nox diffusion tube Articles

  • Ozone Artifacts and Carbonyl Measurements Using Tenax GR, Tenax TA, Carbopack B, and Carbopack X Adsorbents

    INTRODUCTION Sampling of airborne volatile organic compounds (VOCs) using thermally desorbable solid adsorbents has proven its usefulness in many environmental applications and has become a routine technique1 with compelling advantages over canisters, especially when a large sample volume or sample transport is needed.2 Many adsorbents are available, and users are faced with the difficulty of ...


  • AQMesh: a new option for flexible air quality monitoring

    AQMesh has an impressive collection of global users and performance results measuring ambient air quality in applications ranging from traffic planning and urban hotspots to industrial fence line monitoring, building ventilation management, or environmental lobbying. This pole-mounted unit comes with an independent power supply and communications, so offering the possibility of measuring air ...


    By AQMesh

  • The challenges and benefits of local air quality monitoring

    A new generation of air quality monitors is now being offered to provide localised, real-time air quality readings – but the potential benefit is only just starting to be realised. It is generally accepted that whilst measurements from air quality reference stations are highly accurate, they are not sufficiently location-specific. Key pollutants – such as NO2 and PM2.5 ...


    By AQMesh

  • Airparif uses Isatis to process 11 million+ mesh grids and generate daily air quality maps - Case Study

    Isatis has been part of Airparif data processing workflow for 10+ years. The software is used daily to gather data and map air pollution over Paris area. The facts Airparif is part of the French AASQA network (“Associations Agréées de Surveillance de la Qualité de l’Air”). The AASQA are a French non-profit association accredited ...


    By GEOVARIANCES

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