نتایج جستجو برای: simple coprecipitation method
تعداد نتایج: 1973931 فیلتر نتایج به سال:
abstract according to increase in electricity consumption in one hand and power systemsreliability importance in another , fault location detection techniqueshave beenrecentlytaken to consideration. an algorithm based on collected data from both transmission line endsproposed in this thesis. in order to reducecapacitance effects of transmission line, distributed parametersof transmission line...
a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...
in the present work, a simple and sensitive method was developed for determination of morphine and heroin using gold nanoparticles as resonance rayleigh scattering (rrs) and colorimetric technique’s probe. synthesized gold nanoparticles by sodium citrate reduction method have a negative charge layer on their surfaces because of self-assembled citrate anions on their surface. binding of morphin...
Multifunctional core-shell nanocomposites with a magnetic core and a silica shell doped with lanthanide chelate have been prepared by a simple method. First, citric acid-modified magnetite nanoparticles were synthesized by a chemical coprecipitation method. Then the magnetite nanoparticles were coated with silica shells doped with terbium (Tb(3+)) complex by a modified Stöber method based on hy...
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
The main aim of this research is to obtain high purity potassium dihydrogen phosphate solution with Al, Cr, Fe and Ti impurity content < 0.05 ppmw (5⋅10-6 wt.%) by the simple and effective process of impurities coprecipitation with insoluble precipitants. The completeness of the coprecipitation with different coprecipitants of the above-mentioned impurities in saturated potassium dihydrogen pho...
In this work, KTiOPO4 nanoparticles were synthesized by both hydrothermal and coprecipitation methods and studies were carried out on their structural and optical properties. To study the physical properties of samples, XRD, FT-IR, UV-Vis and FE-SEM analyses were used. Hydrothermal method, using different starting materials, resulted to the production of finner particles (9.6 nm and 12.54 nm) c...
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