atmospheric gas analysis Articles

  • Headspace gas analysis video

    Why does headspace gas need to be measured? To check the continuity and quality of the gas supply to the packing machine, the efficiency of the flush/vacuum cycle and the integrity of the pack seal. To optimise gas usage and save costs. To meet customer headspace gas quality standards. ...


    By Systech Instruments Ltd

  • A Test Reference Year (TRY) approach to gas dispersion in the atmosphere

    For environmental analysis such as the dispersion of pollutants in the atmosphere, it is essential to have meteorological data that are relevant for a long period. In this paper, we explore the possibility of using an environmental Test Reference Year (TRY), i.e., a set of real, contemporaneous and hourly meteorological variables, 'extracted' from a hourly series of at least 10 years, for ...


    By Inderscience Publishers

  • Analysing the effects on the atmosphere of exergy changes due to exhaust–gas emissions

    The exergy change of the surroundings of exhaust–gas emitting ports, and its probable effects on the atmosphere, are investigated and the current stable state changing point of the atmosphere is determined. The potential for doing work is described and the effects of the amount of exhaust gas on the atmosphere are studied through calculation and analysis of an exergy–change function, which is ...


    By Inderscience Publishers

  • Analysing the effects on the atmosphere of exergy changes due to exhaust-gas emissions

    The exergy change of the surroundings of exhaust-gas emitting ports, and its probable effects on the atmosphere, are investigated and the current stable state changing point of the atmosphere is determined. The potential for doing work is described and the effects of the amount of exhaust gas on the atmosphere are studied through calculation and analysis of an exergy-change function, which is ...


    By Inderscience Publishers

  • Reducing NOx in Diesel Emissions | Spectroscopy Solutions

    Air pollution and NOx emissions from diesel engines are a global concern due to their potential impacts on human health. Researchers worldwide are developing new and improved methods to reduce NOx emissions. Infrared spectroscopy in the gas phase, which is made possible using FTIR gas cells from Specac, has an important role to play in this ...


    By Specac Limited

  • Analysis and interpretation of the monitoring data for C2?C11 hydrocarbons in the atmosphere of a rural Portuguese site

    This paper focuses the application of a measurement technique for determining atmospheric C2?C6 hydrocarbons after canister sampling and analysis by gas chromatography/flame ionisation detection (GC/FID), as well of an adsorption-sampling technique for C6?C11 compounds and GC/FID analysis after thermal desorption and cryogenic concentration. Tens of samples collected at Giesta, a rural area ...


    By Inderscience Publishers

  • Mercury Analysis

    Characteristics of Mercury What is Mercury? Mercury is a naturally occurring silver-colored metallic element noted for its occurrence as a liquid at room temperature and toxic to living organisms. This silvery, opaque liquid metal is very dense, yet has a high surface tension that causes it to form tiny perfect spheres in the pores of the rocks it is found in. It is ...


    By HORIBA Europe GmbH

  • Global solution: Gas and particulate analysis in Cement industry

    Cement plants are increasingly required to install continuous emission monitoring systems (CEMS). While these represent a significant financial outlay, a range of other factors also need to be considered when selecting a suitable CEMS. To the inexperienced, selecting a suitable CEM can mistakenly be considered as simply ensuring that the applicable national regulations (eg MACT in the USA, ...


    By ENVEA

  • Total solution: Gas and particulate analysis in Cement industry

    Cement plants are increasingly required to install continuous emission monitoring systems (CEMS). While these represent a significant financial outlay, a range of other factors also need to be considered when selecting a suitable CEMS. To the inexperienced, selecting a suitable CEM can mistakenly be considered as simply ensuring that the applicable national regulations (eg MACT in the USA, ...


    By ENVEA

  • Forensic engineering applied to the analysis of a gas explosion in a residential building

    Present paper deals with the identification of the cause of an explosion in a hollow space positioned below a residential building as the result of welding operations. On field investigation clearly demonstrated that the explosion was due to the ignition of a flammable atmosphere in the basement of the building. Along the trial two hypotheses were brought to the judge: (a) explosion of an ...


    By Inderscience Publishers

  • SCUBA diving gas analysis - keep safe, keep diving

    If you plan to scuba dive, you need to know about the different gases available. Many people think that you can breathe the same air underwater that you breathe on the ground. However, this is not the case. Regular air contains a high amount of ...


    By Analox Sensor Technology

  • 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.

  • MAP gas analysis of gluten free bakery products at Ultrapharm Ltd

    Ultrapharm Ltd started their gluten free bakery business in 1993, manufacturing a small product line to coeliac’s in the UK.  They were one of the first gluten free producers to bake to order and deliver the next day. Over time the range has developed to over 200 different lines a day, including crumpets, sausage rolls, cornish pasties, battenburg cakes etc.  In order to establish ...


    By Systech Instruments Ltd

  • Accuracy and precision analysis of chamber-based nitrous oxide gas flux estimates

    Chamber-based estimates of soil-to-atmosphere nitrous oxide (N2O) gas flux tend to underestimate actual emission rates due to inherently nonlinear time series data. In theory, this limitation can be minimized by adjusting measurement conditions to reduce nonlinearity and/or by using flux-calculation (FC) schemes that account for the so-called 'chamber effect.' The current study utilizes gas ...

  • Landfill Gas to Power

    Location: Mount Gilead, NC Online Date: 2012 Element Markets is partnering with Republic Services, Inc., one of the largest waste companies in the U.S., to develop a power project at a regional landfill in North Carolina, which will come online in 2012. Drawing from our extensive project development experience, we conducted exhaustive technical analysis to ...


    By Element Markets LLC

  • Modified atmosphere packaging of pre-packed meat - Case Study

    The Use of Systech Illinois' Gaspace Headspace Gas Analysers in the Pre-Packed Meat Industry Our Gaspace headspace gas analysers play a key role in quality assurance for Tulip International's Modified Atmosphere Packaging of pre-packed meat. Tulip International's cooked meats division is one of the largest producers of pre-packed bacon in the UK. Some of the output is vacuum ...


    By Systech Instruments Ltd

  • Gas Safety in the Laboratory

    Modern laboratories use a number of gases as part of their daily operations. This blog details two of the most common methods of laboratory gas supply, and their associated safety risks and benefits. A number of gases are used in laboratories to support various applications such as Chromatography (GC and LC-MS) Spectroscopy, ELSD and Sample Preparation, to name just a few. Helium, hydrogen and ...

  • CFD Analysis for NOx-Control in a Refinery

    Refineries are required by law to reduce the emission of nitrous oxides (NOX) to the atmosphere. Spray nozzles are key components in the gas conditioning equipment used to control the humidity and temperature of the gases, providing controlled volumes of liquid with predictable drop size and consistent spray coverage. Knowing these values is vital for the optimization of gas conditioning ...


    By Spraying Systems Co.

  • WMO Greenhouse gas bulletin

    The latest analysis of data from the WMO-GAW Global Greenhouse Gas Monitoring Network, a comprehensive network of the Global Climate Observing System (GCOS), shows that the globally averaged mixing ratios of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) have reached new highs in 2007 with CO2 at 383.1 ppm, CH4 at 1789 ppb and N2O at 320.9 ppb. These values are higher than those in ...

  • Removal of carbon dioxide from the atmosphere to reduce global warming: a modelling study

    We propose non–linear models to study the feasibility of removing CO2 from the atmosphere by introducing some external species such as liquid droplets and particulate matters in the atmosphere, which may react with this gas and get it removed by gravity. Further, this gas can also be removed by photosynthesis process upon using plantation of leafy trees around the sources of ...


    By Inderscience Publishers

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