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simultaneously in the pH range of -2 to 5.61. The results showed that both hydrogen peroxide and sucrose were effective reductants which could intensify the simultaneous leaching of Mn and Zn into leachate as well as enrich Pb and Ag in the residue. 95.88% of Mn and 99.23% of Zn were extracted when the compound ore was leached with hydrogen peroxide in sulfuric acid media, meanwhile the contents of Pb......
2,7-双(5-羧基-1,3,4-三氮唑偶氮)-H酸和过氧化氢催化动力学光度法测定痕量铜(Ⅱ)的研究葛昌华1,潘富友1,梁华定1,林彩飞1(1.浙江省台州市台州学院医药化工学院)摘 要:研究了铜(Ⅱ)催化H2O2氧化2,7-双(5-羧基-1,3,4-三氮唑偶氮)-H酸(BCTZAHA)褪色反应及其动力学条件,并基于褪色反应程度与铜(Ⅱ)量在一定范围内呈线性关系,建立了测定痕量铜(Ⅱ)的催化动力学光度法.在pH 10.0的NH3·H2O-NH4Cl缓冲溶液介质中,褪色体系的最大吸收波长为540 nm,铜(Ⅱ)质量......
×10~(-7)~3.0×10~(-5)mol/L,检出限为1.2×10~(-8)mol/L.该方法可用于测定雨水及消毒水中H_20_2的含量,结果与荧光法测定结果一致. 关键词:血红蛋白; 催化光度法; 过氧化氢; hemoglobin; catalytic spectrophotometry; hydrogen peroxide; [全文内容正在添加中] ......
exhibits a pseudo-first-order kinetics pattern. The effect of initial mass concentration of reactant, adding dosage of hydrogen peroxide, pH of reaction solution, UV light intensity as well as different... hydrogen peroxide oxidation of paracetamol is faster; the anions have different effects on the degradation of APAP by UV/H2O2, the degradation rate constant of four anions affecting paracetamol......
.溶液pH=3时,两者去除率最大.紫外-可见吸收光谱显示,处理后的Cu(Ⅱ)-EDTA被降解为小分子有机物.通过对比电气石反应前后的XRD图谱和红外光谱发现,电气石与EDTA降解中间产物发生络合.反应动力学研究结果表明,电气石/H_2O_2体系降解废水的反应为拟一级反应. 关键词:电气石; Cu(Ⅱ)-EDTA废水; 羟基自由基; 过氧化氢; Tourmaline; hydrogen peroxide; hydroxyl radical; chelated Cu(Ⅱ)-EDTA wastewater; [全文内容正在添加中] ......
C, FRANK E O. Niobate nanosheets as catalysts for photochemical water splitting into hydrogen and hydrogen peroxide [J]. Journal of Physics Chemistry C, 2009, 113(1): 479-485. [7] BEATA Z, EWA B P... temperature is 900 ?C. Key words: CuO/ZrO2; photocatalytic activity; hydrogen evolution; simulated sunlight 1 Introduction Because of the prominent advantages, such as clean, renewable......
(Ⅱ)-H2O2 for methyl orange is high, i.e. methyl orange can be completely degraded within 5 min. Key words: catalytic oxidation; methyl orange; copper; ferrous; hydrogen peroxide; constant of reaction rate..., YANG Run-chang. Wet hydrogen peroxide oxidation of high concentration methyl orange and its mechanism[J]. Environment Engineering, 2002, 20(2): 22-24. [3] 陈传好, 谢 波. Fenton试剂处理废水中各因子的作用机制[J]. 环境科学......
时,其氢脆敏感性将有所提高. 关键词:热浸镀锌层;氢渗透;大气腐蚀;氢脆 中图分类号:TG 174.41 文献标识码:A Effect of humidity on hydrogen embrittlement susceptivity of hot-dip galvanized steel exposed... 100039, China) Abstract: The hydrogen permeation and embrittlement behavior of hot-dip galvanized steels exposed to stimulated marine atmospheric environments with different relative humidities(RH......
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; 文献标志码:A Decomposition of synthetic scheelite in HCl solution with hydrogen peroxide as complexing agent WANG Xiao-bo, LI Jiang-tao, ZHANG Wen-juan, HE...) in hydrochloric acid solution using hydrogen peroxide (H2O2) as complexing agent. H2O2 as a chelating agent, can readily react with H2WO4 to form water-soluble peroxotungstic acid H4[WO3(O2)2......