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铁(Ⅲ)

铁(Ⅲ)的相关文献在1985年到2023年内共计77383篇,主要集中在化学、化学工业、轻工业、手工业 等领域,其中期刊论文171篇、会议论文2篇、专利文献77210篇;相关期刊95种,包括长春师范学院学报(人文社会科学版)、南通职业大学学报、南昌大学学报(理科版)等; 相关会议2种,包括第五届微量元素研究与进展学术交流会、中国表面工程协会电镀分会第五届年会等;铁(Ⅲ)的相关文献由50000位作者贡献,包括不公告发明人、李杰、张健等。

铁(Ⅲ)—发文量

期刊论文>

论文:171 占比:0.22%

会议论文>

论文:2 占比:0.00%

专利文献>

论文:77210 占比:99.78%

总计:77383篇

铁(Ⅲ)—发文趋势图

铁(Ⅲ)

-研究学者

  • 不公告发明人
  • 李杰
  • 张健
  • 吴道洪
  • 王磊
  • 王晶
  • 张雅静
  • 张伟
  • 李先兰
  • 王伟
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 郭加启; 骆湘; 常珊珊; 姜春竹
    • 摘要: 以芹菜茎为原料,采用水热法一步低成本制成了水溶性碳点(CDs),制备方法绿色环保,制得的碳点在紫外光照射下可发出蓝色荧光.通过荧光光谱仪、傅立叶红外光谱仪等对碳点的结构和光学性能进行表征.考察了共存离子、H2 O2对碳点性能的影响.同时,从盐离子浓度、pH、紫外光照时间等方面讨论了其光稳定性.与其它竞争金属离子相比,所制备的CDs蓝色荧光可被Fe3+有效地猝灭.因此,可用于Fe3+的检测,并在40~200μM的范围内做了线性曲线.
    • 金超; 罗克菊; 刘美玲; 杨显双
    • 摘要: 在乙酸-乙酸钠缓冲溶液中,铁(Ⅲ)被盐酸羟胺还原成铁(Ⅱ),再与显色剂邻菲罗啉和十二烷基苯磺酸钠(SDBS)反应生成橙红色的三元络合物,该络合物经过分散液液微萃取进行分离和富集,最终通过数字成像比色法(Digital Image Colorimetry,简称DIC)对铁(Ⅲ)进行定量测定.在优化的实验条件下,线性范围为0.020~0.200mg·L-1,相关系数为0.9996,检出限为0.006 mg·L-1,回收率为91.7% ~103.1%,相对标准偏差(RSD)为1.9% ~4.6%(n=10).该方法具有较高的灵敏度和准确度,可以用于测定环境水样中痕量铁(Ⅲ).
    • 毛雪华
    • 摘要: 研究了正癸醇对酸性氯化介质中铁的萃取性能.考察了正癸醇、氯离子和氢离子浓度对铁萃取过程的影响,探讨了萃取机理.研究结果表明:萃取液中铁以HFeCl4.2Decanol的形式存在.正癸醇对铁的萃取率随正癸醇和盐酸介质浓度的增加而增加,萃取速度快,五分钟即达萃取平衡,而对钛、铝、钙、镁离子无萃取性能.红外光谱分析进一步证实了铁萃合物的生成.萃合物易于反萃,以水或稀盐酸(<1 mol·dm-3)为反萃剂,铁一次反萃率均可达到90%以上.
    • 胡聪; 刘越盟; 胡潇雨; 孟勇
    • 摘要: 利用表面接枝印迹法,以硅胶为载体,甲基丙烯酸为配体,乙二醇二甲基丙烯酸酯为交联剂,成功制备了Fe3+表面印迹材料IIP-PMAA/SiO2,考察了IIP-PMAA/SiO2对Fe3+的吸附性能和选择识别能力.实验结果表明,该印迹材料的饱和吸附量为26.80 mg/g,最佳吸附 pH 值为2,吸附平衡时间为2 h,对 Fe3+离子具有很强的识别能力;同时材料的再生吸附性能也很稳定,重复使用10次吸附性能依然稳定.%A Fe3+imprinted silica material IIP-PMAA/SiO2by surface grafting blotting,using silica gel as carri-er,methacrylic acid as ligand,two glycol methyl acrylate as cross-linking agent.The adsorption properties and selective recognition ability on Fe3+of the imprinted polymer were studied by equilibrium-adsorption method. The experimental data showed that the maximum static adsorption capacity of the imprinted sorbent was 26.80 mg/g.The sorption equilibrium time was 2 h and the optimum pH for quantitative ferric iron retention was 2.0.The relatively selective factor (k′)of Fe3+to other metal ions was greater than 1.At the same time, the regenerative adsorption properties of the materials were also stable,and the performance was still stable af-ter repeated use of ten times.The IIP could be repeatedly used with high selectivity and stability for Fe(Ⅲ).
    • 刘文; 李婷婷; 李丽红; 张荣; 刁海鹏; 常宏宏; 魏文珑
    • 摘要: 以天然物质银杏果为反应起始物,一步水热法快速合成荧光碳量子点,通过透射电镜、红外光谱、X-射线光电子能谱、紫外可见光吸收光谱以及荧光光谱对其进行表征,得出合成的碳量子点具有准球形且尺寸小于10 nm,表面上含有羟基及羧基等亲水基团,紫外最大吸收在280 nm处,荧光的发射波长具有激发波长依赖性且最强发射波长在425 nm.合成的碳量子点具有很好的光学稳定性.在与金属离子作用实验中得出碳量子点对Fe3+具有很好的专一识别,且在1.0~20μmol/L有良好的线性相关性,检出限为0.18 μmol/L,可开发作为一种新型的优良Fe3+传感器.
    • 李学晶
