Determination of trace elements in Wuxi fallen ice by INAA |
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| Authors: | X Y Mao C F Chai S L Ma Z Z Yang D Y Xu Y Y Sun Q W Zhang |
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| Institution: | (1) Institute of High Energy Physics, Academia Sinica, P.O. Box 2732, Beijing, (China);(2) Beijing Astronomical Observatory, Academia Sinica, (China);(3) Institute of Geology, National Seismology Bureau, (China);(4) Institute of Geology, Academia Sinica, Beijing, (China);(5) Institute of Geology, Ministry of Geology and Minerals, Beijing, (China) |
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| Abstract: | The concentrations of 14 elements, including Ir, Au, Co, Cr, Fe, Sr, Rb, K, Ta, Zn, Sb, Ba, Sc and Se, in the Wuxi fallen ice were determined by neutron activation analysis. The experimental results show that the relative concentration ratios of Ir/Co, Ir/Cr and Ir/Sc etc. in the ice water (0.0069, 0.00024 and 0.11, respectively) are quite close to those of Type C1 chondrite (0.0102, 0.00021 and 0.092, respectively), which implies that the fallen ice might be a piece of extraterrestrial substance. |
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