The LCGC Blog
Chromatographic methods often require that the analyte response is calibrated (and validated) over a wide concentration range when the analyte concentration in the sample is either unknown or is expected to vary widely. Bioanalysis, environmental, and clinical applications are just a few examples of where this may be the case.
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New EXP UHPLC guard column cartridges are made specifically for Raptor 1.8 µm columns. They provide extreme protection from particulates and matrix contamination, extend the lifetime of already rugged and long-lasting Raptor columns, and are proven to withstand the same UHPLC pressures as their analytical column counterparts. These new guard column cartridges are especially valuable when using dilute-and-shoot or other minimal sample preparation techniques.
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FEATURES
Split and splitless injections present several well-known and some not-so-well known challenges, mostly arising from heating of the inlet, that make sample injection and inlets a major hurdle for gas chromatographers.
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Guowang Xu, the Director of the CAS Key Laboratory of Separation Sci¬ence for Analytical Chemistry at the Dalian Institute of Chemical Physics, of the Chinese Academy of Sciences, recently spoke to LCGC about his work developing methods for the analysis of highly complex classes of similar compounds, and his use of these approaches in the analysis of a variety of compounds.
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Incognito asks if chromatographers are behind the curve when it comes to automation.
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The use of superficially porous particles (SPPs) for modern high performance liquid chromatography (HPLC) is now very common. Initially, SPPs rose as an alternative to sub-2-µm fully porous particles (FPPs). In recent years, many column manufacturers have developed 2-μm and smaller SPP-based products. This article investigates the practical utility of these smaller SPP designs.
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NEWS
Researchers from the University of Gothenburg, in Gothenburg, Sweden, have investigated whether plasma amino acid levels differed among children with celiac disease using liquid chromatography–mass spectrometry (LC–MS).
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Application Notes
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This study summarizes the analysis of SVOCs, including long-chain hydrocarbons, PCBs, phthalates, PAHs and flame retardants.  Read more
This sensitive and selective LC–MS/MS method shows recovery, accuracy, and precision for the determination of Δ9-tetrahydrocannabinol and its metabolites in plasma.  Read more
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