Quantification of Trace Elements in Naphtha by ICP-OES

像石脑油这样的挥发性有机物是ICP技术分析最具挑战性的样品之一。来自有机基质的丰富的排放线和高挥发性证明了ICP-OES分析仪的挑战。为了常规定量低µg/kg范围内的微量元素，需要一个稳定的等离子体以及一个具有高光谱分辨率的光学系统。

For specification analysis in the low µg/kg range ICP-MS often is the method of choice as conventional ICP-OES instruments lack sensitivity due to sample dilution and spectral interferences. On the PlasmaQuant PQ 9000 Elite, the combination of the vertical plasma geometry of its V Shuttle Torch and the unique plasma performance of its High-Frequency generator allow for the uninterrupted and direct routine analysis of undiluted naphtha with excellent method robustness.

Apart from instrumental conditions, sample preparation, calibration strategy and sample introduction play a major role in the analysis of volatile organic matrices. The here presented work describes different calibration strategies as well as the use of different sample introduction systems in order to achieve lowest limits of detection in naphtha in a routine measurement.