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Interacting Characteristics of Chrysene with Free DNA in vitroDNA effectively removes chrysene from contaminated water through intercalation, as confirmed by various analytical methods, offering a potential novel approach for chrysene elimination in water pollution.
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Handheld Laser-Induced Breakdown Spectroscopy (hLIBS): A Valuable Tool for Terrestrial and Extraterrestrial Recognition of Meteorites in the FieldThe fast data acquisition and minimal sample preparation of handheld LIBS devices make them very useful for geochemical mapping, resource prospecting, sample selection, and hazard identification.
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Review and Prospect: Applications of Exponential Signals with Machine Learning in Nuclear Magnetic ResonanceA review of exponential signal models with machine learning in nuclear magnetic resonance (NMR) spectroscopy is discussed here.
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Real-World Application of Open-Path UV-DOAS, TDL, and FT-IR Spectroscopy for Air Quality Monitoring at Industrial FacilitiesThe implementation of 120 open-path spectroscopy analyzers at oil refineries has taught us lessons about compound identification, target species detectability, interferences, and data management, which can help spectroscopists generate more accurate data when monitoring air quality.
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ICP-MS: Key Steps to Control Contamination and Achieve Low Detection LimitsInductively coupled plasma mass spectrometry (ICP-MS) instruments can perform low-level elemental analysis in a wide range of sample types, from high-purity chemicals to high matrix digests. But achieving consistently low detection limits requires good control of elemental contamination, as well as spectral interferences. A clean working area, careful selection of reagents, and good sample handling techniques are key to successful trace and ultratrace elemental analysis. In this article, we provide five practical tips for controlling contaminants and minimizing detection limits.
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A Facile Synthesis of Tannic Acid–Protected Copper Nanoclusters and the Sensitive Fluorescence Detection of Nitrite Ion Under Mild ConditionsNitrite poses health risks. This study evaluates the results of using tannic acid- protected fluorescence copper nanoclusters (TA-CuNCs) to detect nitrite in food.
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Time-resolved Fluorescence Spectroscopy Study of Energy Transfer Dynamics in Phycobilisome of Thermophilic Cyanobacterium Thermosynechococcus vulcanus NIES 2134Time-resolved fluorescence spectroscopy reveals much about the structure-induced energy transfer mechanisms of phycobilisomes, the light-harvesting antenna in cyanobacteria.
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Lignocellulose Determination and Categorization Analysis for Biofuel Pellets Based on FT-IR SpectraFT-IR offers an alternative method for the quantification and classification of lignocellulose in biofuel pellets, based on determination of cellulose, hemicellulose, and lignin content. The IR spectroscopic evaluation presented here provides an understanding of the pretreatment and storage of biofuel pellets.
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The Detection of Biomarkers and Cocaine in Fingernails Using Attenuated Total Reflectance Fourier Transform Infrared SpectroscopyATR-FT-IR spectroscopy can provide rapid and portable measurements in forensic applications, demonstrating its ability to rapidly detect biomarkers and the presence of cocaine in fingernails.
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Atline Analysis of Commercial Graphene Products with Raman SpectroscopyGraphene exhibits special properties, such as high strength and high electrical and thermal conductivity and as such is highly desirable for key electronic components. A new Raman spectroscopy sampling technique has been applied to the characterization of batches of graphene that provides a simple, at-line method for obtaining key product data.
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A Sampling Flexibility for Raman SpectroscopyKey Issues: Sampling flexibility of Raman enables in-process analysis of solids, turbid media, liquids, and gases Large volumetric Raman provide representative sampling of heterogenous solids
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The Enhancement Effects of Forsythoside E on Serum Albumin Fluorescence Under Simulated Physiological ConditionsThis study examines the fluorescence enhancement effects of forsythoside E, one of metabolites of Forsythia suspensa, on human serum albumin (HSA) and bovine serum albumin (BSA) under simulated physiological conditions.
