carbon dioxide sensing Articles

  • Effect of chemical oxidation on the gas sensing properties of multi-walled carbon nanotubes

    The effect of chemical oxidation on the gas sensing properties of multi-walled carbon nanotubes (MWNT) is presented in this paper. The MWNT were chemically oxidised in a mixture of concentrated sulphuric and nitric acids. The oxidation time was varied from 4 h to 12 h. X-ray photoelectron spectroscopy was used to study the effect on the chemical composition of the nanotube surface. The results ...


    By Inderscience Publishers

  • Why instrument hire makes occupational safety sense

    Background Decisions concerning the acquisition of occupational safety monitoring instrumentation are often made by operational staff that may not have visibility of the full financial implications of their choices. The following article will examine the factors affecting these decisions and explain why a strategic decision to hire instrumentation can deliver substantial and wide-ranging ...


    By Ashtead Technology Ltd

  • Remote sensing of particulate pollution from space: Have we reached the promised land?

    This paper follows presentation and publication of the Hoff and Christopher 2009 Critical Review and represents an integration of discussants’ views of their paper. The discussants’ comments are organized beginning with a note on the history of satellite sensing, followed with a brief discussion of the strengths and weaknesses of satellite observations relative to air quality management needs. ...

  • Efficiency’s role in carbon cap-and-trade

    We hear a lot about how efficiency will play an increasingly important role as the United States undertakes efforts to reduce carbon dioxide emissions. But how does that play out in a practical sense under cap-and-trade programs?The Offset Quality Initiative provides insight in a new white paper on greenhouse gas offsets: ...

  • Municipal Solid Waste – Key to a Low Carbon Economy

    A newly released report has found the waste sector has a key role to play in the development of a low carbon economy and the reduction of greenhouse gases (GHGs). This report comes in advance of the UN Climate Conference in Paris, which will take place in December. The report was ...


    By Zero Waste Europe

  • Eastern states ready for big EE boost

    Several eastern states will see a large injection of cash for energy efficiency after the nation’s first mandatory auction of carbon dioxide allowances September 25.The auction marks the United States entry into the world of capping and trading carbon dioxide emissions. Ten states are participating in the program, known as the Regional Greenhouse Gas Initiative (RGGI), or more commonly called ...


    By Energy Efficiency Markets

  • Gas Detection and Monitoring Systems

    In greenhouse applications, the accurate measurement of a number of environmental parameters such as carbon dioxide concentration, temperature, light intensity, water, humidity, pH and nutrient levels using sophisticated sensors is used to create a controlled environment for optimising plant growth rates while minimising energy usage. Carbon dioxide concentration is also one of the best ...


    By Edinburgh Instruments Ltd

  • TDLAS Gas Detection Instrumentation

    PKL Technologies Inc. manufactures tunable diode laser (TDLAS) based gas detectors and monitors. Spectra-1 open path gas sensors are used in a variety of environmental and safety remote sensing applications. Spectra-1 gas sensors have been designed in a compact, easy to use, robust and portable format. Spectra-1 has been developed using proprietary hardware and software, to produce a low cost ...


    By PKL Technologies Inc.

  • CO2 vs. VOC Sensors for IAQ - What`s the Difference

    People sometimes ask about the differences between VOC (Volatile Organic Compounds) sensors and CO2 sensors. While both can be used to measure indoor air quality (IAQ), these sensors are not interchangeable. They measure very different things. CO2 sensing technology by IR (infrared) is stable and is not subject to the short-term, random drift found in air quality sensors. Most IR carbon ...


    By CO2 Meter, Inc.

  • Application of nanocrystalline metal oxide gas sensors for air quality monitoring

    Increasing concern regarding health effects caused by air pollution, together with the limited spatial resolution achievable with conventional monitoring stations, have driven efforts to develop inexpensive metal oxide gas sensors for air quality measurements. The sensing mechanism is dependent on physicochemical reactions between adsorbed gas molecules and oxygen species on the oxide surface, ...


