The Experts below are selected from a list of 15 Experts worldwide ranked by ideXlab platform

L. P. Eksperiandova - One of the best experts on this subject based on the ideXlab platform.

  • Analysis of waste water by x‐ray fluorescence spectrometry
    X-Ray Spectrometry, 2002
    Co-Authors: L. P. Eksperiandova, A. B. Blank, Ya. N. Makarovskaya
    Abstract:

    Methods of specimen preparation for the x-ray fluorescence analysis of water are described. For direct determination of impurities in waste water samples, quasi-solid specimens based on gelatin (agar) are proposed. Such specimens may also be used after extractive enrichment of impurities and their re-extraction into the Aqueous phase. For organic specimens, those in the form of organogels or thin polymer films can be obtained directly. For group impurity concentration it is proposed to use low-temperature directed crystallization of water with subsequent obtaining of glassy saccharose-based specimens from Aqueous Concentrates. The techniques developed were applied to determine Ag, As, Bi, Cd, Co, Cu, Fe, Ga, Ni, Pb, Se and Zn impurities in waste waters. Copyright © 2002 John Wiley & Sons, Ltd.

  • X-Ray analysis of Aqueous Concentrates using organic glassy specimens
    Fresenius' Journal of Analytical Chemistry, 1998
    Co-Authors: L. P. Eksperiandova, A. B. Blank, I. I. Fokina
    Abstract:

    A simple and accessible method for the production of glassy specimens from Aqueous Concentrates based on saccharose is proposed. During the process of such a specimen preparation an additional concentration of impurities takes place. These saccharose specimens were used for the X-ray fluorescence determination of Se in waste water with crystallization preconcentration.

A. B. Blank - One of the best experts on this subject based on the ideXlab platform.

  • Analysis of waste water by x‐ray fluorescence spectrometry
    X-Ray Spectrometry, 2002
    Co-Authors: L. P. Eksperiandova, A. B. Blank, Ya. N. Makarovskaya
    Abstract:

    Methods of specimen preparation for the x-ray fluorescence analysis of water are described. For direct determination of impurities in waste water samples, quasi-solid specimens based on gelatin (agar) are proposed. Such specimens may also be used after extractive enrichment of impurities and their re-extraction into the Aqueous phase. For organic specimens, those in the form of organogels or thin polymer films can be obtained directly. For group impurity concentration it is proposed to use low-temperature directed crystallization of water with subsequent obtaining of glassy saccharose-based specimens from Aqueous Concentrates. The techniques developed were applied to determine Ag, As, Bi, Cd, Co, Cu, Fe, Ga, Ni, Pb, Se and Zn impurities in waste waters. Copyright © 2002 John Wiley & Sons, Ltd.

  • X-Ray analysis of Aqueous Concentrates using organic glassy specimens
    Fresenius' Journal of Analytical Chemistry, 1998
    Co-Authors: L. P. Eksperiandova, A. B. Blank, I. I. Fokina
    Abstract:

    A simple and accessible method for the production of glassy specimens from Aqueous Concentrates based on saccharose is proposed. During the process of such a specimen preparation an additional concentration of impurities takes place. These saccharose specimens were used for the X-ray fluorescence determination of Se in waste water with crystallization preconcentration.

I. I. Fokina - One of the best experts on this subject based on the ideXlab platform.

Fernando Lalaguna - One of the best experts on this subject based on the ideXlab platform.

  • Purification of fresh cassava root polyphenols by solid-phase extraction with Amberlite XAD-8 resin
    Journal of Chromatography A, 1993
    Co-Authors: Fernando Lalaguna
    Abstract:

    Abstract To obtain the polyphenolic fraction of fresh cassava root in a form amenable to analysis by thin-layer chromatography (TLC) and absorption spectroscopy, Aqueous Concentrates of delipidated extracts were loaded on 0.3 g (dry mass) of Amberlite XAD-8 resin, non-polyphenolics were washed off with water and polyphenols eluted with methanol-water (7:3, v/v). The resolution and purity of polyphenols were ascertained with four TLC systems. In addition, the system exhibits complete recovery and is reproducible, and the resin withstands repeated use without lost of performance, which makes it an efficient method.

Ya. N. Makarovskaya - One of the best experts on this subject based on the ideXlab platform.

  • Analysis of waste water by x‐ray fluorescence spectrometry
    X-Ray Spectrometry, 2002
    Co-Authors: L. P. Eksperiandova, A. B. Blank, Ya. N. Makarovskaya
    Abstract:

    Methods of specimen preparation for the x-ray fluorescence analysis of water are described. For direct determination of impurities in waste water samples, quasi-solid specimens based on gelatin (agar) are proposed. Such specimens may also be used after extractive enrichment of impurities and their re-extraction into the Aqueous phase. For organic specimens, those in the form of organogels or thin polymer films can be obtained directly. For group impurity concentration it is proposed to use low-temperature directed crystallization of water with subsequent obtaining of glassy saccharose-based specimens from Aqueous Concentrates. The techniques developed were applied to determine Ag, As, Bi, Cd, Co, Cu, Fe, Ga, Ni, Pb, Se and Zn impurities in waste waters. Copyright © 2002 John Wiley & Sons, Ltd.