Infrared Analysis Articles

  • Comparing TGA, FTIR and fixed filter infrared analyzers for measuring soot levels in in-service lubricants

    Measuring soot in diesel engine oil has become more important as soot levels get higher due to exhaust gas recirculation. As soot isone of the key indicators for the condition of the oil, diesel engine maintenance programs performing regular soot checks can realize cost savings by extending drain periods and reducing used oil disposal. TGA (Thermal Gravimetric Analysis) is the traditional method ...


    By Spectro Scientific

  • Measurement of Hydrocarbons in Produced Water Using Fiber Optic Sensor Technology (An Alternative to Freon Extraction and IR Analysis Methods)

    Due to the non-availability of Freon, there is need for an alternative method to measure the concentration of hydrocarbons in the effluent from oil water separators in use in the oil industry today. Current methods use solvent extraction and IR analysis of water samples. In this paper we present an alternative method, which does not use any solvents and can provide in-situ analysis of the ...


    By PetroSense, Inc

  • EP-IR: a new technology for IR analysis - introduction to encoded photometric spectrometers and embedded systems

    DISK design 128 or 256 channel standard disk(s) covering the full spectral range based on the fixed grating. Each TRACK integrates the detected spectra over the respective width. Track widths are constant, the resulting integrated bandwidth is f(WL). Max 256 channels per disk (imaging spot size and disk size) Custom track design enables “hard ...


    By CIC Photonics

  • Beer`s law

    The Beer-Lambert relationship (or Beer's law) states that the concentration C is directly proportional to the absorbance A. Generally, this relationship is more often applied by comparing the height of a maximum absorption peak of a reference gas to the height of the corresponding peak in a sample spectrum. However, this technique suffers if the baseline is not accurately known, and it fails ...


    By CIC Photonics

  • Removing Uncertainty

    A number of economic situations such as increased crude oil prices, political unrest in oil producing countries, government subsidies, and technological improvements in ethanol production, have led to increased use of ethanol in automotive fuel. Ethanol is also added to automotive fuel as an oxygenate, octane enhancer and a fuel extender or petrol substitute. It Is the most widely used renewable ...


    By Spectro Scientific

  • Portable IR analyzers: the ideal measurement solution for biofuels blend quality and wastewater testing

    Two challenges facing the biofuels industry involve compliance with blend quality standards and wastewater regulations. According to a study done by the National Renewable Energy Laboratory, 1 the chief problem found with biodiesel blends was inaccurate blend ratios. Retail customers and fleet managers do not typically worry about whether the blend ratio is correct until a problem occurs. For ...


    By Spectro Scientific

  • Adsorption of malathion on thermally treated egg shell material

    Thermally treated egg shell materials were prepared at different temperatures. The samples were investigated by means of FT-IR and thermogravimetric analysis (TGA). The adsorption behaviour of malathion on egg shell and its thermally treated samples was studied using batch method and gave uptake capacities up to 0.964 mmol/g. Adsorption kinetics as well as the adsorption isotherms were discussed. ...


    By IWA Publishing

  • Biosorption of Co(II) by immobilised Pleurotus ostreatus

    Cobalt biosorption by Pleurotus ostreatus immobilised in calcium alginate has been studied. The experimental results showed that immobilised Pleurotus ostreatus were effective for removing Co(II) from aqueous solution. Co(II) biosorption equilibrium was approached within 120 min. Pseudo second-order kinetic equation was applicable to all the sorption data over the entire time range. ...


    By Inderscience Publishers

  • New ASTM Test Method Offers Quick and Easy Oil and Grease Measurement for Water and Soil Samples

    Onsite Field Measurement of Oil and Grease A quick and easy field analysis method for determining oil and grease concentration levels is important for both offshore oil platforms and soil remediation sites.. Prior to the Montreal Protocol, infrared (IR) analysis using Freon as an extraction solvent was a widely used field and laboratory method. In 1999, the U.S. EPA promulgated Method 1664A ...


    By Spectro Scientific

  • Application of new least-squares methods for the quantitative infrared analysis of multicomponent samples

    Improvements have been in previous least-squares regression analyses of infrared spectra for the quantitative estimaiton of conecntratons of multicomponent mixtures. Spectral baselines are fitted by least-squares methods, and overlaping spectral features are accouted for in the fitting procedure. Selection peaks above a threshold value reduces computation time and data storage requirements. Four ...


    By CIC Photonics

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