An easy and inexpensive method of
potassium determination in
fatty acid
methyl esters (FAME) applying an ion-selective potassium
electrode (ISE-K) is presented. FAME are considered alternative fuel for diesel
engines. Simple apparatus and procedure were developed to avoid contact
of ester
samples with the sensitive ISE-K membrane, which can damage
the ISE
membrane surface in long time operation. Using different FAME
samples with a wide range of known potassium
content a calibration
curve was constructed. Among all samples, ISE-K satisfactory predicted
potassium content in FAME as identified by the AAS reference method.
Full paper is available at www.springerlink.comChemical Papers 61 (5) 337–341 (2007)
More abstracts about the Determination of potassium in fatty acid methyl esters applying an ion-selective potassium electrode