Determination of potassium in fatty acid methyl esters applying an ion-selective potassium electrode

✍ Scribed by P. Rapta; J. Paligová; H. Rotheneder; J. Cvengroš

• Book ID: 111491069
• Publisher: Versita
• Year: 2007
• Tongue: English
• Weight: 214 KB
• Volume: 61
• Category: Article
• ISSN: 0366-6352
• DOI: 10.2478/s11696-007-0044-1

✦ Synopsis

Abstract

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.