نتایج جستجو برای: uv vis spectrophotometer

تعداد نتایج: 83388  

2014
Anshu Chaudhary Anoop Singh Prabhakar Kumar Verma

BACKGROUND A rapid and sensitive ultraviolet-visible (UV-VIS) spectroscopic method was developed for the estimation of pyrimidine derivative 6-Bromo-3-(6-(2,6-dichlorophenyl)-2-(morpolinomethylamino) pyrimidine4-yl) -2H-chromen-2-one (BT10M) in bulk form. RESULTS Pyrimidine derivative was monitored at 275 nm with UV detection, and there is no interference of diluents at 275 nm. The method was...

Journal: :journal of sciences, islamic republic of iran 2015
s. jurablu m. farahmandjou t. p. firoozabadi

zinc oxide (zno) nanopowders were synthesized by the sol–gel method from an ethanol solution of zinc sulfate heptahydrate in the presence of diethylene glycol surfactant. detailed structural and microstructural investigations were carried out using x-ray diffraction (xrd), high-resolution transmission electron microscopy (hrtem), field emission scanning electron microscopy (fe-sem), fourier tra...

Journal: :Acta biochimica Polonica 2012
Iaroslav M Soroka Valeriy G Narushin Yuriy D Turiyansky Alexey A Tyurenkov

Blakeslea trispora is a good alternative source for producing such carotenoids as lycopene and β-carotene. The objective of this research was to elaborate a method for the simultaneous determination of lycopene and β-carotene in Blakeslea trispora products using a usual UV-vis spectrophotometer. The standard solutions of the mixture of different concentrations of β-carotene and lycopene were me...

Journal: :ENP Engineering Science Journal 2023

Polyaniline (PANI)-Fe2O3/CuO and PANI -Fe2O3/ZnO hybrid materials were developed prepared by in situ polymerization at 0°C using ammonium persulfate as oxidant. The resulting products are investigated for their structural properties X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), the results confirm formation of architecture. In addition, electroc...

2016
M.R.A. Bhuiyan M. K. Rahman

This paper discerns key ideas and themes of the possibility of growing Ni doped ZnO nanoparticles by electrochemical method. The purpose is to study the growth mechanism and to optimize the parameters of this method. Upon successful synthesizing the samples, they were characterized using various techniques. XRD, SEM, FTIR, photoluminescence spectroscopy together with the measured optical parame...

Journal: :Photochem 2022

As an appropriate quantity of hydroquinone (HQ) is essential to safeguard inhibition characteristics by eliminating the risk self-polymerization vinyl acetate monomer (VAM), determination HQ content in VAM very crucial ensure stability during storage and transportation as well achieve possibility a proper polymerization reaction. In this study, simple, cheap, time-saving, easy method has been d...

Journal: :Austin Journal of Analytical and Pharmaceutical Chemistry 2022

Objective: The study presents the validation protocol for determination of total phosphorus content at parts per million (ppm) (μg/L) levels in animal feed by a UV-Vis spectrophotometer. Methods: measured absorbance solutions against blank solution was 400 nm with A combined ammonium heptamolybdate tetrahydrate and monovanadate blue used as coloring reagent detection. This method validated eval...

2012
Weerachai Sangchay

The purpose of this research was to study the effect of doped Ag on phase transformation, morphology and photocatalytic activity of TiO2 powders. The composites powders were prepared by sol-gel method via calcinations at a temperature 400 °C for 2 h with a heating rate of 10 °C/min. The microstructure and crystallite size of TiO2 and TiO2-Ag powders were characterized by XRD, EDX and SEM. Final...

Journal: :international journal of nano dimension 0
a. pourahmad department of chemistry, faculty of science, islamic azad university, rasht branch, rasht, iran. sh. sohrabnezhad department of chemistry, faculty of science, university of mohaghegh ardabili, ardabil, iran.

the reduction capacity of ammonia while present even at ppm level can be demonstrated by the increased encounter probability between ammonia and methylene blue dye (mb+) incorporated in nanomordenite and na-mor zeolites. the rate of reduction methylene blue dye by ammonia on the surface nanomordenite zeolite is faster than na-mordenite (na-mor) zeolite.because nanomordenite zeolite with high si...

Journal: :Jurnal Penelitian Pendidikan IPA (JPPIPA) 2022

CeVO4 as visible light driven photocatalyst was synthesized using Senna occidentalis (L.) Link leaves extract (SOE) by sol-gel method which can increase the degradation of malachite green (MG) under irradiation. The products were characterized Fourier Transform Infrared Spectrophotometer (FTIR), X-ray Diffraction (XRD), and Field Emission Scanning Electron Microscope Energy Dispersive Spectrosc...

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