[PDF] Top 20 SILICA GEL: A KEYSTONE IN CHROMATOGRAPHIC TECHNIQUES
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SILICA GEL: A KEYSTONE IN CHROMATOGRAPHIC TECHNIQUES
... Silica gel patented by chemistry professor Walter ...1959, silica gel was first supplied in “closed packages” for used as a buffering agent in museum applications to control relative .... ... See full document
11
Chromatographic Separation of Heavy Metal Cations on a Silica gel-G
... other chromatographic techniques, because of its simplicity and relatively low ...of silica gel and an alumina layer with surfactant –mediated mobile phase systems [9-15] has been used to ... See full document
7
Effective separation of organic dyes using ionic liquids as green mobile phase and polyaniline-modified silica gel nanocomposite-based thin-layer chromatography
... other chromatographic techniques such as low cost of instrumen- tation, the ability of making simultaneous separations and shorter time required in ...optimal chromatographic conditions for the ... See full document
14
Effect of Heat on the Adsorption Properties of Silica Gel
... The silica gel sample used in the above experiment was subjected to thermal treatment at 450 and 650 ºC and their water adsorption evolutions were followed by near infrared spectroscopy and ... See full document
5
Comparison of Silicon Nitride Nanofibers Synthesized Using Silica Nanopowders and Silica Gel
... precursor silica source on the morphology and nature of the silicon ni- tride ...grew. Silica nanopowders and silica gel were both used separately as the source of ... See full document
7
Lithium bis(Oxalato)Borate-Based Electrolyte for Lithium-Ion Cells
... fumed silica have been studied in various lithium battery electrolytes 113-117 and in addition to the increase in the conductivity noticed after adding fumed silica to some polymer electrolyte due to ... See full document
222
SYNTHESIS AND CHARACTERIZATION OF MESOPOROUS SILICA USED AS CATALYST IN BIODIESEL PRODUCTION
... of silica nanoparticles were ...mesoporous silica materials starting from sodium silicate solutions using a sol-gel ...the silica source. The morphology and size of silica nanoparticles ... See full document
6
Preparation of substituted tetrahydro-1-benzazepines by lithiation-trapping
... onto silica then was purified by flash column chromatography on silica gel, eluting with petrolÐEtOAc (95:5), to give the carbamate 8a (71 mg, 68%) as an oil; R f ... See full document
10
Crystallization of Lead Phosphate in Gel Systems
... pure gel layer as can be seen in SEM images at higher magnification as shown in ...pure gel layer occur for all the different densities of PO 43 gel ... See full document
8
High Performance Thin Layer Chromatographic Quantification Domperidone and Paracetamol in Tablets Forms Domperidone, Paractamol, Silica gel HPTLC Plate, HPTL
... Domperidone and paractamol standards were obtained forms SUN Pharma, MUMBAI, India. (9mg DMP and 540 PAR) tablets forms manufactured by Torrent Pharma were purchased locally. Analytical- grade acetone and methanol ... See full document
5
Fabrication and characterization of microlasers by the sol-gel method
... fabricate silica films is the sol-gel ...size-tunable silica nanocubes have been fabrication by sol-gel or mediated sol-gel methods ... See full document
113
Mechanisms Normal Phase pdf
... There are three basic types of bonded phases which are produced by the use of the mono-, di- and tri- substituted silanes: brush phases, oligomeric phases and bulk phases. For example, the monochlorsilanes (e.g. ... See full document
6
Developments in Analytical Methods for Detection of Pesticides in Environmental Samples
... Simple liquid chromatography consists of a column with a narrow bottom containing the stationary phase. The column is a made of glass and its length and diameter depend on the compound to be separated. The optimum ... See full document
15
Nanostructured Silica/Gold Cellulose Bonded Amino POSS Hybrid Composite via Sol Gel Process and Its Properties
... the silica/gold nanoparticles via the sol-gel process is as ...the silica/gold nanoparticles is a four-step process in which the monodisperse-silica nanoparticles are first grown using the ... See full document
13
Optical, thermal and dielectric studies of silver silica nanoparticles synthesized via sol gel technique
... Keywords: dielectric properties, negative permittivity, refractive index, Silver Silica nanocomposite, sol-gel, various composition, thermal properties... Silver-silica nanocomposites Ag[r] ... See full document
8
Micro-solid phase extraction methods based on molecularly imprinted polymer for determination of toluene metabolites in urine samples
... Tambahan lagi, kedua-dua sampel MISPE memaparkan diameter liang masing- masing 4.70 nm dan 2.20 nm, yang membuktikan kehadiran mesoliang di dalam strukturnya. MISPE-HA menunjukkan kapasiti penjerapan lebih tinggi (9.67 ... See full document
81
Technology Transfer in Pharmaceutical Industries through Product Development and Scale-Up Process Approaches: Challenges and Opportunities for Developing Countries
... scale-up techniques and keystone professions for technology transfer process in pharmaceutical industries in developing countries through taking an invention from its inception in a laboratory to a ... See full document
14
A REVIEW ON BASIC CHROMATOGRAPHIC TECHNIQUES
... found in the presence of potentially interfering matrix. Examples where the ECD was chosen to detect a specific chemical family over interfering backgrounds include: halocarbons in air for oceanographic tracer studies;. ... See full document
19
Ionic liquid as separation enhancer in thin-layer chromatography of biosurfactants: mutual separation of sodium cholate, sodium deoxycholate and sodium taurocholate
... in silica gel stationary phase which modifies the surface structure and provides bet- ter resolution of biosurfactants (SC, SDC and STC) in the presence of 2-methyltetrahydrofuran, a green alter- native ... See full document
9
Monoestolides Synthesis From Ricinoleic-Oleic Acids Using Silicotungstic Acid Sol-Gel Catalyst
... Spectrometry (LC-MS) of reaction products results showed chromatographic peaks for the presence of three new monoestolides at retention times (tR) 9.2 min (m/z 577.48, as [M-H]-), 11.2 min (m/z 559.46, [M-H]-) and ... See full document
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