|Abstract Title:||Specification Analysis of Gasoline by high-resolution ICP-OES|
|Session Choice:||Molecular and Elemental Spectrosopy|
|Presenter Name:||Dr Sebastian Wuenscher|
|Co-authors:||Dr Margrit Killenberg|
Dr Sandro Spiller
Dr Jan Scholz
Abstract Information :
Volatile Organic Compounds (VOC) such as gasoline and naphtha are subject to specification analysis in terms of trace elemental analysis of environmental pollutants (e.g., lead) and compounds that are potentially harmful to engines and turbines. Elements such as vanadium, iron, nickel, or silicon contribute to corrosion processes and therefore bear the risk of engine or sensor failure in automobiles or aircrafts. The value of petroleum is often defined by the specification of such elements. Typical analytical challenges are the poor short-term and long-term stability due to the high volatility of the samples and to the high risk of soot formation caused by the high carbon content of the samples. Furthermore, the carbon-based emission complicates the spectra as-recorded and bears the risk of severe spectral interferences. Conventional ICP-OES instrumentation is forced to use less sensitive lines for many analytes, since interferences on primary lines cannot be resolved properly. Here, we describe the use of a high-resolution ICP-OES, the PlasmaQuant PQ 9000 Elite, for the specification analysis of undiluted gasoline. The high spectral resolution allows for an interference-free measurement of trace elements on their most sensitive emission lines. Hence, limits of detection in the low Âµg/kg range can routinely be achieved with great long-term stability.