liquid chromatography equipment Articles

  • Determination of Sulfonamide Antibiotics in Wastewater by Liquid Chromatography – Tandem Mass Spectrometry

    Introduction Antibiotics are widely used in human and veterinary medicine for the prevention and treatment of bacterial infectious diseases. An important but often disregarded aspect of antibiotic use is the fate of antibiotic residues entering the environment. Pharmaceutical industry wastewater, improperly-disposed of unused antibiotics, and non-metabolized antibiotics excreted by humans can ...

  • 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.

  • Surface Decontamination of Aromatic Liquids (Toluene) by DeconGel 1101 and 1102

    Abstract Surface decontamination efficacy determination of DeconGelTM 1101 and 1102 on stainless steel, floor tile, and concrete surfaces contaminated with aromatic liquids (toluene) was performed using LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis). Hazardous ...


    By METIS Scientific

  • Successful treatment of high azo dye concentration wastewater using combined anaerobic/aerobic granular activated carbon-sequencing batch biofilm reactor (GAC-SBBR): simultaneous adsorption and biodegradation processes

    The application of a granular activated carbon-sequencing batch biofilm reactor (GAC-SBBR) for treatment of wastewater containing 1,000 mg/L Acid Red 18 (AR18) was investigated in this research. The treatment system consisted of a sequencing batch reactor equipped with moving GAC as biofilm support. Each treatment cycle consisted of two successive anaerobic (14 h) and aerobic (8 h) reaction ...


    By IWA Publishing

  • Ultra-trace arsenic speciation at Columbia Analytical

    Ultra-trace speciation of arsenic and other metals is performed using a variety of techniques tailored to the specific combination of species, matrix, and detection limits required. Currently, two analytical systems are applied: Ion Chromatography-Inductively Coupled Mass Spectrometry (IC-ICP-MS) and Hydride Generation-Cryogenic Gas Chromatography-Flame Atomic Absorption Spectrometry ...


  • Surface Decontamination of Industrial Solvents (m-Cresol) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, aluminum, and concrete surfaces contaminated with Industrial Solvents (m-Cresol) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods 3500C (sampling) and 8321B (analysis). Hazardous Materials ...


    By METIS Scientific

  • Transformer oil quality control

    It is impossible to ensure reliability and longevity of energy systems without controlling the quality of transformer oil. Recent experience shows that approximately 30% of transformer oil, filled in power transformers, has deteriorated to the point when it becomes a risk factor. This is caused both to natural degradation of oil in operation due to thermal oxidation aging, and contamination with ...


    By GlobeCore GmbH

  • Surface Decontamination of Aldehydes (Glutaraldehyde) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGelTM 1101 on stainless steel, aluminum, and concrete surfaces contaminated with aldehydes (glutaraldehyde) was performed using GC/MS (Gas Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (Sampling) and 8270C (Analysis). Hazardous Materials ...


    By METIS Scientific

  • Surface Decontamination of Industrial Coolants (Ethylene Glycol) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGelTM 1101 on stainless steel, aluminum, and concrete surfaces contaminated with Industrial Coolants (ethylene glycol (EG)) was performed with GC/MS (Gas Chromatography/Mass Spectrometry) in accordance with Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8270C (analysis). Hazardous ...


    By METIS Scientific

  • Surface Decontamination of Aromatic Solids (Naphthalene) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGelTM 1101 on stainless steel, aluminum, and concrete surfaces contaminated with aromatic solids (naphthalene) was performed using LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis). Hazardous Materials ...


    By METIS Scientific

  • Surface Decontamination of Phenolic Compounds (Catechol) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGel™ 1101 on aluminum, carbon steel, and concrete surfaces contaminated with Phenolic Compounds (Catechol) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) in accordance with Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis). Hazardous Materials ...


    By METIS Scientific

  • Surface Decontamination of Pesticides (DDT) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, carbon steel, and concrete surfaces contaminated with Pesticides (dichlorodiphenyltrichloroethane (DDT)) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis). ...


    By METIS Scientific

  • Surface Decontamination of Organic Acids (Benzoic Acid) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, aluminum, and concrete surfaces contaminated with Organic Acids (benzoic acid (BA)) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis). Hazardous ...


    By METIS Scientific

  • Bioactive compounds from various plants

    Customer: Lifetree Biotech Co. Ltd, Korea Lifetree is a bio-venture company founded with the goal of researching and developing highly effective, yet safe natural products, functional foods and neutraceuticals from Korean native bo-tanicals. Lifetree has purifi ed an active compound, HD-1, from the tree Hovenia Dulcis, which is a well known tree in connection with liver health. Two major ...


    By BÜCHI Labortechnik AG

  • Surface Decontamination of Alkaloids (Nicotine) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGelTM 1101 on stainless steel, aluminum, and concrete surfaces contaminated with alkaloids (nicotine) was performed using LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (Sampling) and 8321B (Analysis). Hazardous Materials ...


    By METIS Scientific

  • Surface Decontamination of Halogenated Solvents (Tetrachloroethylene) by DeconGel 1101 and 1102

    Abstract Surface decontamination efficacy determination of DeconGelTM 1101 and 1102 on stainless steel, floor tile, and concrete surfaces contaminated with halogenated solvents (tetrachloroethylene (TCE)) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis). ...


    By METIS Scientific

  • Surface Decontamination of Hydrocarbon Petroleum Distillates (Kerosene) by DeconGel 1101 and 1102

    Abstract Surface decontamination efficacy determination of DeconGel™ 1101 and 1102 on stainless steel, aluminum, and concrete surfaces contaminated with Hydrocarbon Petroleum Distillates (kerosene) was performed with GC/MS (Gas Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8270C (analysis). ...


    By METIS Scientific

  • In Beverly, the Shoe Fits for Bioanalysis!

    This past May, many of the nation’s leading bioanalysts gathered in New England to share ideas and explore the latest advances in mass spectrometry, liquid chromatography, and sample preparation for large molecule quantification. At Waters’ semi-annual bioanalysis workshop, scientists from across the U.S. trained on the latest mass spectrometry instrumentation at our demonstration ...


    By Waters Corporation

  • Guide To Coolant In Oil Test Methods

    Liquid cooled engines and rotating equipment use glycol based coolants because of their excellent heat transfer abilities. However, glycol based coolants are not desirable at all in lubrication oil itself – Coolant ingression to the lubricant is a particularly nasty contaminant for the variety of damage it can cause. Glycol coolants break down in the high temperature engine environment, ...


    By Spectro Scientific

  • 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.

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