Omar M, Hassan A, Sulaiman I
Malaysian Institute for Nuclear Technology Research, Bangi, 43000 Kajang, Selangor DE, Malaysia.
Radiat Prot Dosimetry. 2006;121(4):456-60. doi: 10.1093/rpd/ncl060. Epub 2006 May 15.
Absorbed dose rates in vehicles during travelling by different modes of transport in Malaysia were measured. Radiation levels measured on roads in Peninsular Malaysia were within a broad range, i.e. between 36 and 1560 nGy h(-1). The highest reading, recorded while travelling near monazite and zircon mineral dumps, was 13 times the mean environmental radiation level of Malaysia. It is evident that radioactive material dumps on the roadsides can influence the radiation level on the road. The absorbed dose rates measured while travelling on an ordinary train were between 60 and 350 nGy h(-1). The highest reading was measured when the train passed a tunnel built through a granite rock hill. The measurement during sea travelling by ferries gave the lowest radiation level owing to merely cosmic radiation at the sea level.
对马来西亚不同交通方式出行时车辆内的吸收剂量率进行了测量。在马来西亚半岛道路上测量的辐射水平范围很广，即36至1560纳戈瑞每小时（nGy h(-1)）。在独居石和锆石矿渣堆附近行驶时记录到的最高读数，是马来西亚平均环境辐射水平的13倍。显然，路边的放射性物质堆放会影响道路上的辐射水平。在普通火车上行驶时测量的吸收剂量率在60至350纳戈瑞每小时（nGy h(-1)）之间。最高读数是在火车穿过一座花岗岩山丘修建的隧道时测得的。乘坐渡轮海上航行期间的测量结果显示辐射水平最低，这是因为海平面处仅有宇宙辐射。
