chemiluminescence Articles

  • Chemiluminescent examination of abiotic oxidative stress of watercress

    Watercress (Nasturtium officinale) is an aquatic plant that readily bioaccumulates heavy metals that may be found in contaminated aquatic systems. Toxic effects of contaminants on the physiological processes cause changes in oxidase enzymatic activity in watercress, which can be measured using a luminometer. The luminometer uses the reaction produced when peroxidases break down hydrogen ...


    By John Wiley & Sons, Ltd.

  • Chemiluminescent examination of abiotic oxidative stress of watercress

    Watercress (Nasturtium officinale) is an aquatic plant that readily bioaccumulates heavy metals that may be found in contaminated aquatic systems. Toxic effects of contaminants on the physiological processes cause changes in oxidase enzymatic activity in watercress, which can be measured with a luminometer. The luminometer uses the reaction produced when peroxidases break down hydrogen ...


    By John Wiley & Sons, Ltd.

  • Investigation on the spontaneous combustion of refuse-derived fuels

    Refuse-derived fuel (RDF), a high-caloric material, is used by various combustion processes, such as power plants, as alternative fuel. Several explosion accidents, however, possibly initiated by the spontaneous combustion of stored RDF, have been reported in Japan. Therefore the spontaneous combustion of RDF prepared from domestic garbage was investigated using chemiluminescence. RDF samples ...


    By SAGE Publications

  • Overview of ECO PHYSICS Products and Markets

    ECO PHYSICS AG manufacturers a wide variety of chemiluminescence NOx analyzers for industry, combustion research, atmospheric research and medical research. A look at our markets and products gives an impression of our ...


    By ECO PHYSICS INC.

  • Automated techniques for real-time shipboard determination of dissolved trace metals in marine surface waters

    This review compares methods that are currently employed for shipboard analysis of trace metals in seawater voltammetric, chemiluminescence and colorimetric methods. Instrumentation and methods are described for collecting surface seawater using pumping, with subsequent on-line analysis by stripping voltammetry. The review is illustrated with data for oceanic and coastal distributions of ...


    By Inderscience Publishers

  • BLUE LIGHT CONVERTER SIGNALS WAY FORWARD FOR NO2 MEASUREMENT

    Local authorities seeking more accurate NO2 readings should consider using analysers which incorporate ‘Blue Light Converters’ says air quality monitoring specialists Enviro Technology.   This comment comes following a presentation held at the Royal Society of Chemistry / AAMG Conference in December 2010 by EMPA (Switzerland) – an independent research and services ...

  • Continuous Emissions Monitoring Equipment – Guidance & Selection

    There has never been such a wide range of analysers and systems available for continuous emissions monitoring as there is today. In the UK there are over 12 manufacturers and distributors offering CEMS (continuous emissions monitoring systems) using a variety of technologies including UV and IR absorption, FTIR, DOAS, chemiluminescence and photoacoustic spectroscopy (PAS). The majority of CEMS ...

  • Research NOx Analyzers

    ECO PHYSICS provides environmental experts with exceptionally sensitive and precise NOx measurement instruments. Please take a look at our newest press release on our research NOx analyzers below. Bound by the same laws of nature, ecology and physics are close associates in an on-going battle to preserve air quality around the globe. One of our planet's champions is Swiss-based ECO PHYSICS. The ...


    By ECO PHYSICS INC.

  • Field Method Comparison between Passive Air Samplers and Continuous Monitors for VOCs and NO2 in El Paso, Texas

    This study evaluates the performance of Model 3300 Ogawa Passive Nitrogen Dioxide (NO2) Samplers and 3M 3520 Organic Vapor Monitors (OVMs) by comparing integrated passive sampling concentrations to averaged hourly NO2 and volatile organic compound (VOC) measurements at two sites in El Paso, TX. Sampling periods were three time intervals (3-day weekend, 4-day weekday, and 7-day weekly) for three ...


    By Ogawa & Company, USA, Inc.

