air sampling system Articles

  • Improve air sampling by measuring mass flow

    How can contaminant concentration be stated unless the sample mass is known? The answer: it can’t. Without an accurate measure of the mass of air collected as a sample, the relative concentration of a contaminant—whether it be chemical or particulate—cannot be stated as a part per million, billion, or trillion. Even for sampling applications where the contamination is ...

  • Is the Rotameter Ready for Retirement in Air Sampling/Monitoring Applications?

    The variable area rotameter has been the primary tool utilized for determination of flowrates passing through the air circuitry pathway of air sampling or air monitoring systems for many years. In air sampling applications a pollutant is captured on a collection medium (filter paper, charcoal cartridge, etc.) and taken to a laboratory for determination of the quantity of pollutant on the ...

  • Strategies for the reduction of Legionella in biological treatment systems

    A community-wide outbreak of Legionnaire's disease occurred in Warstein, Germany, in August 2013. The epidemic strain, Legionella pneumophila Serogruppe 1, was isolated from an industrial wastewater stream entering the municipal wastewater treatment plant (WWTP) in Wartein, the WWTP itself, the river Wäster and air/water samples from an industrial cooling system 3 km downstream of the WWTP. ...


    By IWA Publishing

  • Air Sampling During NPP Accident

    There has been considerable interest recently generated regarding emergency air sampling protocols as a result of the Fukushima accident in Japan. A major concern involving air sampling requirements is the accurate determination of gaseous-radioactive iodine species emitted from the NPP to the environment as a result of an accident. During normal NPP operation gaseous radioactive iodine ...


    By F&J SPECIALTY PRODUCTS, INC.

  • Improved Particle Counting Accuracy in Manifold Monitoring

    Abstract Many particle counter users are unaware that – during traditional manifold sampling – the monitor undercounts the ambient particle concentration. Because of the additional vacuum created by the manifold pump, the particle concentration is substantially lower in the air sampled than in the ambient cleanroom air. Unless the system adjusts appropriately, this ...


    By Particle Measuring Systems

  • 400 PPM: Carbon dioxide levels cross a sobering new threshold

    Last week we passed an unfortunate marker when it comes to climate change: concentrations of carbon dioxide (CO2) in the atmosphere have hit 400 parts per million (ppm) near the Arctic. What Does it Mean and Why Should We Care? This ...

  • Soil CO2 Flux Measurements -- Using the LI-8100 System to Collect Air Samples for Estimating Soil Trace Gas Flux

    Air samples can be collected from the same air stream used to measure soil CO2 flux with the LI-8100 Automated Soil CO2 Flux System, for estimating the flux of trace gas, such as methane (CH4), ammonia (NH3), nitrous oxide (N2O), isotopic species, etc. This application note describes a simple method for obtaining air samples from the LI- ...


    By LI-COR

  • PFC Pollution in the office environment

    A new study suggests that exposure to chemical pollution could be a particular problem in the office environment. Researchers in the United States have found a link between Polyfluorinated Compounds (PFCs) in the air of a number of offices and their presence in the blood of the people working there. Polyfluorinated Compounds are water and stain-resistant and they have been used for many ...


    By Commercial Air Filtration

  • Canada Codes for Mining Safety Increase

    According to the Canadian Trade Commissioner Service, Canada remains among the ...


    By Analox Sensor Technology

  • Area Monitoring: Diffusion Sampling

    Indoor and outdoor gas hazards that exist in open areas are usually monitored using diffusion-type sensors. A diffusion sensor has no active sample-drawing system; diffusion sensors rely on the ambient air movement and pressure to deliver the sample to the sensing element. Diffusion-type sensors are a reliable and cost-effective way to monitor open area gas hazards. When installing diffusion ...

  • Assisting microwave digestion systems with Automation for Associated sample workup tasks

    Microwave-assisted sample digestion techniques excel in decomposing tough samples completely by raising the temperature of reagents higher than the boiling point. The key to increasing the boiling point of reagents is their entrapment in Teflon® lined close digestion vessels. The usual digestion process starts with the samples being weighed in Teflon® liners and digestion reagents added ...

  • Protecting Precious Cargo: Safety Monitoring at IVF and Cryogenic Facilities

    Overview In March 2018, at two separate fertility clinics, one in Clevelandand the other in San Francisco, the cryogenic tanks storing eggs and embryos malfunctioned, resulting in devastating losses for couples hoping to conceive children. Nationwide, as of December 2019, there were more than 440 sites that store embryos or eggs in specialized storage tanks of liquid nitrogen, but ...

  • Case study -New media makes RTO natural gas usage a rarity!

    Overview Tekra Corporation has always had an eye on their energy conservation. They are a custom coater of plastic films in Wisconsin where state regulations require over 98% of the Volatile Organic Compounds (VOCs) emitted from their process be destroyed in an oxidizer system. While considering their first oxidizer system, Tekra's Engineers did their homework and invested in an early ...

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