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The Future of Miniature Mass Spectrometers and a Path Forward: A Few Thoughts from an Academic ResearcherA discussion of the future role of miniature MS systems, the need for simplification in operation, the role of ambient ionization, and challenges in development and commercialization.
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Significant Improvements in Pesticide Residue Analysis in Food Using the QuEChERS MethodThe analysis of pesticide residues in food samples from the state of Connecticut's regulatory monitoring program are compared to USDA and US FDA results.
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Determination of Olive Oil Adulteration by Principle Component Analysis Using HPLC-Charged Aerosol DetectionAdulteration is a significant problem for the olive oil industry because of the product’s high value. With the demand for olive oil expected to rise significantly, this problem is set to increase. Reliable and accurate determinations of olive oil adulteration are therefore required to maintain product integrity. This article introduces a principle component analysis‑based approach that uses data obtained by high performance liquid chromatography (HPLC)-charged aerosol detection (CAD) to determine extra virgin olive oil adulteration by common vegetable oil adulterants. Using only sample dilution and analysis, the method could be used to assess olive oil quality relative to pomace oil.
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ISC 2014: The Sound of ChromatographyThe hills will be alive with the sound of chromatography when the 30th International Symposium on Chromatography (ISC 2014) takes place from 14?18 September 2014 in Salzburg, Austria.
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Low Level PAH Detection with an Extensive Dynamic RangeThe analysis of PAHs in less than 16 min using hydrogen as carrier gas and the PerkinElmer? Clarus? SQ 8 GC/MS operating in SIM mode is presented. Detection limits down to 0.5 pg on-column and a wide dynamic range are reported.
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Gas Chromatography with Soft Ionization Mass Spectrometry for the Characterization of Natural ProductsThe application of gas chromatography (GC) combined with atmospheric pressure chemical ionization mass spectrometry (GC–APCI-MS) and with supersonic molecular beam ionization mass spectrometry (GC–SMB-MS).
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GCxGC–TOF-MS Complements Passive Sampling for the Screening of Pollutants in WaterA carefully chosen analytical technique can enhance the inherent advantages of passive sampling of watercourses over more traditional "grab" or "spot" sampling.
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Screening by LC–MS-MS and Fast Chromatography: An Alternative Approach to Traditional Immunoassays?A new technique was developed based on liquid chromatography coupled with tandem mass spectrometry to analyze drugs that are not part of current immunoassay screening, specifically zolpidem, zopiclone, and zaleplone, or "z-drugs."
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Probing Aqueous Surfaces by TOF-SIMSA breakthrough using a microfluidic interface to conduct sensitive time-of-flight secondary ion mass spectrometry (TOF-SIMS) analysis and study liquid surfaces in situ under vacuum conditions is described here.
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Polysorbate Analysis in Biopharmaceutical Applications—A Snapshot of the Analytical ToolboxAn overview of different approaches for the qualitative and quantitative analysis of polysorbates.
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Sensitivity of Comprehensive Two-dimensional Gas Chromatography (GCXGC) Versus One-dimensional Gas Chromatography (1D GC)In this article, the sensitivity of two-dimensional gas chromatography coupled to two different detectors - a time-offl ight mass spectrometer (GCXGC–TOF-MS) and a fl ame ionization detector (GC?GC–FID) - was compared to the sensitivity of conventional one-dimensional gas chromatography (GC–TOF-MS and GC–FID) by determining method detection limits (MDLs) for a series of different compounds with different polarities.
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An Improved LC–MS–MS Method for the Determination of Clenbuterol in Human UrineA sensitive method that reduces the number of false-positive results
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Gas Chromatography with Soft Ionization Mass Spectrometry for the Characterization of Natural ProductsThe application of gas chromatography (GC) combined with atmospheric pressure chemical ionization mass spectrometry (GC–APCI-MS) and with supersonic molecular beam ionization mass spectrometry (GC–SMB-MS).
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Tips & Tricks: GPC/SEC Analysis of Aqueous Polymer DispersionsPolymer dispersions are used in numerous applications including paints, binders, and adhesives. These complex mixtures usually contain polymeric components that contribute significantly to their physical and chemical properties.
