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Efficient extraction and stripping of Nd(Ⅲ),Eu(Ⅲ) and Er(Ⅲ) by membrane dispersion micro-extractorsZhuo Chen,Jianhong Xu,Funing Sang,Yundong WangThe State Key Laboratory of Chemical Engineering... efficiency significantly. When the REEs solution has an initial pH of 4.00, the flow rates of continuous and dispersed phase are 40 and 1.6 mL/min,respectively, and 90 mg/L Nd(Ⅲ), Eu(Ⅲ) and Er(Ⅲ) is extracted......
多壁碳纳米管修饰电极阳极溶出伏安法测定痕量银明亮1,2,习霞2(1.江苏省南通市 南通大学杏林学院2.江苏省南通市 南通大学化学化工学院)摘 要:利用多壁碳纳米管修饰玻碳电极,通过优化支持电解质及pH值,修饰剂用量,富集电位及时间等测定条件,建立了测定痕量银的线性扫描阳极溶出伏安分析法.在pH 4.0的NaAc-HAc缓冲液中,-0.10 V电位下富集5 min后,于0.46 V处出现一灵敏度高,峰形较好的银阳极溶出峰,溶出峰电流与Ag+浓度在3.0×10-8~5.0×10-5 mol/L的范围呈良好的线性关系......
) Under the same conditions the extraction ratio of zinc reaches 75% using saponified D2EHPA as an extractant. Zinc ion can be separated from ferric ion using 196 g/L sulfuric acid solution as stripping...J. Cent. South Univ. Technol. (2010) 17: 760-764 DOI: 10.1007/s11771-010-0553-x Solvent extraction of zinc from zinc sulfate solution LONG Huai-zhong(龙怀中)1, CHAI Li-yuan(柴立元)1, QIN Wen-qing(覃文庆)2......
羧基化石墨烯修饰玻碳电极测定水样中的痕量铅和镉许春萱1,吴志伟1,曹凤枝1,高滢滢1(1.河南省信阳市信阳师范学院化学化工学院)摘 要:石墨烯纳米片通过酸处理制备羧基化纳米石墨烯,将羧基化石墨烯修饰在玻碳电极表面制得石墨烯修饰玻碳电极,以此电极作工作电极,建立了微分脉冲溶出伏安法同时测定痕量铅和镉的电化学分析法.在0.1 mol/L pH 4.5的NaAc-HAc缓冲液中,在-1.2 V富集400 s后,溶出峰电流分别与Cd2+和Pb2+的浓度在2×10-9~2×10-7 mol/L的范围内呈良好的线性关系,检......
壳聚糖-多壁碳纳米管修饰玻碳电极差分脉冲溶出伏安法测定痕量钯(Ⅱ)齐蕾1,齐同喜2(1.江苏省南京市南京大学化学化工学院2.山东理工大学 化学工程学院,山东淄博 255049)摘 要:将多壁碳纳米管(MWCNT)分散于壳聚糖(CTS)溶液中,修饰在玻碳电极(GCE)表面,制成了壳聚糖-多壁碳纳米管修饰玻碳电极(CTS-MWCNT-GCE).利用差分脉冲溶出伏安法研究了钯(Ⅱ)在该电极上的溶出伏安特性,优化了试验条件,提出了一种测定痕量钯(Ⅱ)的新方法.试验发现,在0.1 mol/L乙酸钠-0.1 mol/L盐酸......
Trans. Nonferrous Met. Soc. China 24(2014) 582-587 On-line detection of Cu (II) in bioleaching system by anodic stripping differential pulse voltammetry Yan JIN1,2,3, Miao CHEN2, Qing-hui JIN1, Jian...: On-line Cu (II) ion concentration detection in bioleaching system was achieved by anodic stripping differential pulse voltammetry (ASDPV). Good linearity between Cu (II) concentration and oxidation peak......
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Space-time principles of reducing stripping in furrow pitsShixiong Zhang, Guozhu Zeng, and Tao PengCollege of Resources and Environment Engineering, Wuhan University of’Technologv, Wuhan 430070... provided theoretical basis for convex slope in furrow pits to reduce stripping. Similar phenomena and examples are supplied simultaneously.关键词:......
, and the stripping of molybdenum with 60 g L-1 ammonium acid carbonate solution is 94.67 % at O/A ratio of 2:1 and contact time of 10 min.关键词:...Solvent extraction of molybdenum from acidic leach solution of Ni–Mo oreMing-Yu Wang,Xue-Wen Wang,Chang-Jun Jiang,Chao-Fan TaoSchool of Metallurgical Science and Engineering, Central South University......
Hydro-chemical conversion of galena in FeCl3-KCl solution LONG Huai-zhong(龙怀中)1, CHAI Li-yuan(柴立元)1, LIU Hui(刘 辉)2, QIN Wen-qing(覃文庆)2 1. School of Metallurgical Science...: The behaviours of complexation and dissolution of PbCl2 on the surface of galena were investigated to explore the process of hydro-chemical conversion of galena (PbS) in chloride media. By means of solution......