Results 101 to 110 of about 5,392 (242)

Investigation of sodium sesquicarbonate producing [PDF]

open access: yes, 2012
A method of sodium sesquicarbonate (Na2CO3 · NaHCO3 · 2H2O) producing by polythermal crystallization from the saturated solution at 100°C which contains NaCl, Na2CO3 and NaHCO3 at the molar ratio Na2CO3 : NaHCO3 = 2 : 1 is developed. It is shown that the
Alekseev, А. D.   +3 more
core  

Результаты сравнительных исследований варианта внутреннего стандарта MALDI/TOF/MS с другими методами количественного анализа резвератрола [PDF]

open access: yes, 2012
Рассмотрен вариант внутреннего стандарта MALDI/TOF/MS в сравнении с другими методами количественного анализа на примере субстанции ...
Васильев, Г. В.   +2 more
core   +1 more source

Lesne vrste centralnoafriške republike : vsebnost pepela in silikatov [PDF]

open access: yes, 2017
Izmerjena je bila vsebnost pepela in silicijevega dioksida za 28 tropskih afriških listavcev in ene enokaličnice (Dracaena mannii). Vsebnost pepela je močno variirala. Večina zabeleženih vrednosti se je gibala med 0,3-1,4 %.
Piškur, Mitja   +2 more
core  

The determination of polymeric derivatives of guanidine in disinfectants by two-phase titration

open access: yesТонкие химические технологии, 2015
The article considers the results of identifying the disinfectant water-soluble guanidines polymers by means of methods including spectrophotometry, infrared spectroscopy, fluorescence analysis, as well as the use of gold nanoparticles.
O. I. Kozoor   +3 more
doaj  

François-Antoine-Henri Descroizilles (1781-1825), demostrador real de química, boticario, inventor y químico industrial: padre del análisis volumétrico. Parte 1ª [PDF]

open access: yes, 2018
In this contribution the life and work of François-Antoine-Henry Descroizilles is reviewed. He is recognized as a multifaceted person, and as a skilled and wise chemist by eminent scientists of his time.
García Asuero, Agustín   +2 more
core   +1 more source

Spectrophotometric Assay of Phenylephrine Hydrochloride Using 4-Aminoantipyrine and Copper (II) [PDF]

open access: yes, 2010
A new spectrophotometric method is proposed for determination of phenylephrine hydrochloride. The method is based on the coupling of 4-aminoantipyrine (4-AAP) with phenylephrine hydrochloride (PEH) to give a new ligand that reacts with copper (II) in the
Theia'a N. Al-Sabha
core  

Acid–base titrimetric assay of hydroxyzine dihydrochloride in pharmaceutical samples [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2010
Two simple titrimetric methods have been developed for the determination of hydroxyzine dihydrochloride (HDH) in pure form and in tablets. The principle of the methods are simple acid–base reactions in which the hydrochloride content of the drug was ...
Kanaka¬pura Basavaiah Vinay   +2 more
doaj  

Determination of Metoclopramide Hydrochloride in Pharmaceutical Formulations using N-Oxidation Caroate. [PDF]

open access: yesTurk J Pharm Sci, 2022
Blazheyevskiy M   +3 more
europepmc   +1 more source

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