作者把氟化锂(镁、钛)用作环境剂量计对野外固定点连续监测30个月,结果表明每个月的测量值是有变化的,一般波动在7. 2～9.7毫伦范围内。监测点的平均照射量率为11.4微伦/小时,年平均照射量值约为100.1毫伦。若广州地区的外环境本底辐射较均匀,即该值基本 The authors use lithium fluoride (magnesium, titanium) as an environmental dosimeter for continuous monitoring of field fixed points for 30 months, the results show that the monthly measurement is subject to change, the general fluctuations in the range of 7.2 to 9.7 millimeters . The average exposure rate at the monitoring sites was 11.4 micro-lux / hour with an average annual exposure of 100.1 millilon-meters. If the external environment in Guangzhou radiation more uniform, that is, the value of the basic