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Lanthanide ion-based metal-organic framework as an effective tri-mode nanoprobe for alcoholic content detection.
Mikrochim Acta
January 2025
School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China.
A lanthanide ion-based metal-organic framework (Eu-TATAB nanorods) was designed and synthesized as an effective tri-mode nanoprobe for sensitive and portable detection of ethanol content in a water-ethanol mixture. The assay was based on the responsive properties of Eu-TATAB nanorods to ethanol stimulus and their adaptive encapsulation capability towards optically active lanthanides. With the addition of ethanol to the Eu-TATAB nanorods, the structure was destroyed, resulting in a decrease in luminescence, electrochemiluminescence, and ultraviolet-visible spectrophotometric signals by perturbing energy transfer in the Eu-TATAB nanorods.
View Article and Find Full Text PDFNovel Spectrophotometric Method for Robust Detection of Trace Copper and Cobalt in High-Concentration Zinc Solution.
Molecules
December 2024
Hunan Province Key Laboratory of Southwest, Hunan Academician Workstation, School of Information Science and Engineering, Shaoyang University, Shaoyang 422000, China.
In the purification process of zinc hydrometallurgy, the spectra of copper and cobalt seriously overlap in the whole band and are interfered with by the spectra of zinc and nickel, which seriously affects the detection results of copper and cobalt in zinc solutions. Aiming to address the problems of low resolution, serious overlap, and narrow characteristic wavelengths, a novel spectrophotometric method for the robust detection of trace copper and cobalt is proposed. First, the Haar, Db4, Coif3, and Sym3 wavelets are used to carry out the second-order continuous wavelet transform on the spectral signals of copper and cobalt, which improves the resolution of copper and cobalt and eliminates the background interference caused by matrix zinc signals and reagents.
View Article and Find Full Text PDFRapid diagnosis and severity scale of post-COVID condition using advanced spectroscopy.
Spectrochim Acta A Mol Biomol Spectrosc
March 2025
Department of Organic Chemistry, Center for Research in Biological Chemistry and Molecular Materials, Santiago de Compostela University, CIQUS, Spain. Electronic address:
The COVID-19 pandemic has resulted in a persistent health challenge known as Post-COVID Condition (PCC), characterized by symptoms lasting at least three months after the initial SARS-CoV-2 infection and potentially persisting for several years. While studies on PCC using lipidomics and proteomics have been conducted, these methods are costly and time-consuming. The comprehensive analysis of UV-VIS-NIR-MIR spectroscopy is explored here as an alternative for the rapid and cheap diagnosis and quantification of the severity of PCC.
View Article and Find Full Text PDFComparative validation of UV-spectrophotometry and RP-HPLC methods for cefixime and moxifloxacin analysis.
Anal Biochem
February 2025
School of Pharmacy, RK University, Gujarat, India. Electronic address:
Aim: This study presents the development and validation of UV-spectrophotometry and RP-HPLC methods for the simultaneous quantification of Cefixime Trihydrate (CEFI) and Moxifloxacin Hydrochloride (MOXI) in pharmaceutical formulations.
Methodology: Two UV-spectrophotometric methods, including the absorbance ratio (Q-Absorption) and First Order Derivative Spectroscopy, were developed and validated for their linearity, precision, accuracy, and sensitivity. Additionally, a robust RP-HPLC method using a C18 column and optimized mobile phase was employed for efficient separation and simultaneous estimation of CEFI and MOXI.
A Spectrophotometric Method to Determine Minimal Erythema Dose for Ultraviolet Radiation in Human Skin.
Biomedicines
November 2024
Department of Molecular Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea.
: Ultraviolet radiation (UVR) induces oxidative stress in the skin by generating reactive oxygen species (ROS), which can lead to inflammatory conditions including erythema (a sign of sunburn). This clinical study aims to develop an instrumental evaluation method to determine the minimal erythema dose (MED) for UVR. : Fourteen human subjects aged 27 to 57 years (48.
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