    By Inderscience Publishers

  • Wakening the serpent: reflections on the possible modification of the Euratom Treaty

    Directives acquired in the framework of the Kyoto Protocol and the fact that the nuclear energy production does not generate carbon dioxide, might point to a recovery by the nuclear energy industry, which would be possible only within a more or less lengthy process of social confrontation in the Member States. While new scenarios for the European energy supply are being configured, the nuclear ...


    By Inderscience Publishers

  • Steering Environment Preservation with Capacity Building Training

    We are using pesticide in our cultivation in the name of green revolution. This kind of initiatives is generating environmental burdens and has been already identified as boomerang for our existence. Pesticide plays important role in eliminating species from the nature and damaging our food security cycle. Using pesticide is one common example of practicing risky behaviors in our modern life that ...


  • Intellisenc Building Air Quality Controllers control CO2, CO, VOC, O3, Humidity and temerpature.

    The quality of the air we breathe indoor (Indoor Air Quality, IAQ) is typically defined by the air chemical or gas composition and particulates. The sensors available today for sensing the gas composition of IAQ have many features and options. There is a wide application base for IAQ sensing with the most common being the regulation of HVAC ventilation systems for lower energy cost. Using an IAQ ...


  • An Application of Tomographic Reconstruction of Atmoshperic CO2 Over a Volcanic Site Based on Open Path IR Laser Measurements

    Abstract—The southern area of Italy is characterized by the presence of many active volcanic areas. In Pozzuoli (Naples, Italy), an urban area characterized by high volcanic risk, a gas emitting site is present. An high percentage of CO2 is emitted, whose atmospheric concentration measurement is an important task in many environmental and scientific applications. In this paper, we describe the ...


    By Boreal Laser Inc.

  • Mr. Pickens, what about plug-in hybrids?

    T. Boone Pickens deserves kudos for his attention-grabbing television campaign aimed at helping America kick the oil habit. The billionaire energy fund manager can stop the most dedicated channel surfer mid-click when he proclaims that our spending on foreign oil could soon become the largest transfer of wealth in human history.Pickens’ plan has two parts. The first calls for more use of wind ...

  • Data assimilation for crop yield and CO2 fixation monitoring in Asia by a photosynthetic sterility model using satellites and meteorological data

    This study assimilates satellite and meteorological data to monitor grain yields and CO2 fixation by developing a photosynthetic-sterility model that integrates the Asian scale of meteorological data such as solar radiation, air temperature effects on photosynthesis and the Normalised Difference Vegetation Index (NDVI) with a Satellite Pour l'Observation de la Terre (SPOT) VEGETATION sensor. ...


    By Inderscience Publishers

  • What is an `IAQ Profile`?

    The 'IAQ Profile' is a visual presentation of indoor air quality. PPM Technology's range of IAQ Monitors enable continuous monitoring of Indoor Air Quality; this precisely describes changes in concentration levels of selected air quality parameters over a period of time.  The IAQ Profile provides the knowledgebase and database for improving indoor air quality efficiently and ...


    By PPM Technology

  • Intellisenc Greenhouse Controllers for control of CO2, Humidity and temperature

    Optimum and accurate CO2 level is important for effective and efficient plant growing. Too much CO2 creates diminishing return on expense and too little fails to utilize your capital investment. Optimum control of all facets of the growing environment results in high productivity at less costs. Plants need to be able to shed moisture to maintain their capacity to draw in nutrients from the soil. ...


  • Is your company using Nitrogen or other Cryogenic gases? Why PureAire Recommends an O2 Deficiency Monitor for Safety.

    PureAire Monitoring Systems, Inc. focuses solely on safety in the workplace, and in laboratory environments. Oxygen deficiency monitors are used in areas using Nitrogen, Helium, Argon, and Carbon Dioxide. PureAire strongly recommends an oxygen deficiency monitor to be installed anywhere cryogenic gases are being stored. The purpose of an oxygen monitor is to alert employees in the immediate area ...

  • Green existing buildings is easier (and cheaper) than you think

    Commercial, industrial, institutional, and residential buildings are the most significant users of energy in the United States. Almost 70% of all generated electricity and about 12% of available potable water goes to support use and occupancy of buildings. Buildings play a major role in the quality of life for the 307 million people who go in and out of them every day and have a significant ...

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