| Distribution and mode of occurrences of radionuclides in phosphogypsum from the Aqaba and Eshidiya fertilizer plants, Jordan |
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| 作者姓名： | Mohammad S. Al-Hwaiti Robert A. Zielinski James R. Budahn James F. Ranville Philippe E. Ross |
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| 作者单位： | [1]Jordan Phosphate Mines Company, Amman, Jordan [2]U.S. Geological Survey, Denver, CO 80225, USA [3]Chemistry and Geochemistry Department, Colorado School of Mines, Golden, CO 80401, USA [4]Environmental Sctence and Engineering Division, Colorado School of Mines, Golden, CO 80401, USA |
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| 摘 要： | Phosphogypsum is a waste by-product of the phosphate fertilizer industry that has relatively high concentrations of some U decay-series radionuclides such as ^226Ra and ^210Pb. The distribution and environmental mobility of radionuclides in phosphogypsum are an important concern because this gypsum by-product is used for wallboard, in agriculture and as a soil amendment. This study determined the distribution of ^226Ra, ^210Pb, within phosphogypsum stacks of varying age and among three size fractions （coarse： 〈0.212 mm; medium： 0.212-0.053 mm; fine： 〈0.053 mm）, in phosphogypsum derived from Aqaba and Eshidiya fertilizer plants. The results indicated that ^226Ra and ^210Pb were generally uniformly distributed in phosphogypsum stacks and showed no significant difference in the concentration of these elements with the age of stack. In the Aqaba phosphogypsum ^226Ra was slightly 10% enriched in the coarse fraction, while ^210Pb was 10% enriched in the free size fraction. In the Eshidiya phosphogypsum ^226Ra and ^210Pb contents were both relatively enriched （10%） in the fine size fraction.
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| 关 键 词： | 放射性核素 磷石膏 磷肥工业 废物处理 |
Distribution and mode of occurrences of radionuclides in phosphogypsum from the Aqaba and Eshidiya fertilizer plants, Jordan |
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| Mohammad S. Al-Hwaiti Robert A. Zielinski James R. Budahn James F. Ranville Philippe E. Ross.Distribution and mode of occurrences of radionuclides in phosphogypsum from the Aqaba and Eshidiya fertilizer plants, Jordan[J].Chinese Journal of Geochemistry,2006,25(B08):178-178. |
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| Abstract: | |
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| Keywords: | by-product ^226Ra ^210Pb phosphogypsum distribution |
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