搜索结果: 1-15 共查到“知识库 化学 Iron”相关记录21条 . 查询时间(0.134 秒)
Chelating agent free solid phase extraction (CAF-SPE) method for separation and/or preconcentration of iron(III) ions
Iron determination solid phase extraction preconcentration
2010/10/15
This paper presents a chelating agent free solid phase extraction (CAF-SPE) method for the separation and/or preconcentration of trace iron(III) ions. This method is based on the sorption of Fe(III) i...
Application of a Dynamic Reaction Cell (DRC) ICP-MS in Chromium and Iron Determinations in Rock, Soil and Terrestrial Water Samples
Application of a Dynamic Reaction Cell Chromium Iron Determinations Rock
2010/9/15
Despite environmental and geochemical interests, Cr and Fe have been left beyond the reach of determinations by ICP-MS due to severe interferences originating from Ar. The applicability of a dynamic r...
Flow Injection Determination of Iron Ions with Green Tea Extracts as a Natural Chromogenic Reagent
Iron Ions Green Tea Extracts Natural Chromogenic Reagent
2010/9/20
A green chemistry system that utilizes natural extract as an alternative reagent for determination of metal ions has been investigated. The extract of green tea, a common beverage, is used for quanti...
Development of a Discrete Flow System Using a Microsyringe as a Cell for the Photometric Determination of Iron
Microsyringe Cell Photometric Determination Iron
2010/9/20
A simple discrete flow system for the photometric determination of iron using a glass syringe as a mixer of a solution and as a sample cell has been developed. The system was assembled from a coupler...
Studies of Heterogeneous Hydrothermal Stripping from Iron-loaded Naphthenic Acid–Alcohol–Kerosen
iron-loaded organic phase heterogeneous hydrothermal stripping rate equation
2009/11/13
The technique of hydrothermal stripping from mixed aqueous-organic systems is a promising method for synthesizing oxide ceramic powders for high-performance applications. Some factors influencing hete...
A simple spectrophotometric method for the determination of iron(II) aqueous solutions
Spectrophotometry iron determination morin alloys steels environmental biological samples soil samples
2010/4/8
An ultra-sensitive and highly selective non-extractive spectrophotometric method is presented for the rapid determination of iron(II) at trace levels using 2', 3, 4', 5, 7-Pentahydroxyflavone (morin) ...
Analytical Applications of Reactions of Iron(III) and Hexacyanoferrate(III) with 2,10-Disubstituted Phenothiazines
phenothiazines promazine flow injection chlorpromazine
2009/9/4
The presented review is devoted to analytical applications of reactions of Fe(III) and K3[Fe(CN)6] with 2,10-disubstituted phenothiazines (PT). It was found that iron(III) and hexacyanoferrate(III) io...
Determination of Iron Monosulfide and Iron Disulfide in Suspensions by an Electrochemical Method Using a Platinum-Silver Twin-Electrode
Determination Iron Monosulfide Iron Disulfide Suspensions Electrochemical Method
2010/9/13
New electrochemical technique with a Pt-Ag twin electrode is proposed for the determining the contents of iron sulfides (FeS and FeS2) in a suspension. After electrolytic oxidation with a Pt electrode...
铁、氮共掺杂二氧化钛粉末的制备及光催化活性(Preparation and Photocatalytic Activity of TiO2 Powder Codoped with Iron and Nitrogen)
二氧化钛 铁 氮共掺杂 亚甲基蓝 光催化
2010/8/18
Using TiCl4 as the titanium source, nanoparticles of TiO2 doped with nitrogen(N-TiO2) were synthesized by triethylamine. TiO2 powder codoped with iron and nitrogen(Fe/N-TiO2) were prepared by adsorpti...
Template Synthesis and Structural Characterization of Homo Binuclear Chromium(III), Manganese(III), Iron(III), Cobalt(III), and Ruthenium(III) Complexes with Octaazamacrocyclic Ligands
Synthesis chromium manganese iron cobalt ruthenium macrocycles
2010/4/19
The Schiff base octaazamacrocyclic ligands derived from primary diamines and 3,6-dimethyl/diphenyl-4,5-diazaocta-3,5-diene-2,7-dione, and their binuclear complexes [M2LCl4]Cl2 [M = Cr(III), Fe(III), C...
HY沸石超笼“半三明治”环戊二烯铁物种的接枝(Grafting of “Half-sandwich” Cyclopentadiene Iron Species into HY Supercage)
HY沸石 Cp2Fe 接枝反应 半三明治 环戊二烯铁
2010/8/25
在真空条件下研究了Cp2Fe在HY沸石表面的接枝反应,并用原位FTIR、ICP、XRD、TPD-MS和UV-Vis DRS等方法对接枝产物的组成、结构及性质进行了表征。结果表明,在低于423 K的温度下,Cp2Fe可以强吸附在沸石的超笼内,并被氧化为Cp2Fe+阳离子;当在423 K长时间加热时,Cp2Fe+可与超笼表面的酸性中心发生化学反应,脱除一个环戊二烯基团,在沸石超笼形成“半三明治”环戊二...
Synergic effect of calcium oxide and iron (III) oxide on the dechlorination of hexachlorobenzene
Dechlorination HCB CaO a-Fe2O3 Synergic effect
2013/12/12
Dechlorination of hexachlorobenzene (HCB) was achieved by a mixture of commercial CaO and a-Fe2O3 (CaO/a-Fe2O3) in closed systems at temperatures of 300 C and 350 C, which exhibited a synergic effec...
Selective Oxidation of Thiols to Disulfides Catalyzed by Iron(III) -- Tetra Phenyl Porphyrin Using Urea-Hydrogen Peroxide as Oxidizing Reagent
Thiols Fe (TPP) Cl Urea hydrogen peroxide disulfides
2010/4/20
Oxidation of thiols to disulfides catalyzed by iron(III) -- tetra phenyl prophyrin Fe (TPP)Cl was investigated using urea-hydrogen peroxide adduct (UHP) as an oxidant in methanol as a solvent.
Determination of Cadmium, Copper, Iron, Manganese, Lead and Zinc in Lichens and Botanic Samples by Electrothermal and Flame Atomic Absorption Spectrometry
Lichen ETAAS Ni + Pd + TA Copper Iron
2010/4/20
Within the framework of the International Atomic Energy Agency (IAEA) Analytical Quality Control Service (AQCS) Chemistry Unit a research program was initiated for the identification of trace elements...
Spectrophotometric Determination of Iron(II) with 5-Nitro-6-amino-1,10-phenanthroline
5-Nitro-6-amino-1,10-phenanthroline visible spectrophotometry determination of iron(II)
2010/4/21
A new spectrophotometric method is developed for the determination of Fe(II) with 5-nitro-6-amino-1,10-phenanthroline (NAF). In this work, the effect of factors such as pH, amount of reagent (NAF), re...