  • Transition metals cobaltites spinel for depollution of NOₓ emissions using SCR technology

    Abstract The catalytic performance of various transition metal (M = Cu, Mn, and Ni) cobaltites prepared by nanocasting method were investigated for the selective catalytic reduction (SCR) of NO under lean burn conditions. KIT-6 was used as a hard template in the nanocasting method for preparation of catalysts. The catalyst samples were characterized by various techniques such as ...


    By ECO PHYSICS AG

  • Eclox Rural Water Association Helps Assure Water Security Statewide with Rapid Response Water Test Kit

    The ability to rapidly monitor the quality of U.S. source water for contamination has never been more important than it is in today’s security-sensitive environment. The Delaware Rural Water Association (DRWA), located in Milford, Del., is a non-profit trade organization, one of 47 state affiliate members of the National Rural Water Association. The mission of the DRWA is to improve the quality ...

  • Why measuring the ambient NO2 without conversion?

    Nitrogen oxides NOx are pollutants that may have particular impact in terms of greenhouse gases, acidifying air etc ... issuance increased significantly since 1950 with the massive development of transport and industries. It therefore becomes necessary to provide measures always safer these pollutant gases, and to know the reliability of results. Currently, 60% of emissions of NO and NO2 are ...


    By Environnement S.A

  • Analytik Jena AG: Flexibility beyond any limits - multi N/C

    With a multi N/C analyzer the parameters TOC, NPOC, POC, TC, TIC and TNb can be measured quickly, easily and without any conversion. This is possible thanks to the perfect combination of an efficient sample digestion technology, VITAFlow Management System and Focus Radiation NDIR detector. TOC and TNb are measured truly simultaneously, with a single injection and without any exchange of catalyst ...


    By Analytik Jena AG

  • Flexibility beyond any limits - multi N/C

    With a multi N/C analyzer the parameters TOC, NPOC, POC, TC, TIC and TNb  can be measured quickly, easily and without any conversion. This is possible thanks to the perfect combination of an efficient sample digestion technology, VITAFlow Management System and Focus Radiation NDIR detector. TOC and TNb  are measured truly simultaneously, with a single injection and without any exchange ...


    By Analytik Jena AG

  • Synthesis and characterization of a novel organic nitrate NDHP: Role of xanthine oxidoreductase-mediated nitric oxide formation

    Abstract In this report, we describe the synthesis and characterization of 1,3-bis(hexyloxy)propan-2-yl nitrate (NDHP), a novel organic mono nitrate. Using purified xanthine oxidoreductase (XOR), chemiluminescence and electron paramagnetic resonance (EPR) spectroscopy, we found that XOR catalyzes nitric oxide (NO) generation from NDHP under anaerobic conditions, and that thiols are not ...


    By ECO PHYSICS AG

  • Measurement of temperature gradients through local extinction using Raman scattering spectroscopy

    Measurements of temperature in laminar flames with localised extinction points were made using line imaging of spectrally resolved laser Raman scattering through the extinction process. A fit to the nitrogen scattering spectrum was used to determine temperature with an accuracy of 30 K. Temperature gradients through the extinction process were measured as the flame strength prior to extinction ...


    By Inderscience Publishers

  • Measurement of ambient NH₃ over Bay of Bengal during W_ICARB campaign

    Abstract Concentrations of ambient NH3, NO, NO2 and SO2 were measured over Bay of Bengal (BoB) during 28 December 2008 to 25 January 2009 to study their diurnal variation and relationship of NH3 with other trace gases over BoB. The measurements were done under the winter phase of Integrated Campaign on Aerosols and Radiation Budget ...


    By ECO PHYSICS AG

  • Popular analysers are portable and rentable

    The MCERTS approved HORIBA PG-250 has been one of the most popular  instruments in Ashtead Technology’s fleet of rental equipment for a number of  years. Jay Neermul, the company’s Environmental Product Manager says “This  is because it is able to analyse CO, NO/NOx, SO2 and CO2 using standard  reference methods in a portable instrument that can be easily and ...


    By Ashtead Technology Ltd

  • Special price offered for the new NO2 CAPS AS32M analyzer

    New: the AS32M analyzer – approved by the US EPA – gets the TÜV certification for the measurement of NO2. Providing accurate and very precise ...


    By Environnement S.A

  • 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

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