atmospheric instrument Articles

  • Energy and the protection of the atmosphere

    The essay reviews major environmental problems of energy development within a broader development and sustainability context. The role of energy in human development and major historical trends as well as their implications for carbon dioxide emissions are discussed. After summarising the scientific understanding of current and possible future climate change, the paper reviews available ...


    By Inderscience Publishers

  • Two Detector Solution to Analyzing Sulfur

    Sulfur compounds are reactive, corrosive to pipes, and destructive to catalysts in petroleum refineries. Sulfur emission are strictly regulated globally. When released into the atmosphere sulfur dioxide converts to sulfuric acid resulting in adverse effects on human health and the environment. Sulfur detection is found useful in many other industries; therefore, detection of sulfur compounds in ...


    By Restek Corporation

  • GAW Regional Station for Atmospheric Research

    The aim of the JRC-Ispra station is to monitor the concentration of pollutants in the gas phase, the particulate phase and precipitations, as well as aerosol optical parameters, which can be used for assessing the impact of European policies on air pollution and climate change. It is particularly well suited for the participation in international monitoring programs like the Co-operative program ...


  • 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.

  • Intense polar temperature inversion in the middle atmosphere on mars

    Current understanding of weather, climate and global atmospheric circulation on Mars is incomplete, in particular at altitudes above about 30 km. High-resolution observations from the Mars Climate Sounder instrument on the Mars Reconnaissance Orbiter show an intense warming of the middle atmosphere over the south polar region in ...


    By Nature Publishing Group

  • Evaluation of statistical models in atmospheric dispersion modelling

    When a gas is released into the atmosphere, there are inevitably random fluctuations in its concentration due to turbulence. Great recent improvements in instrumentation have shown how large these are. This has been acknowledged by CEC (the Commission of the European Communities), for example in that part of its Environment and Climate Programme (Framework IV) dealing with accidents. Likewise, ...


    By Inderscience Publishers

  • Instrument air case study

    Application Moisture is measured in instrument air to ensure that the air is properly dried. Problem Instrument air is used through-out a facility to protect delicate electronics, instruments, and to operate key process actuators. Many instruments also use instrument air to operate various pneumatic operators they might possess. Too frequently, there is ...

  • Atmospheric dispersion of pollutants in Sado estuary (Portugal) using biomonitors

    Epiphytic lichen transplants and aerosol samplers were put together in the Setubal area, Portugal. They were analysed by Instrumental Neutron Activation Analysis (INAA) and Proton Induced X-ray Emission (PIXE). The lichen dataset pointed out nine factors. No relevant differentiation was found towards different positioning of the lichens. T-transplants were delayed towards F-transplants, and for ...


    By Inderscience Publishers

  • Atmospheric chemical element pollution in an urban water-associated environment

    Nowadays, sustainability has become a complicated issue mainly in urban centres. Owing to the atmospheric emissions, the incorporation of toxic chemical elements is still not well known for urban water-associated ecosystems. Tillandsia bromeliads were employed as passive biomonitors of air pollution. Otherwise, the tank bromeliad Canistropsis billbergioides, native to the Atlantic Forest, was ...


    By Inderscience Publishers

  • Read about Confined Space in Construction and Atmospheric Testing Right Here!

    In 1993, 29 CFR 1910.146 went into effect as the first federal legislation governing entry into permit-required confined spaces in general industry. Because some industries, such as the construction industry, were covered by specific Occupational Safety and Health Administration (OSHA) safety regulations, they were exempt from the confined space entry requirements of the general industry rule. ...


    By Argus-Hazco

  • Water Vapor Interference in the UV Absorption Measurement of Atmospheric Ozone

    In this thesis work, a significant and sometimes large water vapor interference inherent to many and possibly all UV-based, commercially available ozone monitors was positively identified for the first time.  Depending upon the instrument's recent atmospheric history and calibration method, zone monitors can give erroneous results both immediately and hours later, and as a consequence possibly ...


    By 2B Technologies

  • A network suitable microwave radiometer for operational monitoring of the cloudy atmosphere

    The implementation of an operational network of microwave radiometers is presently hampered by the cost and complexity of the available instruments. For this reason, the definition and design of a low-cost microwave radiometer suitable for automatic, high-quality observations of liquid water path (LWP) were one objective of the BALTEX cloud liquid water network: CLIWA-NET. In the course of the ...


    By RPG Radiometer Physics GmbH

  • Tekran instruments—monitoring around the world

    Tekran provides trace-level mercury analytical and monitoring technology for a variety of applications including laboratory-based sample analysis, continuous point-source emissions and ambient air monitoring. This article focuses on and highlights the results of an application of Tekran’s Ambient Air Mercury Speciation System. In contrast to most other heavy metals, mercury (Hg) and mercury ...

  • Evaluation of atmospheric particle dispersion at a contaminated mine using biomonitors

    This study has carried out the assessment of magnitude of toxic elements contamination in and around the Sao Domingos mining area, a copper-sulphide open pit mine, and atmospheric transport of above elements by using lichens and Instrumental Neutron Activation Analysis (INAA). Samples of the epiphytic lichen Evernia prunastri and soils were collected. The concentrations of As, Sb, Fe and Zn were ...


    By Inderscience Publishers

  • The scalp hair as a monitor for trace elements in biomonitoring of atmospheric pollution

    The chemical element contents in scalp hair of 80 apparently healthy 15- to 58-year-old citizens (36 females and 44 males) of a non-industrial region in the Central European part of Russia were investigated by Instrumental Neutron Activation Analysis (INAA) and Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The summary of statistics, arithmetic mean, standard deviation, ...


    By Inderscience Publishers

  • Persistent Organic Pollutants (POPs) in the European Atmosphere: An Updated Overview

    The industrial revolution and the resultant technological society have led to a continuous production and emission of new toxic substances causing gradual and widely diffuse adverse effects to the entire planet usually known as Global Environmental Changes. Climate change, ozone depletion and global distribution of persistent organic pollutants (POPs) are, among other, important examples of ...


  • Climate change mitigation: overview of the environmental policy instruments

    Climate variability has been observed over a long period of time and is considered a natural process occurring on Earth. Climate change, however, is attributed directly or indirectly to human activity that alters the composition of the global atmosphere in addition to natural phenomena. Global climate governance requires a broad area of measures and policies to be implemented worldwide to tackle ...


    By Inderscience Publishers

  • Installation of Radar Level Instruments in Anaerobic Digesters

    ABSTRACTThere are numerous well-proven options available for level determination instrumentation. Instrumenting treatment processes present some unique challenges. Some of these include the ability for wastewater or residuals to clog and blind instruments. Level determination in an anaerobic digester presents these problems as well as others including foaming, surface agitation, and operation in ...

  • Why instrument hire makes occupational safety sense

    Background Decisions concerning the acquisition of occupational safety monitoring instrumentation are often made by operational staff that may not have visibility of the full financial implications of their choices. The following article will examine the factors affecting these decisions and explain why a strategic decision to hire instrumentation can deliver substantial and wide-ranging ...


    By Ashtead Technology Ltd

  • Tech update: Plant instrumentation - food engineering

    Sensors and other devices are the foot soldiers in automation architecture, but most food and beverage manufacturers still are looking for full value. You know an equipment category has arrived when it starts getting its own industry-specific center. For the food production sensors that do the heavy lifting in instrumentation technology, that day could arrive earlier rather than ...


    By Hardy Process Solutions

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