Results 11 to 20 of about 707,336 (319)

The Use of Plasmonic Spectroscopy for Detecting Ultra-Low Concentrations of Substances

open access: yesPhotonics, 2022
This paper presents the results of research into the excitation of a surface electromagnetic wave (SEW) in Au/AgI and Au/Ag films contacting aqueous solutions of hydrogen peroxide (H2O2) and sodium chloride (NaCl).
Michael Kononov   +3 more
doaj   +1 more source

Arsenic Removal from Aqueous Solutions Using Modified and Unmodified Oak Sawdust [PDF]

open access: yesآب و فاضلاب, 2016
In this research, oak sawdust, in both modified and unmodified forms, was used as an economical and low-cost material for the removal of arsenic from aqueous solutions.
Ali Reza Rahmani, samira Amini
doaj  

Sonophotoluminescence from aqueous and non-aqueous solutions

open access: yesUltrasonics Sonochemistry, 1999
The sonoluminescence generated in air-saturated aqueous and non-aqueous solutions using 515 kHz ultrasound has been used to vibronically excite several fluorescent solutes, namely fluorescein, eosin, pyranine and pyrene. Emission, referred to as 'sonophotoluminescence', was generated in situ with emission spectra that closely matched those obtained by ...
M, Ashokkumar, F, Grieser
openaire   +2 more sources

Synthesis of Zero Valent Iron Nanoparticles (nZVI) and its Efficiency in Arsenic Removal from Aqueous Solutions [PDF]

open access: yesآب و فاضلاب, 2011
The aim of this study to synthesize nanoparticle zero valent iron and to determine its efficiency in arsenic removal from aqueous solutions. Nanoparticles were synthesized by reduction of ferric chloride using sodium borohydrid.
Ali Reza Rahmani   +3 more
doaj  

New insights on the Chemical Stability of Curcumin in Aqueous Media at Different pH: Influence of the Experimental Conditions

open access: yesInternational Journal of Electrochemical Science, 2019
From spectrophotometric and electrochemical measurements recorded in curcumin aqueous solutions at different pH values, both the stability and the acidity constants of curcumin were evaluated.
J. Martínez-Guerra   +5 more
doaj   +1 more source

Adsorptive removal of phenol and aniline by modified bentonite: adsorption isotherm and kinetics study

open access: yesApplied Water Science, 2018
In the present study, the adsorptive potential of modified bentonite in a batch system for the removal of aniline and phenol from aqueous solutions was investigated.
Shahin Ahmadi, Chinenye Adaobi Igwegbe
doaj   +1 more source

Methocarbamol Degradation in Aqueous Solution

open access: yesJournal of Pharmaceutical Sciences, 1994
The kinetics of the hydrolysis of methocarbamol to the corresponding diol guaifenesin in aqueous solution was studied. Methocarbamol was rather stable in acidic media but easily hydrolyzed in alkaline solution. The formation of an unknown compound, proved to be an isomer of methocarbamol [the 3-(2-methoxyphenoxy)-propanediol 2-carbamate] is involved ...
Pouli, N.   +2 more
openaire   +3 more sources

Simultaneous Spectrophotometric Determination of o-Aminophenol and p-Aminophenol Using H-Point Standard Addition Method -Application to Real Waters [PDF]

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2012
H-point standard addition method (HPSAM) has been applied to the simultaneous determination of o-aminophenol (oA) and p-aminophenol (pA) isomers in binary mixtures.
Theia'a N. Al-Sabha, Nagham N. Habeb
doaj  

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Spectrophotometric Determination of Aminophenol Isomers in Aqueous Solution using 1,2-Naphthoquinone-4-sulphonate Reagent [PDF]

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2011
A spectrophotometric method was developed for the quantitative determination of aminophenol isomers. The method is based on their reaction with 1,2-Naphthoquinone-4-sulphonate (NQS) reagent in aqueous basic medium forming colored products with maximum ...
T. N. Al-Sabha, N. N. Habeb
doaj  

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