员造成潜在的健康危害，应采取管理措施或技术手段降低其暴露水平。

The Influence Factors on the Variation of Indoor Radon Levels in the Water - Vapor Transitional Process of Hot Springs in Guangdong Province

The hot spring waters in four hot spring hotels in Guangdong, China and their influence on the variation of indoor ra don levels were studied. Radon concentrations in hot spring water, inside bath room and outside bath room were measured by using RAD7 and NR-667A radon detectors. The results indicate that variation of indoor radon levels were influenced by many factors such as soil, building types, usage of hot spring water (bathing or not, bathing time long or short), and ventilation conditions. The variation of radon levels in closed unoccupied hotel rooms indicates that the soil Radon has very important influence on the indoor radon levels of the basement or ground floor of hotel rooms. For the bathrooms with spring water bathing activities, their average radon levels were 1-8. 3 times higher than those of the bathrooms without spring water bathing activities. Meanwhile, the average radon levels of bedrooms connected with bathrooms with spring water bathing activities were 1-8. 3 times higher than those of the bedrooms connected with bathrooms without spring water bathing activities. The indoor radon concentrations in some hotel rooms are much higher than the relevant standard. This could potential damage the health of hotel staffs. Therefore, some technical and management measures should be taken to decrease the radon inhalation exposure of those hotel staffs.