Results 11 to 20 of about 323,458 (316)

Validação de método analítico livre de acetonitrila para análise de microcistinas por cromatografia líquida de alta eficiência

open access: yesQuímica Nova, 2013
Blooms of cyanobacteria represent a public health risk due to their cyanotoxins such as microcystins. Liquid chromatography techniques to separate and quantify microcystins invariably use acetonitrile as the organic component of the mobile phase.
Sérvio Túlio Alves Cassini   +2 more
doaj   +1 more source

Ionization of acetonitrile [PDF]

open access: yesInternational Journal of Mass Spectrometry, 2019
Abstract The ionization of acetonitrile has been studied using both electron and photon ionization combined with coincidence detection techniques. Relative partial ionization cross sections and relative precursor-specific partial ionization cross-sections are determined for all the cations formed from single, double and triple electron ionization of ...
Michael A. Parkes   +2 more
openaire   +2 more sources

N-Acetylation of Amines in Continuous-Flow with Acetonitrile—No Need for Hazardous and Toxic Carboxylic Acid Derivatives

open access: yesMolecules, 2020
A continuous-flow acetylation reaction was developed, applying cheap and safe reagent, acetonitrile as acetylation agent and alumina as catalyst. The method developed utilizes milder reagent than those used conventionally.
György Orsy   +2 more
doaj   +1 more source

Tetrakis(acetonitrile-κN)lithium hexafluoridophosphate acetonitrile monosolvate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2011
In the title compound, [Li(CH(3)CN)(4)]PF(6)·CH(3)CN, the asymmetric unit consists of three independent tetra-hedral [Li(CH(3)CN)(4)](+) cations, three uncoordinated PF(6) (-) anions and three uncoordinated CH(3)CN solvent mol-ecules. The three anions are disordered over two sites through a rotation along one of the F-P-F axes. The relative occupancies
Seo, Daniel M.   +2 more
openaire   +2 more sources

Crystal structure of cis-anti-cis-dicyclohexane-18-crown-6 acetonitrile disolvate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The title compound (systematic name: cis-anti-cis-2,5,8,15,18,21-hexaoxatricyclo[20.4.0.09,14]hexacosane acetonitrile disolvate), C20H36O6·2CH3CN, crystallizes from an acetonitrile solution of dicyclohexane-18-crown-6 on evaporation.
Alexander Nazarenko
doaj   +1 more source

Simultaneous Determination of Pyrethroid Insecticides in Foods of Animal Origins Using the Modified QuEChERS Method and Gas Chromatography-Mass Spectrometry

open access: yesFoods, 2022
Pyrethroid insecticides are used in agriculture to treat parasites in livestock. This study developed a simultaneous residue analysis method to measure seventeen pyrethroid insecticides in foods of animal origin, including beef, pork, chicken, milk, and ...
Byung Joon Kim   +2 more
doaj   +1 more source

Investigation on volumetric properties of 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid, acetonitrile, and their mixture using molecular dynamics simulation [PDF]

open access: yesشیمی کاربردی روز, 2017
Molecular dynamics simulation is an appropriate method for microscpoic modeling of materials and is widely used in several fields of science and technology.
Amir Nasser Shamkhali   +1 more
doaj   +1 more source

Bis(isonicotinamide-κN)silver(I) trifluoromethanesulfonate acetonitrile disolvate

open access: yesIUCrData, 2021
The central AgI atom of the title salt, [Ag(INAM)2](CF3SO3)·2CH3CN, where INAM is isonicotinamide (C6H6N2O), is twofold coordinated by the pyridine N atoms of two isonicotinamide ligands creating a slightly distorted linear molecular geometry.
Rafael A. Adrian   +2 more
doaj   +1 more source

Excess molar volume of acetonitrile + alcohol systems at 298.15 K. Part II: Correlation by cubic equation of state [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The excess molar volume VE of the binary liquid systems acetonitrile + methanol and acetonitrile + ethanol, experimentally determined in the previous part, were correlated by the PRSV CEOS coupled with the vdW and TCBT mixing rules.
SLOBODAN P. SERBANOVIC   +4 more
doaj  

A Study of Acid-Base Equilibria in Acetonitrile Systems of 2-Halo(Cl,Br,I)-4-nitropicoline(3,5,6) N-oxides

open access: yesMolecules, 1999
An attempt has been made to determine potentiometrically (1) acid dissociation constants of cations obtained by protonation of nine trisubstituted pyridine N-oxides, namely 2-halo(Cl, Br and I)-4-nitropicoline N-oxides with the methyl group at positions ...
Lech Chmurzynski   +3 more
doaj   +1 more source

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