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Determining Nitrophenol Isomers Using Raman SpectroscopyIn this study, the nitrophenol isomers, in solid and liquid phases, were analyzed using Raman spectroscopy, laying the groundwork for determining nitrophenol isomers in environmental monitoring with this technique.
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An Archaeometric Investigation into the Former Cataract House Hotel via Elemental AnalysisPortable X-ray fluorescence was used to analyze the archaeological remains of an Underground Railroad station to gain a clearer understanding of the construction phases it underwent during the 19th century.
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Raman Spectroscopy as a Tool for Rapid Feedback of Perovskite Growth Crystallinity and CompositionPerovskites are known to be useful for fabrication of solar cells, and their crystalline structure plays an important role in their electronic properties. Here, we show how Raman analysis is able to confirm the presence of the required crystalline phase for solar cell production.
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Analysis of Transdermal Patch Layers via Confocal Raman MicroscopyAs an alternative drug delivery route, transdermal patches control the amount of medication a patient receives. With confocal Raman microscopy it is possible to create a Raman 3D map and thus visualize and analyze the layers of a transdermal patch without damaging it, allowing for quality control and stability measurements.
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Time-resolved Fluorescence Spectroscopy Study of Energy Transfer Dynamics in Phycobilisome of Thermophilic Cyanobacterium Thermosynechococcus vulcanus NIES 2134Time-resolved fluorescence spectroscopy reveals much about the structure-induced energy transfer mechanisms of phycobilisomes, the light-harvesting antenna in cyanobacteria.
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Determination of Toxic Elements in Food by ICP-MS Using AOAC Method 2015.01Is ICP-MS instrumentation ready to handle the requirements of AOAC Method 2015.01 for the determination of toxic elements in food—including dealing with interferences? We ran this study to check.
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Leading by Example: A Retrospective on the Career of Ulrich J. KrullA celebration of the 36-year career of Ulrich J. Krull, on the occasion of his retirement earlier this year.
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Characterization of GeSbSe Thin Films Synthesized by the Conventional Melt-Quenching MethodSpectroscopic ellipsometry, correlated with UV-vis-NIR spectroscopy, is used to determine the optical constants of thin films, such as in GexSb40-xSe60 chalcogenide glass.
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A Sampling Flexibility for Raman SpectroscopyKey Issues: Sampling flexibility of Raman enables in-process analysis of solids, turbid media, liquids, and gases Large volumetric Raman provide representative sampling of heterogenous solids
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Efficient Discrimination of Some Moss Species by Fourier Transform Infrared Spectroscopy and ChemometricsIn combination with attenuated total reflectance (ATR), Fourier transform infrared (FT-IR) spectroscopy can be used to classify different moss species.
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Cold-Hot Nature Identification of Chinese Medicine Based on an Ultraviolet Chemical FingerprintA model has been developed to predict the “cold” or “hot” nature of Chinese medicines based on UV spectral data.
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Identification of Different Dairy Products Using Raman Spectroscopy Combined with Fused Lasso Distributionally Robust Logistic RegressionTo improve the robustness and accuracy of logistic regression identification method, a new Raman spectroscopy identification method was proposed that combines a distributionally robust optimization technique and fused lasso technique with logistic regression. Then, Raman spectroscopy was used to analyze two types of dairy products that were collected for anti-jamming identification testing to verify the effectiveness of the new method.
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Understanding the Limits of the Bouguer-Beer-Lambert LawThe Bouguer-Beer-Lambert law has its limitations and it doesn't always properly reflect the physical phenomena at play. This article examines the law's limitations.
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Identifying Freshness of Shrimp Following Refrigeration Using Near-Infrared Hyperspectral ImagingVarious chemometric approaches, including four discriminant models (ELM, TLBO–ELM, KELM, and TLBO–KELM), were used to detect shrimp freshness based on near-infrared hyperspectral imaging.
