Investigation And Evaluation Of Natural Radioactive Eco-Environment In Huangdi Mausoleum And Surrounding Areas

Radiation caused by radionuclide ?,?,? and other radiation is ubiquitous,radiation beyond a certain limit will cause great harm to the human body to serve long-term economic construction and social development,and effectively protect the people Of life safety and health for the purpose?The methods of measuring ground gamma-ray exposure,surface gamma-absorbed dose rate,ground gamma-ray spectrum,soil,rock,water,air radioactivity survey,The data were used to evaluate the effects of natural radioactive materials on the water environment in Huangling County,especially in Juhe River Basin,and the relationship with the local economic and social development and the quality of life of the people.The radiological high background area and the main radiation source area were classified.Radiation protection and Control measures and radiation pollution control programs and recommendations for urban planning,economic,agricultural development and deployment to provide a reliable basis for natural radioactive environmental survey and evaluation information.The following progress has been made:1.It is determined that the ?-radiation of the surface environment is dominated by the normal field distribution.The background value of natural radiation in Huangling County is 85.90 nGy / h,which belongs to normal natural background.2.The distribution of radionuclide uranium,thorium and potassium in the soil and rock of Huangdi Mausoleum and its surrounding areas were determined as the normal background.The measurement results of ground gamma-ray spectrum of county and town are normal.The content of thorium and potassium in Huangdi Mausoleum is high,which is related to the use of granite in pavement and square,and still less than the standard limit.3.The radionuclide concentrations in surface water and civil water sources in the area were all at low to normal concentrations.4.The natural radioactivity levels of nuclides in the area belong to the normal background level.5.The radon concentration in environmental air of the townships and cultural relics in Huangling area is at the middle level of the whole country.The overall distribution is higher in the hilly area of Liangmao and slightly lower on the plateau,and the overall change is not significant.6.The annual effective dose equivalent per capita of the residents in the survey area is 0.69 mSv,which is lower than the average level in Shaanxi Province,which is higher than the world average,but it is normal.7.The establishment of the Yellow Emperor Mausoleum and the surrounding areas of natural radioactive eco-environmental information system.