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  • Measuring Odors From Livestock Operations
    Chemist Dick Pfeiffer uses a gas chromatograph/mass spectrometer to analyze compounds in odors collected from a swine production facility. Complaints about nuisance livestock odor in rural areas have become a problem nationwide. Scientists for the U.S. Department of Agriculture's are working
  • Hutchinson Hall gets new Organic Chemistry Teaching Lab
    discussions on the planning, execution, and analysis. of experiments. The new lab is equipped with modern chemistry instrumentation,. including a capillary gas chromatograph and two Fourier transform infrared. spectrophotometers. The lab was specifically designed and equipped to streamline. workflow
  • Features and Applications of Newly-Developed GC-TOFMS
    A gas-chromatograph mass spectrometer (GC-MS) is a combined analyzer that has superior ability in analyzing organic compounds qualitatively and quantitatively. The first part, gas chromatograph, separates the compounds included in a sample (mixture), then the second part, mass spectrometer, obtains
  • PAS vs. GC for SF6 Monitoring
    Monitor vs. their own Gas Chromatograph w/ an ECD detector. NUCON injected a known quantity of SF6 into their HVAC Test System and pulled bag samples from various points. By knowing the flow rates and SF6 starting concentration, NUCON calculated the expected SF6 values at each point. The samples
  • Ethylene: Diethylene Glycols On-Line Monitoring with a ClearView TM Photometer
    To replace a gas chromatograph (GC) by continuously measuring the amount of ethylene glycol in diethylene glycol using a near infrared (NIR) ClearView TM fiber optic filter photometer. Background: It is not obvious, even to many NIR practitioners, that NIR can make more subtle distinctions among
  • Air Emissions from the Automobile Manufacturing Industry: A Bio-Oxidation Pilot Study of Paint Emissions Control
    were made to airflow (adjusting residence time) and sump water recirculation spray (biotrickling filter flow rate and biomatrix chamber timing) while monitoring the VOC inlet and outlet concentrations using a gas chromatograph equipped with a flame ionization detector (FID - Method 25A).
  • A Modular Approach to Process Analysis
    As a potential application, David describes a NeSSI device with pH, redox or nano-liquid chromatograph, used to measure components in the condensed phase of a chemical reaction. "A NeSSI device with a mass spectrometer or nano-gas chromatograph could be used to measure gases evolved during
  • GRACEnet: A Unified Response to Climate Change
    . Samples will be analyzed for carbon dioxide, nitrous oxide, and methane with a gas chromatograph. The concept behind GRACEnet (Greenhouse Gas Reduction through Agricultural Carbon Enhancement Network) is simple. Scientists are comparing traditional systems with alternatives, using regional approaches
  • NeSSI and PAT Work Together in Pharmaceutical Manufacturing
    the analysis is complete. Analysis may be intermittent, as in the case of a gas chromatograph, or continuous, as in the case of spectroscopic instruments. In-line analysis means that the analysis is carried out in situ using a probe equipped with a sensor that is inserted

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