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  1. No Access

    Article

    Use of Microemulsions for Tetraphenyltin Determination by High-Performance Liquid Chromatography with Spectrophotometric Detection

    Using an example of tetraphenyltin (TePT), a new method is developed and tested for the isolation and preconcentration of toxic organometallic compounds from soils. It consists in the preconcentration of the targ...

    A. V. Pirogov, V. V. Levkina, E. A. Ovinova… in Journal of Analytical Chemistry (2019)

  2. No Access

    Article

    Macrocyclic Antibiotics as Chiral Selectors in High-Performance Liquid Chromatography and Capillary Electrophoresis

    Data on the use of macrocyclic antibiotics (vancomycin, teicoplanin, teicoplanin aglycone, and eremomycin) for the enantioseparation of amino acids, various amino acid derivatives, α-phenylcarboxylic acids, β-...

    E. N. Shapovalova, I. A. Fedorova, I. A. Anan’eva… in Journal of Analytical Chemistry (2018)

  3. No Access

    Article

    Separation of β-Blocker Enantiomers on Silica Modified with Gold Nanoparticles with Immobilized Macrocyclic Antibiotic Vancomicin

    A new chiral sorbent based on mercaptosilica modified by gold nanoparticles, then treated by 3-mercaptopropionic acid and macrocyclic antibiotic vancomycin, was obtained. The enantioseparation of isomeric β-bl...

    I. A. Anan’eva, Ya. A. Polyakova, E. N. Shapovalova… in Journal of Analytical Chemistry (2018)

  4. No Access

    Article

    Using Sorbents modified by gold nanoparticles in chromatography

    The use of sorbents modified by metal nanoparticles in HPLC for the separation of various organic substances is discussed. Authors’ data on the synthesis and study of silicas modified by gold nanoparticles sta...

    I. A. Anan’eva, Ya. A. Polyakova, E. N. Shapovalova… in Journal of Analytical Chemistry (2017)

  5. No Access

    Article

    Determination of the hydrolysis products of nerve agents in natural waters by liquid chromatography–mass spectrometry

    An approach to the determination of markers of the application of four nerve agents, S-(2-diethylaminoethyl)methylphosphonothioate, S-(2-diisopropylaminoethyl)methylphosphonothioate, bis(2N,N-diethylaminoethyl)di...

    I. A. Rodin, A. V. Braun, T. M. Baygildiev… in Journal of Analytical Chemistry (2015)

  6. No Access

    Article

    Regularities of the retention of aminopyridines by silica gel modified with gold nanoparticles

    New sorbents based on silica gel and gold nanoparticles stabilized by L-cysteine and its methyl ester are synthesized. Regularities of the retention of various substituted aminopyridines by the synthesized sor...

    Ya. A. Elfimova, D. A. Pichugina, I. A. Anan’eva… in Russian Journal of Physical Chemistry A (2012)

  7. No Access

    Article

    Detection of nerve agent markers by liquid chromatography-mass spectrometry

    An approach to the detection of metabolites of organophosphorous agents (OPA), such as O-iso-propylmethylphosphonic acid (detection limit, 4 ng/mL), O-pinacolylmethylphosphonic acid (0.6 ng/mL), and O-isobutyl...

    I. A. Rodin, A. V. Braun, I. A. Anan’eva, O. A. Shpigun… in Journal of Analytical Chemistry (2011)

  8. No Access

    Article

    Determination of the products of the oxidative transformation of unsymmetrical dimethylhydrazine in soils by liquid chromatography/mass spectrometry

    Procedures are developed on the basis of liquid chromatography/mass spectrometry for determining the transformation products of unsymmetrical dimethylhydrazine in soils: formic acid dimethylhydrazide (1-formyl...

    I. A. Rodin, I. A. Anan’eva, A. D. Smolenkov… in Journal of Analytical Chemistry (2010)

  9. No Access

    Article

    Matrix effect on the enantiorecognition ability of adsorbents based on heptakis(6-amino-6-deoxy)-β-cyclodextrin

    Four adsorbents were synthesized by immobilizing a chiral selector, heptakis(6-amino-6-deoxy)-β-cyclodextrin, on different silica matrices, such as LiChrosorb Si 100, 10 μm; Silasorb SPH Amin, 5 μm; Kromasil 1...

    E. V. Potekhina, I. A. Anan’eva, E. N. Shapovalova… in Journal of Analytical Chemistry (2007)

  10. No Access

    Article

    Determination of Amino Acid Enantiomers in Pharmaceuticals by Reversed-Phase High-Performance Liquid Chromatography

    Precolumn derivatization with the reagent o-phthalic aldehyde/N-acetyl-L-cysteine (OPA/NAC) was used for the determination of amino acid enantiomers by reversed-phase high-performance liquid chromatography. Th...

    M. G. Chernobrovkin, I. A. Anan'eva, E. N. Shapovalova… in Journal of Analytical Chemistry (2004)

  11. No Access

    Article

    Separation of β-Blockers on Chiral Stationary Phases Based on the Teicoplanin Macrocyclic Antibiotic

    I. A. Anan'eva, E. N. Shapovalova, O. A. Shpigun… in Journal of Analytical Chemistry (2003)

  12. No Access

    Article

    Chromatographic Retention and Enantioseparation of Amino Acid Derivatives on Aminated β-Cyclodextrin as Functions of the Hydrophobicity of Adsorbates

    The retention and separation of optical isomers of amino acid derivatives on aminated β-cyclodextrin was studied. The pH dependence of the distribution coefficients of these derivatives in the octanol–water sy...

    I. A. Anan'eva, E. N. Myshak, E. N. Shapovalova… in Journal of Analytical Chemistry (2003)

  13. No Access

    Article

    Use of Unmodified and Aminated β-Cyclodextrins for the Separation of Enantiomers of Amino Acid Derivatives by High-Performance Liquid Chromatography

    The separation of enantiomers of amino acid derivatives with modifiers of different structures on β-cyclodextrin and aminated β-cyclodextrin by reversed-phase high-performance liquid chromatography was studied...

    I. A. Anan'eva, E. N. Shapovalova, S. A. Lopatin… in Journal of Analytical Chemistry (2002)