    • 摘要: 在pH 5.20的NaAc-HAc缓冲溶液中,在羟丙基-β-环糊精和TritonX-100的存在下,水扬基荧光酮(SAF)本身呈较强的荧光(λex=365nm,λem=537nm)微克铁(Ⅲ)在此条件下,能与SAF生成配合物而使SAF-HP-β-CD-TritonX-100体系产生荧光熄灭现象.荧光减弱(△F)与铁(Ⅲ)浓度在0~3.0μg/25mL范围内呈良好的线性关系,该反应对铁(Ⅲ)的检出限为1.23μg/L,已经应用于自来水中微量铁的测定.且相对标准偏差均小于0.6%,加标回收率均在98.0%~101.4%.结果表明:羟丙基-β-环糊精对所研究的荧光体系均有增敏增稳作用.
    • 柴红梅; 孙雪花; 宋改芸; 张瑞; 祝磊
    • 摘要: 在pH 10.0的NH3-NH4Cl缓冲溶液中,微量Fe(Ⅲ)对罗丹明B的荧光强度具有明显的猝灭作用.实验研究了该猝灭反应并讨论了将其应用于铁(Ⅲ)分析的最佳条件.实验表明,于25 mL比色管中,分别依次加入3.00 mL罗丹明B溶液、一定量的Fe(Ⅲ)标准溶液、2.00 mL pH 10.0的NH3-NH4Cl缓冲溶液,用水稀释至刻度,摇匀,用1 cm四面透光的石英比色皿进行测定,体系的最大发射波长λem=580 nm,最大激发波长λex=550 nm.Fe(Ⅲ)的质量浓度在0.004~0.028 μg/mL范围内与其对应的荧光猝灭值ΔF呈良好的线性关系,相关系数为0.987 9,方法的检出限为0.003 8 μg/mL.将实验体系应用于不同环境水样(矿泉水、山泉水、自来水)中Fe(Ⅲ)的测定,测得结果与原子吸收光谱法(国家水质标准方法GB 11911-1989)基本一致,相对标准偏差(RSD,n=6)为3.5%~7.5%,回收率在99%~106%之间.%Micro Fe(Ⅲ) showed obvious quenching effect on the fluorescence intensity of rhodamine B in NH3-NH4Cl buffer solution at Ph 10.0.This quenching reaction was investigated and the optimal conditions for its application in Fe(III) analysis were discussed.In 25 Ml colorimetric tube, 3.00 Ml of rhodamine B solution, certain volume of Fe (III) standard solution and 2.00 Ml of NH3-NH4Cl buffer solution at Ph 10.0 were added.The solution was diluted to the mark with water.After shaking up, it was determined in 1 cm quartz cuvette which was pervious to light all around.The maximum emission wavelength and maximum excitation wavelength of system was λem=580 nm and λex=550 nm, respectively.The fluorescence quenching value (ΔF) showed linear relationship to the mass concentration of Fe(III) in range of 0.004-0.028 μg/Ml with correlation coefficient of 0.987 9.The detection limit of method was 0.003 8 μg/Ml.The proposed method was applied for the determination of Fe (III) in various environmental water samples (mineral water, spring water and tap water).The results were consistent with those obtained by atomic absorption spectrometry (GB 11911-1989 of national standard analysis method for water quality).The relative standard deviations (RSD, n=6) were between 3.5% and 7.5%.The recoveries were between 99% and 106%.
    • 王勇; 张远琴; 但娟; 施宗友
    • 摘要: With sample dissolved in hydrochloric acid, the ferric iron was titrated by EDTA with sulfosalicylic acid as indicator under the protection of shielding gas carbon dioxide and at the controlled temperature of (75±2) °C and pH of 1.5-2.0;then, ammonium persulfate was added to oxide the ferrous iron into ferric iron and the generated ferric iron was determined by EDTA so that the content of ferrous was obtained by subtracting MFe.The influence of experimental conditions such as system temperature, pH value and the selection of environmental protection on the determination were discussed.The proposed method was applied to the determination of ferric iron and ferrous iron in a blast furnace slag sample.The relative standard deviations (RSD,n=5) of the results were 0.76%-2.3%.Using the proposed method to detect three blast furnace slag samples, the results were in agreement with those of orthophenanthroline spectrophotometry.%采用盐酸溶解样品,在保护气二氧化碳的保护下,控制溶液温度在(75±2) °C、pH值在1.5~2.0范围内,以磺基水杨酸为指示剂,用EDTA标准溶液滴定Fe3+;然后加入过硫酸铵氧化Fe2+,继续用EDTA标准溶液滴定氧化生成的Fe3+,再减去金属铁(MFe)即得到Fe2+含量.试验讨论了溶液温度、酸度及环境保护措施的选择等条件对测定结果的影响.实验方法用于测定3个高炉渣样品中Fe3+和Fe2+,结果的相对标准偏差(RSD,n=5)为0.76%~2.3%.按照实验方法测定3个高炉渣样品中Fe3+和Fe2+,结果与邻二氮菲分光光度法测定结果相吻合.
