|Abstract Title:||Advances in Trace Detectability and Long-Term Signal Stability for the Direct Analysis of Gasoline by High Resolution ARRAY ICP-OES.|
|Session Choice:||Analytical Techniques: Elemental Analysis and Speciation|
|Presenter Name:||Dr Jan Scholz|
|Co-authors:||Dr Margrit Killenberg|
Abstract Information :
Detection limits and method robustness achieved for the analysis of highly volatile organics by ICP-OES often hamper its applicability for impurity analysis on petrochemical plants. Hence, sample desolvation followed by ICP-MS analysis is often used, when conventional OES instruments lack sensitivity due to sample dilution and spectral interferences.
Here, we wish to report on a new approach for the direct analysis of low-boiling point gasoline by High Resolution ARRAY ICP-OES. Signal stabilities of RSD ≤ 3% yielded upon a three-hour continuous aspiration test will be presented, and impact of Oxygen addition on the precision of the Sodium and Potassium quantification will be discussed. Benefits of the high spectral resolution on matrix-specific detection limits in the low µg/kg range for Arsenic, Silicon and Phosphorous will be highlighted.