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Tandem LA–LIBS Coupled to ICP-MS for Comprehensive Analysis of Tumor SamplesThis method demonstrates the excellent suitability of a multimodal approach that combines LA-ICP-MS with LIBS for the analysis of tumor samples, particularly when the standalone techniques cannot detect all the elements of interest.
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Tandem LA–LIBS Coupled to ICP-MS for Comprehensive Analysis of Tumor SamplesThis method demonstrates the excellent suitability of a multimodal approach that combines LA-ICP-MS with LIBS for the analysis of tumor samples, particularly when the standalone techniques cannot detect all the elements of interest.
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Determination of Rare Earth Elements in Geological and Agricultural Samples by ICP-OESThis method demonstrates that ICP-OES is a suitable alternative to ICP-MS for the determination of rare earth elements in geological and agricultural samples
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Gas Chromatography–Mass Spectrometry Characterization of Vegetable Oil–Derived Potent Antimicrobial AgentsUnder a suitable thermal oxidation regime, vegetable oils yield a mixture of volatile and semivolatile organics that exhibit very high antimicrobial activities against a variety of microbial species. Volatile and semivolatile products were characterized with GC–MS using electron ionization and chemical ionization. The thermal oxidation of vegetable oils resulted in the formation of an array of shortand medium-chain acids, aldehydes, and ketones that act synergistically to yield a potent antimicrobial disinfectant.
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Gas Chromatography–Mass Spectrometry Characterization of Vegetable Oil–Derived Potent Antimicrobial AgentsUnder a suitable thermal oxidation regime, vegetable oils yield a mixture of volatile and semivolatile organics that exhibit very high antimicrobial activities against a variety of microbial species. Volatile and semivolatile products were characterized with GC–MS using electron ionization and chemical ionization. The thermal oxidation of vegetable oils resulted in the formation of an array of shortand medium-chain acids, aldehydes, and ketones that act synergistically to yield a potent antimicrobial disinfectant.
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Mass Spectrometry Techniques to Unravel the Heterogeneity of GlycoproteinsSince glycans are responsible for bioactivity, solubility, immunogenicity, and clearance rate from circulation, it is vital to have a detailed map of glycans in therapeutic glycoproteins. Detailed glycoprotein structural analysis must be able to identify the peptide sequence where the glycans are attached as well as the structure of the glycan portion, including oligosaccharide sequence and glycosyl linkages. This article details methods for mass spectrometry experiments on both released glycans (“glycomics”), as well as on intact glycopeptides (“glycoproteomics”) using electron transfer dissociation, high-energy collision dissociation, and collisioninduced dissociation fragmentation pathways, which are needed to fully elucidate the structure of glycoproteins.
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Analyzing Gunshot Residues with Raman Microscopy v2Our inVia confocal Raman microscope helps forensic scientists overcome the difficulty of analyzing gunshot residues created by the introduction of lead-free ammunition.
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Cl & S in Waste Oil and Used OilThis application note demonstrates the analysis of chlorine and sulfur in oil as it relates to waste oil and used oil using the Rigaku NEX QC+ EDXRF spectrometer.
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Disinfection of Tetraselmis sp. with UV LED ApplicationAnalyzing the effect of UV LED modules on disinfecting ballast water using UV–vis spectroscopy.
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Robust Trace Metals Analysis for Li-ion BatteriesBetter sample prep leads to better analysis; discover the keys to a better battery digest, leading to better analysis, for samples from R&D testing to quality control.
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Determination of Rare Earth Elements in Geological and Agricultural Samples by ICP-OESThis method demonstrates that ICP-OES is a suitable alternative to ICP-MS for the determination of rare earth elements in geological and agricultural samples
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Why Is My Application’s Audit Trail Rubbish?It has been 20 years since 21 CFR 11 came into effect. And with increased emphasis on data integrity, an audit trail is essential for spectroscopy software. Why then do many audit trails fail to meet regulatory requirements?
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2D COS of Temperature-Dependent Raman Spectra of Amorphous, Nonoriented Polyethylene Terephthalate to Separate Molecular Conformational Changes from True CrystallizationBecause of the structural use of polymers, it is important to understand the origin of their strength, elongation to break, elasticity, flexibility, and so on. It is in the very low frequency region (the so called “terahertz” range) where it is believed that the real indicators for crystallinity appear.