    • 刘冰枝; 罗志勇; 郑怀礼; 蒋磊
    • 摘要: A catalytic kinetic spectrophotometric method ,which is based on the catalytic effect of Fe(Ⅲ ) on the fading reaction betweenpotassiumpersulfate(K2S2O8)andmethylred(MR)inthesolutionof0.30mol·L -1hydrochloricacid,forthedeter‐mination of trace amounts of Fe (Ⅲ) has been investigated .A novel detection system ,Fe(Ⅲ)‐HCl‐K2 S2 O8‐M R ,has been devel‐oped .The optimum experimental conditions for the determination of trace amounts of Fe (Ⅲ) were found on the basis of orthog‐onal test .The kinetics parameters and equation of this fading reaction of MR were studied .Its reaction mechanism was dis‐cussed .The results show that there is a good linear relationship between the variation of MR absorbance at the maximum ab‐sorption wavelength of 518 nm and the concentration of Fe(Ⅲ) under the optimum experimental conditions :ln(A0/A)=1.334 1+0.001 0 ,the correlation coefficient is 0.999 1 .The kinetic research shows that the reaction order with respect to Fe (Ⅲ) is 1 and the overall fading reaction is a pseudo‐first order reaction .The apparent activation energy of the fading reaction of MR is 69.88 kJ · mol-1 .Furthermore ,the catalytic effects of Fe(Ⅲ ) on this fading reaction is confirmed by its reaction mechanism . This novel method for the determination of trace Fe(Ⅲ ) has never previously been published so far .Trace amounts of Fe(Ⅲ ) can be selectively determined by this catalytic kinetic spectrophotometric method with high precision and accuracy .This method is simple and its reagents used are cheap and available .Its sensitivity is higher than that of conventional spectrophtometry with detection limit of 0.005 mg · L -1 .This detection system is stable .This proposed method has been applied to the determination of trace amounts of Fe(Ⅲ) in food and water samples with satisfactory results .Relative standard deviation of the detection re‐sults is 1.18% ~2.11% .Average recovery rate of the detection results is 98.0% ~104.0% .%在0.30mol·L-1盐酸中,铁(Ⅲ)显著催化过硫酸钾氧化甲基红的褪色反应,据此建立了测定痕量铁(Ⅲ)的“Fe(Ⅲ)‐盐酸‐过硫酸钾‐甲基红”新体系,研究了该体系测定痕量铁(Ⅲ)的最佳条件,考察了共存离子对测定的影响,分析了测定反应的动力学参数及方程,并利用动力学性质探讨了测定痕量铁(Ⅲ)的反应机理,从而构建了一种测定痕量铁(Ⅲ)的新催化动力学光度法。研究表明,在最大吸收波长518nm以及最佳测定条件下,该体系中甲基红的浓度变化与铁(Ⅲ)含量呈以下良好线性关系:ln(A0/A)=1.3341+0.0010,相关系数为0.9991;痕量铁(Ⅲ)发生一级反应,该测定体系符合准一级反应特征且反应的表观活化能为69.88kJ·mol-1;反应机理的研究进一步证明了该体系中痕量铁(Ⅲ)起催化作用;该痕量铁(Ⅲ)的测定方法操作简便,所用试剂廉价易得,目前还未见报道,其灵敏度优于普通光度法,检出限达0.005mg·L-1。该方法应用于实测水样和食品中痕量铁(Ⅲ),相对标准偏差为1.18%~2.11%,平均回收率为98.0%~104.0%。该测定体系稳定,结果满意。
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