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The Hyphenation of HILIC, Reversed-Phase HPLC, and Atmospheric-Pressure-Ionization MSHydrophilic interaction liquid chromatography (HILIC) and reversed-phase high performance liquid chromatography (HPLC) are complementary techniques in the separation of organic molecules with a broad band of polarity. Both separation variants can be operated easily with volatile and water-miscible solvents (for example, ammonium acetate aqueous solution and acetonitrile). Thus, a hyphenation of both liquid chromatographic techniques with atmospheric pressure ionization (API) and mass spectrometry (MS) seems to be a consequent step.
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Mid-infrared Microspectroscopy of Difficult Samples Using Near-Field Photothermal Microspectroscopy (PTMS) [PDF]The authors discuss progress in near-field IR microspectroscopy using a photothermal probe and show how it can be applied to the spectroscopic characterization of real-world samples.
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Nontargeted, Discovery-Based Profiling of the Yeast Metabolome Using QTOF LC–MS and LC–MS-MSA discovery-based, untargeted metabolomics analysis of hundreds of yeast metabolites under robust, controlled extraction conditions followed by identification is described.
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Using ICP-OES to Improve Lithium-Ion Battery Performance and Reduce WasteICP-OES can accurately measure the elemental ratios necessary to optimize battery performance and improve recycling efforts so that battery recoveries are optimized. The authors explore how ICP-OES can help manufacturers meet the increasing performance demands required for lithium-ion batteries.
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EAS 2018: Analytical Solutions to the World's ProblemsThe theme of the 2018 Eastern Analytical Symposium and Exposition is “Analytical Solutions to the World’s Problems.” The EAS has always been about problem solving. This year, we focus on problems that affect the world.
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Pesticide and Mycotoxin Analysis: Mastering the Complexity of the Cannabis MatrixThe method described here allows for the simultaneous analysis of 47 pesticides and five mycotoxins in cannabis in one simple QuEChERS procedure. This simple method is designed for implementation in start-up laboratories and in established laboratories that wish to streamline their sample preparation process, decrease solvent usage, and obtain accurate and fast results.
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Interaction of Dichloromethane Solvent with n-Alkylamines Analyzed by Electron Ionization GC–MSThe analysis of amines by gas chromatograph ;mass spectrometry (GC–MS) using electron ionization (EI) has always been a challenge
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Toward Quantitative Imaging Mass SpectrometryThe main limitations of quantification using MALDI imaging are discussed and the different approaches used for quantitative measurement in MSI are evaluated.
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Process Spectroscopy Anchors the 31st FACSS Conference (PDF)Through symposia, posters, and workshops, representatives from industry and academia addressed a broad range of technology and implementation issues that are beginning to change the landscape of modern spectroscopy.
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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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XPS Surface Characterization of Disposable Laboratory Gloves and the Transfer of Glove Components to Other SurfacesX-ray photoelectron spectroscopy (XPS) can be used to determine the contaminants present on laboratory gloves and to evaluate the type and amount of contamination transfer from gloves to other surfaces.
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Advanced Analysis of Allergens in Foods: LC–MS-MS Methodologies and Future InsightsAn update on the sample preparation and LC–MS-MS tools available for allergen detection, as well advantages of those techniques.
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ICP-MS with Autodilution and Autocalibration for Implementing the New USP Chapters on Elemental ImpuritiesThis article describes the use of an in-line, autodilution, and autocalibration sample delivery system coupled to an inductively coupled plasma–mass spectrometry system to analyze a group of over-the-counter pharmaceutical products.
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ICP-MS with Autodilution and Autocalibration for Implementing the New USP Chapters on Elemental ImpuritiesThis article describes the use of an in-line, autodilution, and autocalibration sample delivery system coupled to an inductively coupled plasma–mass spectrometry system to analyze a group of over-the-counter pharmaceutical products.
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Ultratrace Aluminum Analysis of Nutritional Intravenous Solution Components in 1-Propanol Using GFAAS (PDF)This article describes how ultratrace aluminum analysis of two nutritional intravenous solution components with limited water solubility can be performed by graphite furnace atomic absorption spectroscopy (GFAAS) with dissolution in 1-propanol.
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XPS Surface Characterization of Disposable Laboratory Gloves and the Transfer of Glove Components to Other SurfacesX-ray photoelectron spectroscopy (XPS) can be used to determine the contaminants present on laboratory gloves and to evaluate the type and amount of contamination transfer from gloves to other surfaces.
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Advanced Analysis of Allergens in Foods: LC–MS-MS Methodologies and Future InsightsAn update on the sample preparation and LC–MS-MS tools available for allergen detection, as well advantages of those techniques.
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Advanced Analysis of Allergens in Foods: LC–MS-MS Methodologies and Future InsightsAn update on the sample preparation and LC–MS-MS tools available for allergen detection, as well advantages of those techniques.
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Direct Insertion Probe – Mass Spectrometry (DIP-MS) in the Characterization of Opportunity CrudesDIP–MS is a fast and easy tool that can identify classes of compounds in opportunity crudes (heavy and ultraheavy crude oils, asphaltenes, and tar sands) in the field, without prior separation or treatment. It may enable fast screening of real samples to make a rough evaluation of the potential of reservoirs and oil fields.
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Contamination Control During Sample Preparation for Trace Element Analysis of Electronic Cigarette Aerosol with Inductively Coupled Plasma-Mass Spectrometry, Part 2Minimizing sample preparation issues requires users to consider method LODs as well as high purity polymer materials for sample collection and preparation. Here, we examine proper personal analytical practices one can take to avoid environmental contamination.
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Strategies for Achieving the Lowest Possible Detection Limits in ICP-MSA laminar flow box for sampling is combined with a positive voltage on the skimmer cone to reduce detection limits to pg/L concentrations in ICP-MS. These improvements reduce the risk of contamination and increase the efficiency of ion sampling and focusing.
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Challenges in the Interpretation of Data from Hyphenated Techniques, Part I: General Principles (PDF)This first installment in a series about challenges and pitfalls in interpreting data from hyphenated techniques explores general concepts in initial approaches.
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Toward Quantitative Imaging Mass SpectrometryThe main limitations of quantification using MALDI imaging are discussed and the different approaches used for quantitative measurement in MSI are evaluated.
Latest:
XPS Surface Characterization of Disposable Laboratory Gloves and the Transfer of Glove Components to Other SurfacesX-ray photoelectron spectroscopy (XPS) can be used to determine the contaminants present on laboratory gloves and to evaluate the type and amount of contamination transfer from gloves to other surfaces.
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Analysis of Terpenes in Cannabis Using Headspace Solid-Phase Microextraction and GC–MSHeadspace SPME combined with GC–MS for the qualitative and quantitative analysis of terpenes in cannabis offers several advantages compared to other methods. It does not require the use of organic solvents, does not coextract matrix, and provides additional means of peak identification and purity using spectral data. It is also a nondestructive method.
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Toward Quantitative Imaging Mass SpectrometryThe main limitations of quantification using MALDI imaging are discussed and the different approaches used for quantitative measurement in MSI are evaluated.
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Non-Destructive Red Wine Measurement with Dispersive 1064 nm Raman SpectroscopyOwing to technological improvements spurred on by the telecommunications boom of the last decade, Raman spectroscopy has become much more accessible to users in all application areas, including agricultural, forensic, pharmaceutical, biomedical, and others.
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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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EDXRF Analysis of Coal by FP MethodThe analysis of coal is demonstrated, with specific emphasis on the measurement of Na2O, using a Cartesian geometry energy dispersive X-ray fluorescence (EDXRF) spectrometer employing the Fundamental Parameters (FP) approach.
