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2 edition of Separation of trace metal impurities from phosphoric acid on chelex-100 found in the catalog.

Separation of trace metal impurities from phosphoric acid on chelex-100

P. Murugaiyan

Separation of trace metal impurities from phosphoric acid on chelex-100

by P. Murugaiyan

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  • 12 Currently reading

Published by Council of Scientific and Industrial Research .
Written in English


Edition Notes

Photocopy of: Indian Journal of Technology, vol. 26, (1988), pp.194-196.

Other titlesIndian Journal of Technology.
StatementP. Murugaiyan, H. Parasuramaiyer and Ch. Venkateswarlu.
ContributionsParasuramaiyer, H., Venkateswarlu, Ch.
ID Numbers
Open LibraryOL16493988M

Transcript. 1 METHODS IN BIOTECHNOLOGY TM 16 Environmental Microbiology Methods and Protocols Edited by John F. T. Spencer Alicia L. Ragout de Spencer. 2 Environmental Microbiology. 3 M E T H O D S I N B I O T E C H N O L O G Y John M. Walker, SERIES EDITOR Microbial Processes and Products, edited by Jose Luis Barredo, The acid treatment aione, as weii as in soiid to iiquid ratios in the batch mode. Maximum adsorption combination with heat treatment, increased arsenic removai occurred over a pH range of 3–4 for arsenic and 4–5 for iead effi- ciency [,]. Combined acid/heat treatment provided and cad- mium. The equiiibrium data were modeied with best 5/5(1).

The analysis was performed by alpha spectroscopy after pre-concentration and separation of uranium by cation exchange (Chelex resin) and finally its electro-deposition on stainless steel discs. The uranium concentration in deep wells and springs varies strongly between and μg l-1 and the corresponding U and U activity. The activity concentrations of U and U have been determined in groundwater samples of hot springs and deep wells in Northern Greece. The analysis was performed by alpha spectroscopy after pre-concentration and separation of uranium by cation exchange (Chelex resin) and finally its electro-deposition on stainless steel discs.

Martin Brennan - A Practical Approach to Quantitative Metal Analysis of Organic Matrices () код для вставки. Before the determination of trace impurities in bismuth the latter is removed from nitric acid solution as the sparingly soluble iodide or the basic nitrate []. In the analysis for Cu, Zn, Cd, Ni, Pb, Mn, and Fe traces in silver, the matrix is precipitated as AgC1 from dilute nitric acid medium []. The trace elements do not collect


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Separation of trace metal impurities from phosphoric acid on chelex-100 by P. Murugaiyan Download PDF EPUB FB2

The equilibrium constants for the extraction of zinc and cadmium from phosphoric acid solution were found to be × 10−2 mol1/2 L−1/2 and × 10−4 mol3/4 L−3/4, respectively. AbstractThe main aim of this chapter exactly characterizes the contribution. The analytical chemistry of the rare earth elements (REEs) very often is highly complicated and the determination of a specific element is impossible without a sample pre-concentration.

Sample preparation can be carried out either by separation of the REEs from the matrix or by concentrating the : Bin Hu, Man He, Beibei Chen, Zucheng Jiang. A new simple and sensitive preconcentration, separation and environmentally friendly method based on carrier element free coprecipitation (CEFC) was developed using 4-(2-hydroxybenzylideneamino)-1,2-dihydro-2,3-dimethylphenylpyrazolone (APSAL) as a new organic co-precipitant to precipitate Cr 3+, Cu 2+, Fe 3+, Pb 2+ and Zn 2+ ions from water and food by: EPA//R/ September Trace Metal Clean room by Margaret M.

Goldberg Analytical and Chemical Sciences Research Triangle Institute P. Box Research Triangle Park, NC Contract Number: C Work Assignment Number: 04 Billy B.

Potter, Work Assignment Manager Angela Moore, Project Officer National Environmental Research Laboratory Office of Research and.

The separation of 90 Y from a parent solution of 90 Sr Y in mol∙l-1 nitric acid by two-stage liquid-liquid extraction has been investigated using semicounterflow centrifugal extractors.

Often the requirement is for quality control on trace metal impurities in a troublesome matrix to meet strict limits. The major component in the sample causes chemical interference, non-specific absorption, or salting-up of the burner, as well as potential dissolution : L. Ebdon. Figure 1.

The sorption capacity of ion exchangers depending on pH. Additionally, ion exchangers possess: the iminodiacetate functional groups (-N{CH 2 COOH} 2), phenol (-C 6 H 4 OH), phosphonic (-PO 3 H 2) and phosphine (-PO 2 H) functional groups.

