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Absorption Spectrophotometry

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Sanchez F Rojas – One of the best experts on this subject based on the ideXlab platform.

  • recent applications in derivative ultraviolet visible Absorption Spectrophotometry 2009 2011 a review
    Microchemical Journal, 2013
    Co-Authors: Bosch C Ojeda, Sanchez F Rojas

    Abstract:

    Abstract Derivative Spectrophotometry (DS) has been introduced for the resolution of overlapping peaks. DS method has been widely used to enhance the signal and resolve the overlapped peak-signals due to its advantages in differentiating closely adjacent peaks, and identifying weak peaks obscured by sharp peaks. In this work, the analytical applications of derivative UV/VIS region Absorption Spectrophotometry produced in the last 3 years (since 2009) are reviewed.

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  • recent developments in derivative ultraviolet visible Absorption Spectrophotometry
    Analytica Chimica Acta, 2004
    Co-Authors: Bosch C Ojeda, Sanchez F Rojas

    Abstract:

    Abstract Derivative Spectrophotometry is an analytical technique of great utility for extracting both qualitative and quantitative information from spectra composed of unresolved bands, and for eliminating the effect of baseline shifts and baseline tilts. It consists of calculating and plotting one of the mathematical derivatives of a spectral curve. Thus, the information content of a spectrum is presented in a potentially more useful form, offering a convenient solution to a number of analytical problems, such as resolution of multi-component systems, removal of sample turbidity, matrix background and enhancement of spectral details. Derivative Spectrophotometry is now a reasonably priced standard feature of modern micro-computerized UV/Vis Spectrophotometry. The instrumental development and analytical applications of derivative UV/Vis regions Absorption Spectrophotometry produced in the last 10 years (since 1994) are reviewed.

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Bosch C Ojeda – One of the best experts on this subject based on the ideXlab platform.

  • recent applications in derivative ultraviolet visible Absorption Spectrophotometry 2009 2011 a review
    Microchemical Journal, 2013
    Co-Authors: Bosch C Ojeda, Sanchez F Rojas

    Abstract:

    Abstract Derivative Spectrophotometry (DS) has been introduced for the resolution of overlapping peaks. DS method has been widely used to enhance the signal and resolve the overlapped peak-signals due to its advantages in differentiating closely adjacent peaks, and identifying weak peaks obscured by sharp peaks. In this work, the analytical applications of derivative UV/VIS region Absorption Spectrophotometry produced in the last 3 years (since 2009) are reviewed.

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  • recent developments in derivative ultraviolet visible Absorption Spectrophotometry
    Analytica Chimica Acta, 2004
    Co-Authors: Bosch C Ojeda, Sanchez F Rojas

    Abstract:

    Abstract Derivative Spectrophotometry is an analytical technique of great utility for extracting both qualitative and quantitative information from spectra composed of unresolved bands, and for eliminating the effect of baseline shifts and baseline tilts. It consists of calculating and plotting one of the mathematical derivatives of a spectral curve. Thus, the information content of a spectrum is presented in a potentially more useful form, offering a convenient solution to a number of analytical problems, such as resolution of multi-component systems, removal of sample turbidity, matrix background and enhancement of spectral details. Derivative Spectrophotometry is now a reasonably priced standard feature of modern micro-computerized UV/Vis Spectrophotometry. The instrumental development and analytical applications of derivative UV/Vis regions Absorption Spectrophotometry produced in the last 10 years (since 1994) are reviewed.

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Liu Zhi-xue – One of the best experts on this subject based on the ideXlab platform.

  • Uncertainty evaluation for determination of nickel in water by atomic Absorption Spectrophotometry
    Occupation and Health, 2013
    Co-Authors: Liu Zhi-xue

    Abstract:

    [Objective]To evaluate the uncertainty in determination of nickel content in water by flameless atomic Absorption Spectrophotometry.[Methods]The flameless atomic Absorption Spectrophotometry from Standard Examination Methods for Drinking Water-Metal parameters(GB/T 5750 6-2006) was applied to measure the nickel content in water.[Results]The nickel content in drinking water was 20.5 μg/L,and the uncertainty was 0.6 μg/L(k=2).The main sources of uncertainty were preparation of standard solution and repetitive determination of samples.[Conclusion]The thought of this evaluation is clear,which can evaluate the relative standard uncertainty caused by standard solution,working curve,repetitive determination of samples and instrument,and it has strong practicality.

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