NOx Monitoring Articles

  • Exceeding expectations: Safer and better – for all!

    Elkem has production facilities worldwide and is a global leader in environment-friendly production. In order to reduce emissions to a minimum and increase the employee’s safety at the facilities, Elkem cooperate with NEO Monitors. At Elkem's plant in Salten, Norway, silicon is produced from quartz in a high temperature process using coal and coke as reducing agents. The silicon is ...


    By NEO Monitors AS

  • Characterization and source identification of stormwater runoff in tropical urban catchments

    The characteristics of urban stormwater pollution in the tropics are still poorly understood. This issue is crucial to the tropical environment because its rainfall and runoff generation processes are so different from temperate regions. In this regard, a stormwater monitoring program was carried out at three urban catchments (e.g. residential, commercial and industrial) in the southern part of ...


    By IWA Publishing

  • Analysing the spatial variability of ground-level ozone in the UK using a generalised additive model

    A generalised additive model is developed using annual mean ozone concentration as dependent variable and Cartesian coordinates, altitude, proximity to coast and nitrogen oxides (NO x ) concentration as independent variables, which are all easy to obtain and apply. The model shows high concentrations at higher altitudes and closer proximity to coasts and an underlying south easterly trend in ...


    By Inderscience Publishers

  • Passive samplers for air quality monitoring in a Brazilian university

    The aim of this paper was to evaluate the applicability of passive samplers for the monitoring and diagnosis of air pollution at Passo Fundo University, focusing on atmospheric pollutants NO 2 and O 3 . The samplers were built in accordance with already verified methodologies and were placed in several locations in the university campus, namely: energy generator, pool heating boiler, ...


    By Inderscience Publishers

  • Modelling ozone levels in an arid region – a dynamically evolving soft computing approach

    The primary pollutants may contribute to the increase of ozone levels in the arid regions. Complex interactions between the pollutants and the meteorological variables make the study of this phenomenon more exigent. The dynamically evolving neural fuzzy inference system (DENFIS), as an example of soft computing models, allows the online evolution of both the knowledge and the inference ...


    By Inderscience Publishers

  • Dirty Work Made Clean: Volatile Organic Compound Recordkeeping

    Picture this scenario: three facilities - two operating under Title V that are major sources of NOx emissions; situated in the second most populated urban area in the United States and one of the smoggiest; heavily regulated by state air quality control agencies; having to comply with stringent monitoring of gases and chemicals on a daily basis; tracking all environmental data in a dated and ...


    By Enviance, Inc.

  • 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

  • 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

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