CF-LIPS: A new approach to LIPS spectra analysis

The usual technique of the laser induced plasma spectroscopy (LIPS) spectra analysis relies on the use of calibration curves for quantitative measurem ents of plasma composition. However, LIPS calibration curves strongly depen d on the material composition (the so-called matrix effect); thus, this sta ndard approach to the LIPS spectra analysis is inadequate when precise info rmation on unknown samples composition is required. In this paper we presen t a new procedure, based on LIPS, for calibration-free quantitative element al analysis of materials. The new procedure, based on an algorithm develope d and patented by IFAM-CNR, allows the overcoming of the matrix effect, yie lding precise and accurate quantitative results without the need of calibra tion curves.