ambient air sample Articles

  • Volatile Organic Compounds measurement in tropical and temperate climates: concentration levels in urban and rural areas

    Rapid urbanization and economic development in past decades have led to air pollution problems such as excess of nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs) and Semivolatile Organic Compounds (SVOCs). Motor vehicle exhaust, industrial emissions, chemical solvents as well as biogenic emissions are the major anthropogenic sources of VOCs. Depending on the area ...


    By Chromatotec Group

  • Case Study - Ice blast technology for nuclear decontamination

    Application: Customer has 150 gondola type rails cars used to transport contaminated soil/debris to it’s facility in the Tooele Hazardous Industry District. Customer requested CIB demonstrate/test the ice blast process effectiveness in removing contaminated soil/dirt/debris from interior steel surfaces of transport rails car. Customer requires the cleaning ...


    By Coulson Ice Blast

  • Gas Monitoring for Ventilation Control and Energy Management

    The growing demand for underground and enclosed parking and maintenance garages (resulting from limitations on land availability) has increased the awareness and need for proper ventilation and control systems. In addition, increased health and safety programs have only added to the concerns of toxic and combustible gases in confined or enclosed spaces. Historically, ventilation and make-up air ...


    By Arjay Engineering Ltd.

  • AquaLab Analyzer provides real-time phosphorus measurement in Everglades

    When it comes to ecosystem sustainability, Florida is no backwater. The South Florida Water Management District, which includes the unique Everglades habitat, had a major challenge. The EPA and various governmental authorities have defined limits for many water quality parameters to support a water body’s designated use. Any physical, chemical or biological condition that threatens the designated ...

  • Japanese Organics Recycling Association Formed

    Another backyard composting adage states that compost should have the feel of a wrung-out sponge — damp but not dripping wet. Actually, a wrung-out sponge may be on the dry side for composting, but the analogy does provide a great image for understanding the reasons for balancing moisture. Like a compost pile (or windrow or material in a vessel), a sponge is a solid mass containing an enormous ...


    By BioCycle Magazine

  • FTIR gas analyzers support management of fire at UK waste facility

    The capability to convene a multi-agency Air Quality Cell (AQC) was established in England in 2009 following the Buncefield Oil Storage Depot incident. A review of this event identified the need to rapidly co-ordinate the acquisition, analysis and interpretation of air quality data in major incidents.  Arrangements have been made in England to bring together experts from the Environment ...


    By Gasmet Technologies Oy

  • Heat treatment of steels and other metals case study

    Application Moisture is measured in the blanketing gases that are used in the treatment of steel. Problem Inert blanketing gases are required during the heat treatment of steels to prevent oxidation of the metal product. At heat-treating temperatures, moisture and oxygen will readily react with the metal to form an undesirable metal-oxide coating on the ...

  • Is it time to upgrade the PM2.5 federal reference method?

    The fine particulate matter (PM2.5) Federal Reference Method (FRM) has in many respects been a great success. When the method was implemented, there was some doubt that the state and local monitoring agencies that routinely provide air quality data would be able to manage a program, which often distinguishes one location from another by just a few μg/m3. As it turns out, data from the FRM ...

  • Application in renewable energies field : odor online monitoring in methanization process

    When odor issues occur at an industrial site, rapid diagnosis must be done and a strategy defined to treat odor sources definitively. Today, the sensory panel approach using dynamic olfactometry analysis is considered as first approach to rank odor sources and subsequently to treat the most noxious odors. When investigating the source of the odor, an online monitoring system provides for the best ...


    By Chromatotec Group

  • Application in Renewable Energies field : odor online monitoring in methanization process

    When odor issues occur at an industrial site, rapid diagnosis must be done and a strategy defined to treat odor sources definitively. Today, the sensory panel approach using dynamic olfactometry analysis is considered as first approach to rank odor sources and subsequently to treat the most noxious odors. When investigating the source of the odor, an online monitoring system provides for the best ...


