The activity levels of long-lived radionuclides in minerals have received more and more concern for the public health. The inductively coupled plasma mass spectrometry was used to measure the content of uranium and th...The activity levels of long-lived radionuclides in minerals have received more and more concern for the public health. The inductively coupled plasma mass spectrometry was used to measure the content of uranium and thorium in 60 mineral samples collected from 16 mines of seven provinces in China. The contents of uranium and thorium ranged0.17 ± 0.04 lg g^(-1)to 15.3 ± 2.39 lg g^(-1), and 0.19 ± 0.04 lg g^(-1)to 19.6 ± 7.56 lg g^(-1), respectively. The highest levels of U and Th contents were found in aluminum ore,whereas the lowest was found in antimony and copper ores.展开更多
基金financial support by the Chinese Ministry of Science and Technology (Grant Nos. 2005DIB1J087, 2013BAK03B00)
文摘The activity levels of long-lived radionuclides in minerals have received more and more concern for the public health. The inductively coupled plasma mass spectrometry was used to measure the content of uranium and thorium in 60 mineral samples collected from 16 mines of seven provinces in China. The contents of uranium and thorium ranged0.17 ± 0.04 lg g^(-1)to 15.3 ± 2.39 lg g^(-1), and 0.19 ± 0.04 lg g^(-1)to 19.6 ± 7.56 lg g^(-1), respectively. The highest levels of U and Th contents were found in aluminum ore,whereas the lowest was found in antimony and copper ores.
