为了解我站管辖 (八县一区 )范围的民用住宅建材含γ射线放射卫生水平 ,我们于 1996～ 1998年 ,对部分厂家及销售门市的 9种主要建筑材料成品进行了放射卫生监测。1　方法与评价标准1.1　方法　用 FD- 71γ辐射仪测定前作了校对刻度。在离周围建筑物 2 0 m外的空旷地上 ,仪器探 In order to understand the radioactive sanitation level of γ-ray radiation of civil residential building materials within the jurisdiction of our station (eight counties and one district), we conducted the radiosurgery survey on the finished products of 9 main building materials of some manufacturers and sales outlets from 1996 to 1998. A method and evaluation criteria 1.1 method with FD-71 gamma radiometer measured before made a proofreading scale. Instruments in the open area 20 meters away from the surrounding buildings