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Sulphite is a preservative added to a vast range of foods and beverages to prevent browning or oxidation. Some individuals are sensitive to sulphite additives and may experience a range of allergic reactions. Therefore, both the U.S. Food and Drug Administration (FDA) and European Union (EU) laws require that the presence of sulphites be declared on food labels when the concentration exceeds 10 mg/L. Several analytical methods exist to measure sulphite in food and beverages, however, they suffer from repeatability issues, and can be quite cumbersome to perform. A patent has been filed for an innovative, fast, and accurate ion chromatographic (IC) method based on direct current (DC) mode electrochemical detection. This article explains more.

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An improved method for determining total galactooligosaccharide (GOS) content in food and supplements using high performance anion exchange chromatography with pulsed amperometric detection is described.

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This article describes the importance of magnetic bead and chromatographic media selection for hybrid LBA/LC–MS/MS workflows.

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A demonstration of how to successfully convert from capillary zone electrophoresis to dual-opposite injection capillary zone electrophoresis for routine experiments is outlined.

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SFC–GCxGC is shown to be useful in fossil fuel analysis. Practical examples for the analysis of complex matrices are described.

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A fast, selective, and reproducible high performance liquid chromatography (HPLC) method was developed and validated for the analyses of third-generation cephalosporin antibiotics, namely, ceftriaxone, cefixime, and cefdinir in human plasma. The analysis was carried out on a 150 mm Ã- 4.6 mm, 5.0-µm C18 column. The mobile phase used was 80:20 (v/v) 50 mmM phosphate buffer (pH 5.0)–methanol at a flow rate of 1.0 mL/min with 230-nm UV detection.

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A simple and sensitive high performance liquid chromatography (HPLC) method with ultra-violet (UV) detection has been developed for the analysis of phenylurea herbicides.

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Gamma-Tocopherol is the dominant form of Vitamin E in many commonly ingested foods in the human diet, such as plant seeds and nuts. In the past, supplement companies have focused on the health benefits of alpha-tocopherol.

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High performance liquid chromatography (HPLC) with light absorbance detection (UV) is limited by the dependence of detector response on the structure of the analyte. Some detection techniques based on nebulization of the mobile phase and formation of Aerosol particles demonstrate an analyte independent response that approaches "universal."

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Unlike reversed-phase liquid chromatography, SFC lacks a universal stationary phase. Thus, it is important to re-evaluate the default column screening library used with SFC. In this study, three uncommon achiral SFC columns were investigated and compared to three popular stationary phases.

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An overview on the present state of analytical lipidomics is presented from the perspective of mass spectrometry (MS) and the MS strategies most frequently used in lipidomics are highlighted.

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The dioxin family consists of 210 compounds, of which 17 contain the 2,3,7,8 pattern of chlorination. These 2,3,7,8-containing compounds are of extreme concern to human health because of their high level of toxicity. Approximately, 12 of the 209 polychlorinated biphenyls have also been identified as human toxins. For this reason, the US FDA and EU have established strict regulations for the monitoring of food products for human consumption, in particular edible oils. Manual extractions of oils can be a time-consuming procedure often delaying lab turnaround times. By automating the process with the PowerPrep®, food oil samples can be reliably processed with routine 24 h turnaround times.

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Ion mobility–mass spectrometry (IM-MS) is outlined as a separations method, several examples of the utility of IM-MS for complex biological measurements are illustrated, and the implications of this approach for systems biology research are discussed.

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This yearly report on new products introduced in the preceding year, since March 2023, covers sample preparation instrumentation, supplies, and accessories.

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IONICON real-time VOC analyzers are frequently deployed in mobile laboratories, contributing to public safety, tracking air pollution where and when it matters.

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How to use these tools to develop an efficient and robust process

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Excipients are pharmacologically inactive substances used as carrier and release controllers for active drug ingredients. A significant amount (30–80% solid) of polymeric excipients such as hydroxyl propyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC), hydroxypropyl methyl cellulose acetate succinate (HPMCAS), and povidone are used.

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The authors explain modern UHPLC instrument design and outline simple procedures to identify causes of poor column and method performance.

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Chiral chromatography has become the preferred tool for enantiomer separations in the early stages of pharmaceutical development for the purpose of accurately identifying single pure enantiomers with pharmacologic, toxicological, and clinical information, as stipulated by the FDA.1

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This article shows the potential of IC–ICP–MS for monitoring iodine-containing ionic oxidation by-products that form during ozonation of iodinated X-ray contrast media.

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The authors explain modern UHPLC instrument design and outline simple procedures to identify causes of poor column and method performance.

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SFC–GCxGC is shown to be useful in fossil fuel analysis. Practical examples for the analysis of complex matrices are described.

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Analysis of OCPs, PAHs and PCBs in environmental samples through a consolidated GC-MS/MS method using the Thermo Scientific™ TRACE™ 1310 GC and the TSQ™ 8000 triple quadrupole GC-MS/MS.

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This article shows the potential of IC–ICP–MS for monitoring iodine-containing ionic oxidation by-products that form during ozonation of iodinated X-ray contrast media.

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This article presents possible uses of ion chromatography and related techniques combined with various detection methods for clinical and pharmaceutical analysis of common inorganic and organic anions and cations. An overview of achievements in this area from the past 10 years is presented and the most important trends and development perspectives for ion chromatography are described.

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The disinfectants commonly used to treat public drinking water can react with naturally occurring organic and inorganic matter in the source water to form disinfection byproducts such as haloacetic acids. Here, we describe the use of two-dimensional matrix-elimination ion chromatography (MEIC) for haloacetic acid analysis. This method minimizes the impact of matrix ions.

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The past decade has witnessed resurgent interest in coupling GC to atmospheric-pressure chemical ionization (APCI), which is suitable for the high column flows required for using flow modulation. This study assesses the use of GP-APCI with flow modulation for sensitive detection of selected trace organics.

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Edible oils and fats are complex mixtures of compounds. This article describes the role of normal-phase liquid chromatography as a generic sample pretreatment tool prior to detailed gas chromatography (GC) analysis.

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Food for human consumption and animal feedstuffs contain a variety of mono-, di-, oligo-, and polysaccharides with different functions. In this article specific liquid chromatographic (LC) systems (column, mobile phase, and detector), which are used to determine different carbohydrates in food and feed matrices, are described.