| By means of radioactive chemical analysis and FT-620 environmental γ-radiation dosimeter, natural radionuclides in rocks of the earth's crust series, mines, soil and water were investigated in Liangshan region. Moreover, the indoor and outdoor γ-radiation doses in air and cosmic ray were also detected. On these basis, the background levels of natural radiation in the environment and their distribution have been investigated, the radiative doses absorbed by local residents evaluated, and the mutual relationship discussed. |
