| 福建牛头山火山口岩石中的放射性核素 |
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| 关键词:radionuclide volcanic rock γspectrum analysis Niutou Hill |
| 基金项目:国家自然科学基金项目（编号：40036010）资助 |
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| Radionuclides in Volcanic Rocks from the Niutou Hill, Fujian Province |
| The natural radionuclides in volcanic rocks from the Niutou Hill, Fujian Province, were measured by HPGe-γ spectroscopy. The samples include granite and basalt. The contents of 238U、210Pb、228Th、228Ra and 40K，in all samples are 1.6～94.7、LD～30.5 Bq/kg、LD～26.6 Bq/kg、3.3～106 Bq/kg、4.9～113 Bq/kg and 28～1267 Bq/kg respectively, and the mean values are 13.5 Bq/kg、5.5 Bq/kg、8.9 Bq/kg、13.0 Bq/kg、16.1 Bq/kg and 293 Bq/kg. There are two groups of basalt samples that have different radionuclide values. The average contents of the six nuclides in the first group of basalt samples are 21.0 Bq/kg、14.8 Bq/kg、14.7 Bq/kg、26.0 Bq/kg、29.8 Bq/kg and 749 Bq/kg, those in the second group of basalt samples are 7.0 Bq/kg、2.0 Bq/kg、6.0 Bq/kg、4.9 Bq/kg、7.7 Bq/kg and 142 Bq/kg, and those in granite are 57.7 Bq/kg、19.0 Bq/kg、21.7 Bq/kg、67.4 Bq/kg and 894 Bq/kg. The content level of 6 radinuchlides in samples is in order of granite rocks＞the first group of basalt rocks ＞the second group of basal rocks. |
| ZHOU Peng,XU Maoquan,LIU Guangshan.2005.Radionuclides in Volcanic Rocks from the Niutou Hill, Fujian Province[J].Acta Geoscientica Sinica,26(z1):224-227. |
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