Biofuel Industry News

Analysis Method for P, S and Cl in Bio-diesel and Bio-ethanol

Mar 12 2013 Comments 0

Rigaku Corporation (USA) recently announced the publication of a new application note describing the quantitative analysis of trace amounts of controlled elements in different base oils, including bio-diesel and bio-ethanol, by wavelength dispersive X-ray fluorescence (WDXRF) spectrometry.

Rigaku application note XRF 5032 describes quantitative analysis of trace amounts of phosphorus (P), sulphur (S) and chlorine (Cl) in biofuels using the Rigaku Primini Biofuel WDXRF elemental analyser. The report includes complete information regarding sample preparation, method calibration and repeatability.

In addition to increased efficiencies in the use of conventional fossil fuels, environmental concerns have led to greater use of non-fossil fuels such as bio-ethanol and bio-diesel. As with conventional fuels, the levels of phosphorus, sulphur and chlorine in biofuels have been reduced to protect engines and catalysts and prevent air pollution.

In the analysis of biofuels, oxygen levels and carbon/hydrogen ratios affect the analysis results of the target elements. Rigaku has developed a new method to correct for this influence by analysing scattering X-rays from samples.

For the published method, analysis was performed using the Primini Biofuel WDXRF spectrometer, a bench-top analyser optimised for sub-ppm detection limits of P, S and Cl, The report describes the performance of the Primini Biofuel spectrometer using the Lite Matrix Correction method. In Lite Matrix Correction, an additional analysing crystal and detector are added to the spectrometer for measurement of the X-rays. The method requires only standards for elements to be analysed and needs no special standards for correction. By applying the method, accuracy can be significantly improved, even for different oil matrices. Additionally, the same calibration can be used for both bio-diesel and bio-ethanol.

The results demonstrate that the benchtop Primini Biofuel WDXRF spectrometer can give precise determination for trace levels of P, S and Cl in different base oils.

Read comments0

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.


Digital Edition

Petro Industry News October/ November 2017

October 2017

Fuel for Thought - Restek Wins Company of the Year ASTM News - New Standard Helps Meet Need for Hydrocarbon Impurity Testing PEFTEC Preview - Excitement Builds for PEFTEC 2017 - Det...

View all digital editions

Events

PEFTEC 2017

Nov 29 2017 Antwerp, Belgium

Tank Storage Germany

Nov 29 2017 Hamburg, Germany

ASTM - D02 Meeting

Dec 03 2017 Houston, Tx, USA

Saudi International Lab Expo

Dec 04 2017 Riyadh, Saudi Arabia

Iraq Oil & Gas Show

Dec 05 2017 Basra, Iraq

View all events