non-dispersive infrared detection Articles

  • TOC Analysis for Standard Methods 5310B: High-Temperature Combustion Method

    Introduction Total Organic Carbon (TOC) is a rapid method that analyzes for organic carbon and expresses the result as the amount of carbon found. It is a non-specific method unable to distinguish between various organic species and only indicates that organic carbon compounds are present. Organic carbon analyzers operate by the determination of the amount of total carbon present in a ...

  • Measuring IR Light and Near-IR Light

    Infrared (IR) light emits a broad range of non-visible wavelengths in the electromagnetic spectrum. Applications for infrared, including near-infrared, are defined by the respective IR bands during output. For example, LIDAR (Light Detection and Ranging) equipment uses 1,000 nm and 1,550 nm IR bands while surveying an area. In the military sector, 850 nm, 1,060 nm and 1,500 nm (and up) are used ...


    By Larson Electronics LLC

  • Selecting and Placing Gas Detectors for Maximum Application Protection

    Many industrial processes involve dangerous gases and vapors: flammable, toxic, or both. With the different sensing technologies available, and the wide range of industrial applications that exist, selecting the best sensor and locating them properly for the job at hand can be a challenge. To ensure a high level of safety, know the latest sensing technologies, which technology is best for the ...

  • Support to Aviation Control Service (SACS): an online service for near-real-time satellite monitoring of volcanic plumes

    Volcanic eruptions emit plumes of ash and gases into the atmosphere, potentially at very high altitudes. Ash-rich plumes are hazardous for airplanes as ash is very abrasive and easily melts inside their engines. With more than 50 active volcanoes per year and the ever-increasing number of commercial flights, the safety of airplanes is a real concern. Satellite measurements are ideal for ...

  • The Pitfalls of Process TOC analysis and how to avoid them case study

    Since the introduction of Total Organic Carbon (TOC) Analyzers by Dow, Union Carbide and Automated Environmental Systems in thel960,s,l-5\ they have proven to be an invaluable tool in the environmental and process monitoring fields. While technologies have advanced since then, certain performance characteristics required for true process control have been notably absent. The purpose of this paper ...


    By TOC Systems, Inc.

  • Bioaccumulation and toxicity of single walled carbon nanotubles (SWNT) to benthic organisms at the base of the marine food chain

    As the use of single‐walled carbon nanotubes (SWNT) increases over time, so does the potential for environmental release. Our research aimed to determine the toxicity, bioavailability and bioaccumulation of SWNT in marine benthic organisms at the base of the food chain. The toxicity of SWNT was tested in a whole sediment exposure with the amphipod Ampelisca abdita and the mysid Americamysis ...


    By John Wiley & Sons, Ltd.

  • Case study - Altpapier Sortierung Dachau Gmbh – Germany - Sensor based optical sorting for paper de-inking

    Customer ASD - Altpapier Sortierung Dachau GmbH - are specialists in recycling of waste paper. The company produces high quality paper grades for their industry partners. Requirements The requirements are maximised gain output with the highest purities of 97% of sorted paper grades from waste paper with less than 8% de-inking loss overall. ...

  • Characterisation of RO fouling in an integrated MBR/RO system for wastewater reuse

    Membrane filtration has gradually gained acceptance as the preferred pre-treatment for reverse osmosis (RO). In this paper, an integrated membrane bioreactor (MBR)/RO system for wastewater reuse treating real sewage water has been evaluated and the RO fouling has been characterised. The MBR achieved low values of organic matter, total nitrogen, PO43−, total organic carbon, ...


    By IWA Publishing

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