These groups are acidic in nature and are dissociated with the exchange of H + or Na + ions for other cations from the by:   Process for preparing pure silicon dioxide from a hexafluorosilicic acid solution by controllably and vigorously admixing, stirring or blending a hexafluorosilicic acid solution with a quantity of ammonium hydroxide solution amounting to about 40 to about 75 percent by weight of the quantity stoichiometrically required for the converting hexafluorosilicic acid to ammonium fluoride and silicon.

Dept. of Chemistry): Separation of Tl and Pb by ion-exchange chromatography on AG 50W-X4 and Chelexafter proton bombardment of a thallium cyclotron target.S.

Afr. Chem. ISSN SAJCD. (Jun ). 42(2) p. 68– (RN ). Google ScholarCited by: 1. CONTENTS (VOLUME II) Page List of Figures xvm List of Tables XX Acronyms and Abbreviations XXIII Unit Conversion Factors xxxi 10 Field and Sampling Issues That Affect Laboratory Measurements Part A: Generic Issues Introduction Field Sampling Plan: Non-Matrix-Specific Issues Determination of Analytical Sample Size Field Equipment and Supply.

Chromatographic separation of In from irradiated cadmium by using ampholyte Chelex– and carbon sorbent (in session "Poster Session - Radiopharmaceutical Chemistry, Labelled Compounds") Determination of impurities in phosphoric acid by INAA (in session "Nuclear Analytical Methods 2") Separation and preconcentration of trace.

'Inductively Coupled Plasma Mass Spectrometry For Trace Analysis Using Flow Injection On-line Preconcentration And Time-of-flight Mass Analyser', Trends Anal.

Chem., 21(5) Cyclotron-produced 44m/44 Sc. The procedure of 44m Sc/ 44 Sc production at the Arronax cyclotron has been described elsewhere. 12 Briefly, an irradiated natural CaCO 3 ( mg) target was dissolved in aq. HCl (4 M, 10 mL) and the resulting solution was loaded onto a column filled with DGA resin.

Then, the column was washed with aq. HNO 3 (1 M, 10 mL) to remove all other metal by: In addition, trace metal impurities in major salt solutions prepared from reagent grade chemicals may exceed the nominal metal concentrations of some media.

In these cases, it is necessary to remove impurities from the chemical reagents by the passing of macronutrients and of some micronutrients through a resin Chelex column (Bio-Rad. The radioactive isotopes, 95Zr, 95Nb, mTe, Ce and Hf were used to trace the sorption behaviors of the corresponding elements, which were studied in mixtures of them.

The differences between the sorption behaviors of the studied metal ionic species on both kinds of ion exchangers were interpreted and discussed in this : Fatma H. El-Sweify, Ehab A. El-Shazly, Shreen M. Salama.

Adsorbed carboxylic acid group containing molecules may be eluted from resins by adjustment of the solvent pH, either to suppress Table 1 Approximate pKa Values for Various Types of Functional Groups Functional group –SO3H Sulfonic acid –PO3H Phosphoric acid –CO2H Carboxylic acid –NR2 Tertiary amine Quanternary ammonium –NR3þ Type I.

Atomic absorption, emission and fluorescence spectrometry. In the determination of Pb in road dust by solid-sampling high resolution continuum-source AAS, either the use of the insensitive nm line or a partial peak (pixel) integration of the more sensitive nm line was required 27 to provide a method with a useful assaying by: The observed second-order rate constant at 25 C decreased non-linearly from × to × M−1 s−1 as pH increased from to An oxygen transfer mechanism was proposed for the oxidation of As(III) by Fe(VI).

Fe(VI) was very effective in arsenic removal from water at a. How To Create from Splendidly Curious Church of Christ @ Rolls Royce Sub. podcast_book-jawn_ ANTON FORTEGO Capitals Report CryptoHex Cultural Heritage Forum Featured software All software latest This Just In Old School Emulation MS-DOS Games Historical Software Classic PC Games Software Library.

Full text of "Sample Preparation Techniques in Analytical Chemistry (Wiley, )" See other formats. Transcript. 1 Sample Preparation Techniques in Analytical Chemistry. 2 CHEMICAL ANALYSIS A SERIES OF MONOGRAPHS ON ANALYTICAL CHEMISTRY AND ITS APPLICATIONS Editor J. D. WINEFORDNER VOLUME A complete list of the titles in this series appears at the end of this volume.

3 Sample Preparation Techniques in Analytical Chemistry Edited by SOMENATH MITRA .Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online.

Easily share your publications and get them in front of Issuu’s.The method is based on the adsorption of Pb(II) ions on the inner surface of a silica capillary tube (length, 25 m; i.d., mm).

The metal ions that were concentrated on a silica surface for minutes were eluted on-line with a small amount of diluted nitric acid solution in a carrier line.