The Experts below are selected from a list of 30708 Experts worldwide ranked by ideXlab platform
Sanchez F Rojas - One of the best experts on this subject based on the ideXlab platform.
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recent applications in derivative ultraviolet visible Absorption Spectrophotometry 2009 2011 a review
Microchemical Journal, 2013Co-Authors: Bosch C Ojeda, Sanchez F RojasAbstract: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, 2004Co-Authors: Bosch C Ojeda, Sanchez F RojasAbstract: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.
Bosch C Ojeda - One of the best experts on this subject based on the ideXlab platform.
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recent applications in derivative ultraviolet visible Absorption Spectrophotometry 2009 2011 a review
Microchemical Journal, 2013Co-Authors: Bosch C Ojeda, Sanchez F RojasAbstract: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, 2004Co-Authors: Bosch C Ojeda, Sanchez F RojasAbstract: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.
Liu Zhi-xue - One of the best experts on this subject based on the ideXlab platform.
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Uncertainty evaluation for determination of nickel in water by atomic Absorption Spectrophotometry
Occupation and Health, 2013Co-Authors: Liu Zhi-xueAbstract:[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.
Ghasem Hesam - One of the best experts on this subject based on the ideXlab platform.
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a new magnetic tailor made polymer for separation and trace determination of cadmium ions by flame atomic Absorption Spectrophotometry
RSC Advances, 2016Co-Authors: Vahid Zarezade, Mohammad Behbahani, Fariborz Omidi, Hamid Sadeghi Abandansari, Ghasem HesamAbstract:Magnetic ion imprinted polymers have been prepared and applied for the selective extraction and trace monitoring of cadmium ions in food samples. The characterization of synthesized sorbent was carried out by Fourier transform infrared spectroscopy, elemental analysis, scanning electron microscopy, X-ray diffraction, and thermal analysis. The separation of magnetic nanoparticles from the extraction solution could be easily carried out by applying an external magnetic field. Flame atomic Absorption Spectrophotometry was used for determination of the extracted target ion. The detection limit and linear dynamic range for the coupling of the proposed sample preparation method under the optimized conditions with FAAS were 0.02 μg L−1 (based on 3Sb/m) and 0.1–500 μg L−1, respectively. Finally, the applicability of the coupling of the solid phase extraction method with flame atomic Absorption Spectrophotometry was investigated by extraction and monitoring of cadmium ions in food samples. Therefore, the introduced technique can be applied by food scientists as a reliable pre-concentration stage before determination of cadmium by flame atomic Absorption Spectrophotometry.
Vahid Zarezade - One of the best experts on this subject based on the ideXlab platform.
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a new magnetic tailor made polymer for separation and trace determination of cadmium ions by flame atomic Absorption Spectrophotometry
RSC Advances, 2016Co-Authors: Vahid Zarezade, Mohammad Behbahani, Fariborz Omidi, Hamid Sadeghi Abandansari, Ghasem HesamAbstract:Magnetic ion imprinted polymers have been prepared and applied for the selective extraction and trace monitoring of cadmium ions in food samples. The characterization of synthesized sorbent was carried out by Fourier transform infrared spectroscopy, elemental analysis, scanning electron microscopy, X-ray diffraction, and thermal analysis. The separation of magnetic nanoparticles from the extraction solution could be easily carried out by applying an external magnetic field. Flame atomic Absorption Spectrophotometry was used for determination of the extracted target ion. The detection limit and linear dynamic range for the coupling of the proposed sample preparation method under the optimized conditions with FAAS were 0.02 μg L−1 (based on 3Sb/m) and 0.1–500 μg L−1, respectively. Finally, the applicability of the coupling of the solid phase extraction method with flame atomic Absorption Spectrophotometry was investigated by extraction and monitoring of cadmium ions in food samples. Therefore, the introduced technique can be applied by food scientists as a reliable pre-concentration stage before determination of cadmium by flame atomic Absorption Spectrophotometry.