Bad metals in biodiesel

Skip to Navigation

Blog Post

  • Published: Dec 11, 2013
  • Author: Steve Down
  • Channels: X-ray Spectrometry / Chemometrics & Informatics / Proteomics / NMR Knowledge Base / MRI Spectroscopy / Raman / UV/Vis Spectroscopy / Atomic / Infrared Spectroscopy / Base Peak

View comments on this post

Four metals which are no good for biodiesel can be measured simultaneously by a novel atomic emission spectroscopic technique using a tungsten coil.. The novel procedure was devised by scientists in the USA and Brazil and is described in Analytica Chimica Acta.

Residual sodium and potassium are usually found in biodiesel because their hydroxides are used in the transesterification process. However, they contribute to the build up of ash in the engine to cause corrosion. Vanadium and chromium increase the levels of pollutants during biodiesel combustion. The new method used a tungsten coil removed from a microscope light bulb to break down the complex biodiesel matrix before atomising the elements for analysis.

The huge advantage of the method is that no sample preparation is required apart from dilution of the fuel with methanol or ethanol. With a heating cycle of 150 s, the detection limits of all four metals were below 100 µg/kg and the tungsten coils last for up to 50 runs, giving a fast and cheap method.


There are currently no comments on this post.

Comment Form

You have to log in to comment on this post.

Log in using the form at the top of the page or register here.

Social Links

Share This Links

Bookmark and Share


Suppliers Selection
Societies Selection

Banner Ad

Click here to see
all job opportunities

Copyright Information

Interested in separation science? Visit our sister site

Copyright © 2018 John Wiley & Sons, Inc. All Rights Reserved