ambient analyzer Articles

  • Economic Evaluation of Air Quality Targets for CO and Benzene

    The study is to identify and estimate the costs and benefits of meeting ambient air quality standards for carbon monoxide (CO) and benzene in the EU. The study should take the range of scientifically-based limit values for ambient air quality as given and analyze the costs and benefits of attaining these standards. These costs and benefits should be compared with the costs (loss of benefits) of ...

  • Study of polycyclic aromatic hydrocarbons in atmospheric particulate matter of an urban area with iron and steel mills

    Polycyclic aromatic hydrocarbons (PAHs) were analyzed from ambient air particulate matter ...


    By John Wiley & Sons, Ltd.

  • Surface roughness vision measurement in different ambient light conditions

    Machine vision method was used to measure the surface roughness for different Φ38 mm grinding axes in different ambient light conditions. To analyse the effect of ambient light, a method based on the grey-level co-occurrence matrix was applied at the first step. Then, a new calculation method was proposed to minimise the effect of ambient light during measurement. At the calibration stage, ...


    By Inderscience Publishers

  • Weekday/Weekend Differences in Ambient Air Pollutant Concentrations in Atlanta and the Southeastern United States

    Abstract The authors quantified changes between mean weekday and weekend ambient concentrations of ozone (O3) precursors (volatile organic compounds [VOC], carbon monoxide [CO], nitric oxide, and oxides of nitrogen [NOx]) in Atlanta and surrounding areas to observe how weekend precursor emission levels influenced ambient O3 levels. The authors analyzed CO, nitric oxide (NO), and NOx ...

  • The CO2 and SO2 capture capability of two Greek limestones during repeated thermal cycles

    In the present study, two Greek limestones from the Megalopolis and Florina areas were used to capture CO2 and SO2. The regeneration ability and decay of the limestone samples were investigated through sorption-calcination cycles in a thermogravimetric analyser operated at ambient pressure. The effects of the sorption time (3, 8 and 30 min), reaction temperature (750°C and 850°C) and particle ...


    By Inderscience Publishers

  • LinkBus RIMS case study

    For a variety of reasons, decreasing resources are causing plant operators in the process and utility industries to look for more efficient ways of monitoring and servicing their instrumentation. The analyzer maintenance department may have been reduced in size, merged with another department or perhaps no longer exists at all, and reassignments and relocation of staff can lead to a loss of ...


    By AMETEK Process Instruments

  • Source contribution of atmospheric aerosols in Bangkok metropolitan area by CMB8 receptor model

    The CMB8 model was applied for source apportionment of particulate matter in Bangkok area. The 24 h of ambient data were collected and analysed for elemental composition during December 1996 to January 1997 by high volume air samplers at a station in Bangkok, Thailand. Seven source profiles and the average mass concentrations of 42 ambient data were used to run the chemical mass balance ...


    By Inderscience Publishers

  • Development of dry deposition velocity model for a typical medium level Indian city Karaikudi

    In this study, day and night dry deposition samples were collected with Eagle II arrangement of dry deposition plates. Karaikudi, one of the medium level city in India has been the chosen as area of study. Sampling locations were classified as zone1, zone2 and zone3. Wind speed was also recorded during sampling. Particle size was determined by using X–ray diffractometer (XRD). Relation between ...


    By Inderscience Publishers

  • Exhaust gas treatment by an atmospheric pressure microwave plasma

    A microwave process for treating exhaust gases from internal combustion engines is presented. The exhaust gases are ionised by microwave energy at 2.45 GHz and the resultant plasma jet discharges into ambient air and exhaust gas environment. A gas analyser was used to measure the change in exhaust gas composition due to the influence of the plasma. Large decreases in CO2, CO and hydrocarbon ...


    By Inderscience Publishers

  • Analysis of Natural Gas Products by GC / TCD / FID

    The complex mixture of condensible hydrocarbons and permanent gases in a natural gas product has historically been separated on gas chromatographs equipped with dual columns and a switching valve. The light gases are separated from heavier compounds on a molecular sieve column, which is then backflushed onto a suitable column to separating the rest of the mixture. The Buck Scientific Model 910 ...


    By Buck Scientific Inc

  • Portable Combustion Analyzers as Safety Devices - Case study

    Portable Combustion Analyzers Can Be Used as Safety Tools for Technicians in Residential or Commercial HVAC Applications With all residential and commercial boilers, furnaces, and heaters, there is an inherent risk that cracks in the heat exchanger, improperly maintained ducting systems, or other malfunctions can cause combustion gases to leak into the living or working environment ...

  • Treatment of slaughterhouse wastewater in upflow anaerobic sludge blanket reactor

    The performance of an upflow anaerobic sludge blanket (UASB) reactor operated at ambient temperature (20.9–25.2°C) was analysed for the treatment of slaughterhouse wastewater previously pre-treated for solid separation. The experimental work was carried out in a reactor with 15 L effective volume. Four organic loads were applied and the process performance was evaluated. The COD removal rate ...


    By IWA Publishing

  • CPI Case Study - Safe-OX+ and A50

    The Centre for Process Innovation (CPI) is a UK-based technology innovation centre and the process arm of the High Value Manufacturing, Catapult. CPI enables businesses to develop, prove, prototype and scale up the next generation of products and processes.  CPI operates across a broad range of technologies including; Industrial ...


    By Analox Sensor Technology

  • Solid waste management in Patna – analyses of ambient air and ground water pollution

    Municipal Solid Waste (MSW) in Patna is disposed of in an unscientific manner without considering environmental impacts. The wastes are dumped in the low-lying areas without compliance of the MSWM Rules, 2000. The dumped wastes are mixed with biomedical wastes making it hazardous. Ambient air quality and ground water were analysed at two dump sites to study the possible impacts of MSW. The ...


    By Inderscience Publishers

  • Evaluation of the test of significant toxicity for determining the toxicity of effluents and ambient water samples

    The test of significant toxicity (TST) is a hypothesis‐testing approach based on bioequivalence developed by the U.S. Environmental Protection Agency (U.S. EPA) for analyzing whole‐effluent toxicity (WET) and ambient toxicity data. The present study compares results of acute and chronic toxicity tests of effluent, storm‐water, and ambient (i.e., receiving‐water) samples using both the TST and ...


    By John Wiley & Sons, Ltd.

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

    A multi-agency Air Quality Cell (AQC) was first 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 Agency (EA), Public ...


    By Gasmet Technologies Oy

  • Water Quality Models

    ' In order to determine the impacts of a particular discharge on ambient water quality, it is usually necessary to model the diffusion and dispersion of the discharge in the relevant water body. The approach applies both to new discharges and to upgrading of existing sources. This note provides guidance on models that may be applicable in the context of typical Bank projects.' Introduction ...


    By The World Bank

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