    By Chromatotec Group

  • Volatile Organic Compounds measurement in tropical and temperate climates: Concentration levels in urban and rural areas

    Rapid urbanization and economic development in past decades have led to air pollution problems such as excess of nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs) and Semivolatile Organic Compounds (SVOCs). Motor vehicle exhaust, industrial emissions, chemical solvents as well as biogenic emissions are the major anthropogenic sources of VOCs. Depending on the area ...


    By Chromatotec Group

  • LEV: What You Need to Know Before Selecting and Installing Dust Control Systems - White Paper

    Many processes in the production of drugs in the pharmaceutical industry produce significant quantities of dust which can cause serious health related problems to workers handling the materials. Additional problems of these operations are the loss of valuable material and the serious risk of cross contamination of drugs. Operations such as scooping, tablet processing, blending, milling, and tray ...


    By Kleissler P C, LLC

  • Cerex introduces the new AirSentry FTIR Open Path Analyzer

    Cerex Monitoring Solutions is pleased to announce the release of the third generation model AirSentry FTIR multi-gas open path FTIR analyzer. The decision was made to fully redesign the analyzer to take full advantage of advances in hardware and software technology. The third generation design represents a full reconfiguration of the instrument. Goals were to reduce initial and operating costs ...

  • A Comparison of Point Sensors and Open Path Monitors For Toxic Gas (esp. HF) Monitoring

    Point Sensors Ion Mobility Spectroscope (IMS) – a gas sample is ionized by a radioactive source (Ni63). Differences in ion drift under the influence of an applied electric field produce a spectrum that is dependent on the mass, charge, and shape of the component ions. The detector signal and strength is tuned to the drift time of the ion of interest (in this case HF) and signal strength is ...


    By Boreal Laser Inc.

  • Train derailment prompts contaminated land investigation - Case study

    On March 30th 2015 a long freight train, transporting a variety of goods including lumber and chemicals, wound its way through the state of Mississippi. At around 5pm, part of the train failed to negotiate a curved portion of the track in a rural area near Minter City, resulting in the derailment of nine railcars, one of which leaked chemicals onto agricultural farmland and woodlands. Emergency ...


    By Gasmet Technologies Oy

  • How Does a Gas Analyser Work?

    Whatever you want to detect, you need to identify a property of the object that is easy-enough to measure. When it comes to monitoring and analysis of gaseous species (atoms or more commonly molecules), it turns out that it often is possible to utilize the optical properties of the gas. You need a light source, a light detector, and a characteristic behaviour of the gaseous species in question ...


    By Opsis AB

  • Performance-Based Measurement Systems

    Many of the Environmental Protection Agency's (EPA's) methods used to monitor air, water and soil for environmental contaminants prescribe step-by-step details on how the chemical analysis must be conducted and prohibit any deviations or variations. The EPA has recognized that monitoring equipment and technology have improved tremendously over the last few years; that environmental media do not ...


    By WSP | Parsons Brinckerhoff

  • Improved HF monitoring in Primary Aluminium Smelters with Laser Gas Detectors

    Primary aluminium smelting generates large amounts of hydrogen fluoride gas (HF). Concerns for worker safety and ambient air quality require that HF be monitored at several locations in smelters. Historically, a variety of methods have been used for HF monitoring. Cassette samplers and wet chemistry techniques, coupled with complex and expensive ...


    By Boreal Laser Inc.

  • Detecting Gases: What You Can`t Smell Can Hurt You

    Walking through a drill-site area, a worker smells rotten eggs and stops tor a minute or two to assess where a gas leak might exist. Rubbing his itchv eves as he investigates further, he notices that he no longer smells the tell¬tale hydrogen sulphide odour. He does not realize that the gas has deadened his olfactory senses and unless he leaves the area within seconds, he could lose ...

  • Field Detection of Chlorinated Alkenes in Well Water using the FROG-4000 Portable GC - Case Study

    Introduction Defiant’s FROG 4000, a portable GCPID system, was used to identify and determine the concentration of chlorinated alkenes in several extraction wells located in Tacoma Washington. Split samples were taken at each well and sent to an offsite lab for analysis. This case study examines the field exercise and highlights the high degree of agreement between the offsite lab and ...


    By Northern ANI Solutions Ltd.

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