云浮硫鐵礦開采對周邊表土稀土元素影響研究
[Abstract]:The rare earth element (REEs), as a tracer of the geochemical behavior of trace elements, can effectively reflect the change of soil environment. In order to evaluate the influence of the content of the surface soil REEs and the spatial distribution during the exploitation and utilization of the Yunfu Pyrite, the content of 16 rare-earth elements from 57 top soil and 2 dust samples from the periphery of the Yunfu Pyrite Mine was determined by the method of acid-dissolving, and the content of the rare-earth elements of the two dust samples was measured by ICP-MS. The influence factors of the possible sources and spatial distribution of the space distribution are discussed by Kriging's space difference and factor analysis. The results show that the acid wastewater and dust produced during the exploitation of pyrite are the main factors that affect the distribution of the rare earth elements in the surface of the mining area. The spatial distribution of the light rare earth element and the heavy rare earth element Gd is similar to that of the heavy rare earth element Gd, which is mainly affected by the dust in the mining area, and the heavy rare earth element (Gd) has a similar spatial distribution law, which may be influenced by the acid waste water from the tail mining area. The negative anomaly of Eu * and the positive anomaly of Ce * are mainly affected by the oxidation condition of the humid heat in South China, but the soil acidification caused by mining is also an important influence factor of the positive anomaly of Ce *; therefore, the rare earth element has an important indication for the change of soil environment in the periphery of the pyrite mining area, And can provide guidance for remediation of contaminated soil.
【作者單位】: 中國科學(xué)院廣州地球化學(xué)研究所邊緣海地質(zhì)重點實驗室;中國科學(xué)院大學(xué);
【基金】:國家自然科學(xué)基金委員會-廣東聯(lián)合基金項目(U1201131) 廣東省-中國科學(xué)院戰(zhàn)略合作項目(2012B090400045)
【分類號】:X753
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