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阻抑孔雀石绿褪色光度法测定痕量钌的研究赵霞1,郭洁1,杨志毅1,耿世洲1(1.云南省大理白族自治州大理学院生命科学与化学学院)摘 要:在硫酸介质和热水浴中,钌(对高碘酸钾氧化孔雀石绿的褪色反应有很强的抑制作用,据此建立了测定痕量钌(新的动力学光度分析方法.钌在0.003 6~0.022μg/mL范围内与阻抑反应和非阻抑反应的吸光度差值ΔA有良好的线性关系,线性方程为:ΔA=0.070 1+0.010 63ρ(μg/mL),方法的检出限为1.08×10-9 g/mL,对0.012μg/mL钌(平行测定11次的标准......
-potassium igneous rock by potassium-solubilizing culture and change of bacterial community structure during leaching process SUN Desi, ZHANG Xianzhen, XIAO Guoguang (School of Chemistry and Environmental... mucilaginosus BMN, Bacillus circulans BCM and Rhizobium spp. HJ07) of rich-potassium igneous rock were investigated by using two bioleaching technologies of flask leaching and continuous leaching......
岩 中图分类号:TD925.5；Q939.97 文献标志码:A 文章编号:1672-7207(2014)10-3329-10 Breeding of potassium-dissolved Fungi by protoplastmutagenesis and bioleaching potassium-rich shale TANG Xiaopang1, 2, CHEN Ye1, CAO Fei1, 2, SUN Desi1 (1. School of Chemistry and Environmental Engineering, Jiujiang University......
三氯化钛还原-高锰酸钾无汞滴定法测定铁矿石中全铁量 赵树宝1 (1.安徽省庐江县龙桥矿业有限公司,安徽庐江,231551) 摘要:用HNO_3-HF处理,硫-磷混酸溶解试样,在盐酸介质中,用二氯化锡-三氯化钛将Fe~(3+)还原为Fe~(2+),以二苯胺磺酸钠为指示剂,以高锰酸钾标准溶液滴定铁矿石中的全铁量.试验并确定了测定过程中的各种最佳分析条件.方法用于分析铁矿石中全铁含量,其相对标准偏差在0.28%~1.0%之间,结果与认定值相符.该方法避免了二氯化汞-重铬酸钾滴定法中汞和铬对环境的二次污染. 关键词:高锰酸钾无汞滴定法; 铁矿石; 全铁; mercury-free titration with potassium permanganate; iron ore; total iron; [全文内容正在添加中] ......
,晶体结构; X-ray diffraction; calcium potassium sodium phosphate; crystal structure; [全文内容正在添加中] ......
水-正丙醇-硫酸铵体系析相萃取分离钯的研究沈久明1,司学芝1,李想1,马万山1(1.河南省信阳市信阳师范学院化学化工学院)摘 要:研究了水-正丙醇析相萃取Pd(Ⅱ)的行为及Pd(Ⅱ)与一些金属离子分离的条件.结果表明,硫酸铵能使正丙醇的水溶液分成两相,在分相过程中,Pd(Ⅱ)与溴化钾生成的PdBr42-与质子化正丙醇(C3H7OH2+)形成缔合物[PdBr42-][C3H7OH2+]2能被正丙醇相完全萃取.当溶液中正丙醇的体积分数,溴化钾浓度和硫酸铵的质量浓度分别为30%,7.0×10-3 mol/L,0.2 ......
of potassium hexatitanate whisker XU Wan-zhen1, WANG Ling-ling2, LI Chun-xiang1, 2, JING Jun-jie2, YAN Yong-sheng1, 2 (1. School of Environment, Jiangsu University, Zhenjiang 212013, China; 2. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China) Abstract: The potassium hexatitanate whisker was used as solid-phase extractant and inductively coupled plasma......
to 37.26 m2/g after transesterification of soybean oil and methanol in the ultrasound field. Key words: ultrasonic; potassium fluorin/γ-alumina catalyst; transesterification; biodiesel; soybean oil 生物柴油... al. Organic reaction of the alumina coated with potassium fluoride[J]. Journal of Hebei University: Natural Science Edition, 2004, 24(1): 91-98. [11] XIE Wen-lei, LI Hai-tao. Alumina-supported......
of lithium salt and potassium salt on prebaked cell production[J]. Journal of Materials and Metallurgy, 2010, 9(s1): 148-149. [7] 程保生. 铝电解质体系中锂盐含量对技术参数的影响[J]. 甘肃冶金, 2012, 34(5): 24-26. CHENG Bao-sheng...] SOLHEIM A, STOEN L, KVELLO J. Cryoscopic data for Hall-Héroult bath containing magnesium fluoride, calcium fluoride, potassium cryolite, and sodium chloride[C]//SUAREZ C E. Light Metals 2012. Orlando, FL......
341000, China; 2. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China) Abstract: The effects of collector potassium amyl xanthale (PAX) and depressant... not be adsorbed on the chlorite surface. Key words: chlorite; pyrite; potassium amyl xanthale; flotation separation; carboxy methyl cellulose; competitive adsorption 硫化镍矿是我国金属镍资源的主要来源.然而我国硫化镍矿资源中存在大量的低品位硫化镍矿,矿......
