chromatographic separation system Articles

  • BTEX monitor, equal performances to laboratory chromatographs

    Environnement S.A leveraged its technical leadership in this field with an extensive experience, being one of the first companies creating its first BTEX analyser almost 20 years ago. The VOC72M third generation of ...


    By Environnement S.A

  • Texas Instruments - A Novel Separation Technique for the Analysis of Trace Levels of Atmospheric Contaminants in Inert Semiconductor Process Gases

    A NOVEL SEPARATION TECHNIQUE FOR THE ANALYSIS OF TRACELEVELS OF ATMOSPHERIC CONTAMINANTS IN INERTSEMICONDUCTOR PROCESS GASES J. Scott McWilliams, Alan Johnson, Charlene Long, Jeremiah D. Hogan*Texas Instruments, Inc.Dallas, TX 75265 Low ppb detection limits for contamination in cylinder gases have been achieved with gas chromatography using a modified gas ...


    By Environics, Inc.

  • Tips to maintain your HPLC & UHPLC systems and columns

    Recently, Ade Kujore (Cecil Instruments), Tracie Brombos (GenTech Scientific) and I were asked by Angelo De Palma, a well-respected writer for Lab Manager magazine, to contribute to an article about maintaining and caring about your laboratory instruments. Here are my tips/best practices for column and HPLC/UHPC/UPLC system maintenance. Maintaining your ...


    By Waters Corporation

  • Development of a novel odor measurement system using gas chromatography

    This paper describes a novel odor measurement system for creating arrays of virtual chemical sensors with nonoverlapping responses using ultrahigh-speed gas chromatography with a surface acoustic wave sensor (GC/SAW). This GC/SAW system provides high-resolution twodimensional olfactory images for easy recognition of many complex odors. Separation and quantification of the individual chemicals ...

  • Integrated solar and wind energy powers oil recovery system

    Recovery of free-product petroleum at the former St. Croix Alumina (SCA) site in Kingshill on St. Croix, VI, is addressing ground-water contamination caused by past releases of fuel and refined petroleum at SCA. The oil recovery system employs wind-driven turbine compressors (WTCs), wind-driven electric generators (WEGs), and photovoltaic (PV) panels to power pneumatic and electric submersible ...

  • The development of cation-exchange chromatography in free amino acids analysis

    Although it was not called a liquid chromatograph, the first such instrument was introduced in late 1959 by Beckman Instruments and was designated the M.S. Amino Acid Analyzer in honour of Moore and Stein. Inject valves had yet to be invented, the buffer switching valves were glass stopcocks and the column temperature was controlled by circulating water baths. Two positive displacement pumps ...


    By Pickering Laboratories, Inc.

  • Natural Gas: Complete Analytical Solution

    Chromatotec® has developed in its Research & Development laboratories, a new instrument for hydrocarbon (C1-C6+) measurements and calorific values as well as WOBBE index computation. This analyzer is based on chromatography principle using a Thermal Conductivity Detector (TCD). The sample will be separated into the column and quantified by the detector. A difference of thermal ...


    By Chromatotec Group

  • Air Emissions from the automobile manufacturing industry: a bio-oxidation pilot study of paint emissions control

    Bio•Reaction Industries (BRI) was contacted by Toyota to assess the abatement potential of an engineered bio-oxidation system (biofilter). The proposed intent of the pilot was to evaluate the effectiveness of biofiltration as available alternative to traditional VOC removal technology on an existing 3 stage wheel paint booth. A pilot unit consisting of a biotrickling filter and a separate ...


  • Air emissions from the automobile manufacturing industry a bio-oxidation pilot study of paint emissions control

    Bio•Reaction Industries (BRI) was contacted by Toyota to assess the abatement potential of an engineered bio-oxidation system (biofilter). The proposed intent of the pilot was to evaluate the effectiveness of biofiltration as available alternative to traditional VOC removal technology on an existing 3 stage wheel paint booth. A pilot unit consisting of a biotrickling filter and a separate ...


  • Amino acid analysis matrix independent analysis of free amino acids

    Pickering Laboratories specializes in manufacturing of cationexchange columns and eluants for amino acid analysis. No other techniques have been shown to match the reproducibility and sensitivity of this post-column methodology. Advantages of this method, such as absence of matrix interferences, are especially important in analysis of native samples. Pickering provides several options for the ...