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The Carbonyl Group, Part V: Carboxylates—Coming CleanCarboxylates are made by reacting carboxylic acids with strong bases such as inorganic hydroxides. Carboxylates contain two unique carbon–oxygen “bond and half” linkages that coordinate with a metal ion to give two strong infrared peaks, which make them easy to see.
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Surface-Enhanced Raman Spectroscopy: From Concept to Practical ApplicationIn the last decade, numerous SERS substrates have been developed, but it is difficult to compare and validate their plasmonic performance. In this overview, the authors discuss the three physical parameters of any new SERS platform that must be measured-morphological characterization, optical scattering (far-field response), and near-field properties-and future prospects for the development of new SERS platforms.
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Current Trends in Polymer Raman Spectroscopy: Quality, Efficiency, and SafetyRaman-based polymer process monitoring enables rapid optimization of polymerization conditions, improves process efficiency, and ensures optimal final form.
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Towards Safer Cannabis Consumer Products: The Importance of testing for Heavy MetalsIn this podcast we will cover how heavy metal contamination can occur during the entirety of the cannabis life cycle including: • Cultivation and harvesting • Extraction and processing • Testing and measurement • Finished Product We will also explore the impact that this type of contamination can have on consumer safety and how it is regulated.
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Advances in Stress Measurement with Portable X-Ray Diffraction: Uncertainties in Normal and Shear Stress Determination on Mild Steel PipeTo test the accuracy of residual stress measurements made with portable X-ray devices, measured normal and shear stresses were compared with the applied (true) values for accuracy assessment. From those results, practical measurement and analysis protocols for precise and accurate stress measurements are proposed.
Latest:
Advances in Stress Measurement with Portable X-Ray Diffraction: Uncertainties in Normal and Shear Stress Determination on Mild Steel PipeTo test the accuracy of residual stress measurements made with portable X-ray devices, measured normal and shear stresses were compared with the applied (true) values for accuracy assessment. From those results, practical measurement and analysis protocols for precise and accurate stress measurements are proposed.
Latest:
Advances in Stress Measurement with Portable X-Ray Diffraction: Uncertainties in Normal and Shear Stress Determination on Mild Steel PipeTo test the accuracy of residual stress measurements made with portable X-ray devices, measured normal and shear stresses were compared with the applied (true) values for accuracy assessment. From those results, practical measurement and analysis protocols for precise and accurate stress measurements are proposed.
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Small-Angle X-ray Scattering from Lamellar StructuresLamellar structures, which are common in many polymeric materials and biological tissues, can diffract X-rays and give rise to reflections at small scattering angles. Analysis of these scattering features can be used investigate the deformation of lamellar structures at the microstructural length.
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The miniDOAS: Low Cost, High Performance Contactless Ammonia MeasurementsKnowledge of atmospheric ammonia concentrations is important, but ammonia is difficult to measure. We report here on the development of a low-cost ammonia measuring differential optical absorption spectroscopy (DOAS) instrument, based on a small sized and low priced spectrograph.
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New Approach for ICP-OES Environmental Analysis - App NoteNew ICP-OES plasma viewing technique doubles the sensitivity in the analysis of environmental samples from water, wastewater, soils, and sludges on the SPECTROGREEN.
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New York–New Jersey Society for Applied Spectroscopy Celebrates Student Award WinnersOn July 13, 2019, from 5 pm to 8 pm, the New York–New Jersey Society for Applied Spectroscopy (SAS) organization celebrated their student award winners at its annual banquet, held at Rutgers State University in the new Chemistry and Chemical Biology building in Piscataway, New Jersey. This year the group celebrated the accomplishments of three winners.
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Combining Spectroscopy with Microscopy for Advancing the Analysis of Forensically Relevant TracesForensic traces are physical remnants of past events that provide critical information for criminal and civil investigations and adjudications. The scientific examination of traces is an incredibly valuable tool for forensic investigations, because the skilled interpretation of traces yields factual answers to a range of pertinent questions.
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The Use of Raman Spectroscopy for the Identification of Forensically Relevant Body Fluid StainsThis study reveals the ability of Raman spectroscopy to identify some forensically relevant body fluids, both
Latest:
The Use of Raman Spectroscopy for the Identification of Forensically Relevant Body Fluid StainsThis study reveals the ability of Raman spectroscopy to identify some forensically relevant body fluids, both
