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J. Cent. South Univ. (2016) 23: 2754-2762 DOI: 10.1007/s11771-016-3337-0 Effect of melt spinning on gaseous hydrogen storage characteristics of nanocrystalline and amorphous Nd-added Mg2Ni-type alloys ZHANG Yang-huan(张羊换)1, 2, YUAN Ze-ming(袁泽明)2, YANG Tai(杨泰)2, QI Yan(祁焱)2,GUO Shi-hai(郭世海)2, ZHAO Dong-liang(赵栋梁)2 1. Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources......
. The absorption processes of Cr(Ⅵ) and Pb(Ⅱ) on both free and immobilized cells are apparently affected by pH and the initial concentration of metal ions in the bulk solution, but are much weakly affected... period for harvesting the cells. Though GARDEA- TORRESDEY et a[15] have studied Synechococcus as biosorbents for removal of metal ions, no comparative study on biosorption mechanisms of Cr(Ⅵ) and Pb......
of genetic classification by ore lead isotopes[50] 本实验中将测得的铅同位素数据与邻区的Adi Nefas 矿床,比萨(Bisha)VMS型矿床,连同位于沙特阿拉伯的新元古代VMS型矿床以及其他泛非运动时期位于纳米比亚和赞比亚的容矿围岩为新元古代的块状硫化物矿床的Pb同位素特征进行比较.如图10所示,Emba Derho和Debarwa矿床中样品的... by Raman spectroscopy and its application[J]. Earth Science Frontiers, 2009, 16(1): 1-5. [45] 王立强, 顾雪祥, 程文斌, 唐菊兴, 钟康惠, 刘晓吉. 西藏蒙亚阿铅锌矿床 S,Pb 同位素组成及对成矿物质来源的示踪[J]. 现代地质, 2010, 24(1): 52-58. WANG Li-qiang, GU......
陕西马元铅锌矿S,Pb同位素地球化学特征及成矿物质来源探讨王海1,2,王京彬2,祝新友2,程细音2,蒋斌斌21. 昆明理工大学2. 北京矿产地质研究院摘 要:马元铅锌矿床位于扬子板块北缘碑坝穹窿构造的南缘,是区域上重要的碳酸岩型铅锌矿,矿体赋存于震旦系灯影组白云岩中.通过对马元铅锌矿床中矿石矿物闪锌矿,方铅矿...%38.35%,组成较为均一,Pb主要来自于壳幔混合的造山带,基底岩系可能是马元铅锌矿床成矿物质的重要来源.关键词:马元铅锌矿;硫铅同位素;地球化学特征;成矿物质来源;陕西;......
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Trans. Nonferrous Met. Soc. China 30(2020) 1574-1581 Effects of rare earth Ce addition on microstructure and mechanical properties of impure copper containing Pb Hai-hong LI1, Xiao LIU1, Yang LI1, Shi-hong ZHANG2, Yan CHEN2, Song-wei WANG2, Jin-song LIU2, Jin-hu WU3 1. College of Nuclear Equipment and Nuclear Engineering, Yantai University, Yantai 264005, China; 2. Institute of Metal Research......
某铅锌矿区矿渣重金属Pb和Zn浸出影响分析罗乐,周皓重庆工程职业技术学院摘 要:以三峡库区某废弃铅锌矿区矿渣为研究对象,采用优化的连续化学提取(SCE)-微波消解-ICP-MS法分析了矿渣中Pb和Zn的水溶态,弱酸态,还原态,氧化态及残渣态的分布特性,研究了不同pH值与反应时间对重金属Pb和Zn浸出的影响,分...括Pb和Zn在内的重金属浸出和迁移,造成严重的二次污染.关键词:pH值;铅锌矿渣;重金属;浸出;......
某铅锌矿区矿渣重金属Pb和Zn浸出影响分析罗乐,周皓重庆工程职业技术学院摘 要:以三峡库区某废弃铅锌矿区矿渣为研究对象,采用优化的连续化学提取(SCE)-微波消解-ICP-MS法分析了矿渣中Pb和Zn的水溶态,弱酸态,还原态,氧化态及残渣态的分布特性,研究了不同pH值与反应时间对重金属Pb和Zn浸出的影响,分...括Pb和Zn在内的重金属浸出和迁移,造成严重的二次污染.关键词:pH值;铅锌矿渣;重金属;浸出;......
:A Crystallization and electrochemical corrosion behaviors of amorphous Fe-based alloys in NaCl solution LI Xiang, YAN Biao, DONG Peng, WANG Yu-xin, DU Chun-feng (Shanghai Key Lab of Metal...NaOH中的腐蚀行为[J]. 稀有金属材料与工程, 2003, 30: 814?817.WANG Cheng, ZHANG Qing-sheng, JIANG Feng. Corrosion behavior of Zr55Al10Cu30Ni5 amorphous alloy in NaOH solution[J]. Rare Metal Materials and Engineering......
velocities were described by the release kinetic formulas of Cd and Pb, which improved the concentration equation of heavy metal pollutants diffusion in aquatic environment. 2.1 Materials preparation... in the rapid release section gradually increase, and the heavy metal content in the overlying water body increases at dynamic equilibrium. The release processes of Cd and Pb in sediments are well......