    By Pickering Laboratories, Inc.

  • Innovations in Site Characterization

    This case study is the first in a series designed to provide cost and performance information for innovative tools that support less costly and more representative site characterization. These case studies will include reports on new technologies as well as novel applications of familiar tools or processes. They are prepared to offer operational experience and to disseminate information about ...


  • 3 Reasons for Biopharmaceutical Labs to add Mass Detection to Routine Analyses

    As regulators focus in on the critical quality attributes (CQAs) of biotherapeutics, what can biopharmaceutical labs in late development or QC do to increase confidence in their bioseparations assays – other than to run additional orthogonal assays? Many labs are finding the answer in mass detection, specifically with the ACQUITY ...


    By Waters Corporation

  • Ion Mobility Mass Spectrometry – Catch the Excitement!

    Interest in ion mobility mass spectrometry (IMS) technology is growing rapidly. The signs are everywhere. Since the year 2000, the number of abstracts submitted to ASMS mentioning ion mobility has grown more than 10-fold – from 30 to more than 350 in 2015. For most of that time, ion mobility has been available commercially in high-end research instruments or in homemade platforms. Waters ...


    By Waters Corporation

  • Resolution in life and mass spectrometers? It really depends…

    “How few there are who have courage enough to own their faults, or resolution enough to mend them.” Benjamin Franklin As I sat one morning before work staring into my green tea leaves at the bottom of my cup and reflecting on my resolutions achieved and resolutions that evaded me in 2015, I resolved to make 2016 a better year. The ‘missed’ resolutions ...


    By Waters Corporation

  • Speciation of five arsenic compounds in urine by HPLC/ICP-MS

    High-performance liquid chromatography (HPLC) coupled to an ICP-MS has become an invaluable analytical tool for the determinations of trace levels of individual arsenic compounds (speciation). Speciation of arsenic is used to improve our knowledge of arsenic’s biochemical interactions and to evaluate toxicity risks. The toxicity and bioavailability of arsenic is highly dependent on form or ...


    By PerkinElmer, Inc.

  • Fast analysis of semi-volatile organic compounds using PTV-GC–TOF MS

    The evaluation of semi-volatile organic compounds (SVOCs) in environmental matrices poses many challenges for the analyst, not least the vast number that may be encountered in any given analysis. In addition, analyte reactivity and the potential for multiple analytes to co-elute makes achieving the required method detection limits (LODs or MDLs) quickly and cost-effectively a formidable task ...


    By SepSolve Analytical

  • The Advantages of a Targeted 2D LC Approach

    Webinar Highlights | Focus on the Relevant: The Advantages of a Targeted 2D Chromatography Approach Hi folks, I’m Daniel Root, Senior Product Marketing Manager for Multidimensional LC Systems at Waters. I recently conducted a webinar that addressed multidimensional liquid chromatography – an exceptional tool for the improvement of characterization and separation of ...


    By Waters Corporation

  • Is Microflow LC a Reality or Perception?

    Microflow or nanoflow chromatography has been used mostly in the academic and fundamental research environment in the past for its various advantages over analytical liquid chromatography, but rarely in the industrial settings. This is most likely because many of us believe it is a pain-in-the-neck technique to perform! But is this a reality or just a ...


    By Waters Corporation

  • Binary vs Quaternary Pumps

    How is a Gradient Created? Any liquid chromatograph is an amalgamation of a certain set of components that delivers to the scientist a monograph of the sample they are analyzing.  Traditionally, an LC system consists of a pump, an injector, a column heater, a detector and even more commonly these days a mass spectrometer or mass detector.  In ...


    By Waters Corporation

  • Monitor Volatile Organic Compounds (VOC’s) with PPM Technology’s IAQ Monitor

    Volatile organic compounds (VOC’s) are emitted as gases from certain solids or liquids. VOCs include a variety of chemicals, some of which may have short- and long-term adverse health effects. Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors. VOC’s is one of numerous sensor options that can be incorporated into PPM Technology’s ...


    By PPM Technology

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