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Meeting Review: Latest Advances in the Analysis of Complex Environmental Matrices, 2019A biennial meeting jointly organized by the Environmental Chemistry Group, Separation Sciences Group, and the Water Science Forum, and discussing the latest advances in the analysis of complex environmental matrices, is now in its eighth year. The most recent iteration of the event occurred on Friday 22 February 2019 in the Science Suite, Royal Society of Chemistry, Burlington House, in London, UK. This meeting review offers an overview of what is happening in the industry.
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Mass Spectrometry for Natural Products Research: Challenges, Pitfalls, and OpportunitiesCorrelating biological activity with chemical composition is the Holy Grail of natural product chemists. Is mass spectrometry the right tool for this challenge?
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New Sample Preparation Products and Accessories for 2024This yearly report on new products introduced in the preceding year, since March 2023, covers sample preparation instrumentation, supplies, and accessories.
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Analyzing Synthetic Cathinones Using Direct Sample Analysis Time-of-Flight Mass SpectrometryDirect sample analysis coupled to high-resolution time-of-flight mass spectrometry (TOF-MS) may be effective at analyzing synthetic cathinones, especially for qualitative analysis, because it does not require potentially tedious sample preparation.
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THC Isomers in Cannabis: An EAS Interview with Brandy YoungBrandy Young, PhD, an analytical chemist with more than 15 years of experience, entered the cannabis industry in response to a recognized need for laboratory testing, aligning her expertise with the emerging demand in New York's active medical and adult-use cannabis programs. Here, she shares some background information on her Eastern Analytical Symposium (EAS) talk, which delves into the characterization of tetrahydrocannabinol (THC) isomers in cannabis products.
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Effective Cleanup and Analysis of Metronidazole from Foaming Facial CleanserWhen working with complex matrices such as personal care products, sample preparation is perhaps the most difficult step of the analysis process. By utilizing a targeted sample preparation technique, such as ion-exchange SPE, analysis can be significantly improved as compared to less targeted techniques such as liquid-liquid extraction.
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Purge-and-Trap GC Analysis of Methane in Water Samples Associated with Hydraulic FracturingShale gas reservoirs, such as the Marcellus shale reserve in Pennsylvania and Barnett shale reserve in Texas are a growing source of natural gas in the United States. Hydraulic fracturing or "fracking" involves pumping water, sand, and chemicals at extremely high pressure into deep underground wells to crack open hydrocarbon-rich shale formations and extract natural gas.
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Microwave-Accelerated Extraction — SW-846 Method 3546 and BeyondMicrowave-accelerated extraction (MAE) is described and evaluated. The latest enhancements to this technology are discussed from a hardware and applications perspective.
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Analysis of Barbiturates in Urine with Agilent 6430 LC–MS–MS and Poroshell 120 EC-C18Toxicology Laboratory at the Veterans Administration, Portland, Oregon, USA, Agilent Technologies
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High Throughput MicrochromatographyThe growing importance of biotherapeutics to the pharmaceutical industry has created an increasing demand for protein analysis techniques with high precision, high sensitivity and high throughput.
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Screening by LC–MS-MS and Fast Chromatography: An Alternative Approach to Traditional Immunoassays?A new technique was developed based on liquid chromatography coupled with tandem mass spectrometry to analyze drugs that are not part of current immunoassay screening, specifically zolpidem, zopiclone, and zaleplone, or "z-drugs."
Latest:
An Improved LC–MS–MS Method for the Determination of Clenbuterol in Human UrineA sensitive method that reduces the number of false-positive results
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Application note: Reversed-Phase Flash Chromatography Purification of Peptide-Peptoid HybridsPurification of peptide-peptoid hybrids can be obtained by reversed-phase chromatography with excellent recovery and resolution.
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Analysis of Pharmaceuticals and Personal Care Products in River Water Samples by UHPLC–TOF-MSA study of pharmaceuticals and personal care products in river water samples is presented from northeastern United States using ultrahigh-pressure liquid chromatography (UHPLC) coupled with TOF-MS for both targeted and nontargeted analytes
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50 Years in Chromatography and Sorption Techniques: A Look from the EastIn both East and West, new ideas have often met resistance.
