Lower Resolution IR Spectroscopy Can Provide Better Quantitative Biodiesel Measurements

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Source: Spectro Scientific

April 29, 2011, E. Norwalk, CT -- A new White Paper published by Wilks Enterprise, Inc. illustrates that lower resolution infrared (IR) spectroscopy can provide higher performance for quantitative biodiesel measurements. Resolution is often used as a yardstick of instrument performance in Infrared Spectroscopy.  This is especially true when the measurements are energy limited as they are in the mid-infrared.  For example, in both the European and ASTM standards - EN14078 and ASTM D7371 - for the determination of biodiesel in diesel fuel, there is a minimum 4 cm-1 resolution required which is a relatively high resolution.  While resolution is important to qualitatively examine specific components and attributes of a sample, quantitative analysis does not always benefit from higher resolution. In fact, as has been pointed out in the past by Hart and Griffiths, a lower resolution instrument will actually perform better for quantitative measurements where absorbance peaks are well defined and not overlapping and is demonstrated with the analysis of biodiesel in diesel.

For a free copy of the White Paper, please contact:  Wilks Enterprise, Inc., 25 Van Zant Street, Ste. 8F, E. Norwalk, CT  06855 USA, TEL: 203-855-9136, FAX: 203-838-9868, Email: info@WilksIR.com,
Web Site -- www.WilksIR.com, or to download the paper -- http://www.wilksir.com/pdf/WhitePaper_LowerRes_IR_Biodiesel.pdf.
  
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About Wilks Enterprise, Inc.
Headquartered in E. Norwalk, Connecticut, Wilks Enterprise specializes in easy-to-use, portable mid-infrared analyzers for specific measurement applications.  All Wilks analyzers have been specifically designed for on-site use by non-technical personnel and are used for a wide variety of applications in the biofuels, environmental, petrochemical, quality control, and manufacturing industries.  These portable analyzers enable analytical measurements to be made in the field, helping to eliminate the wait for off-site lab results.

 

 

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