http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Hannan Younis,Sumbilah Shafique,Zahida Ehsan,Aleena Ishfaq,Khurram Mehboob,Muhammad Ajaz,Abdullah Hidayat,Wazir Muhammad Korean Nuclear Society 2023 Nuclear Engineering and Technology Vol.55 No.7
The radioactivity concentrations of Naturally Occurring Radioactive Materials (NORM) i.e., <sup>226</sup>Ra, <sup>232</sup>Th, and <sup>4</sup>K in various chemical fertilizers being used in the agricultural soil of Pakistan were determined utilizing gamma spectrometry by employing a High Purity Germanium (HPGe) detector. The radioactivity concentrations of <sup>226</sup>Ra, <sup>232</sup>Th, and <sup>4</sup>K extended from 2.58 ± 0.8-265.7 ± 8.8 Bq kg<sup>-1</sup>, 1.53 ± 0.14-76.6 ± 1.07 Bq kg<sup>-1</sup> and 36.5 ± 1.34-15606.7 ± 30.2 Bq kg<sup>-1</sup> respectively. The radiological hazard parameters such as internal and external indices and annual effective dose rates were calculated, while excessive lifetime cancer risk factors for the indoor and outdoor areas were found in the range from 0.3×10<sup>-3</sup> to 10.723×10<sup>-3</sup> and 0.03×10<sup>-3</sup> to 2.7948×10<sup>-3</sup> of most fertilizers, however, some values were slightly higher than the UNSCEAR (The United Nations Scientific Committee on the Effects of Atomic Radiation) recommended values for potash-containing fertilizers such as MOP (Muriate of Potash).