Towards a calibration-less ICP-AES method for the determination of trace elements in aqueous solutions: Double ratio plasma diagnostics combined with an internal standard

Year: 2009

Authors: Tognoni E., Hidalgo M., Canals A., Cristoforetti G., Legnaioli S., Palleschi V.

Autors Affiliation: Istituto per i Processi Chimico-Fisici, Area della Ricerca del Consiglio Nazionale delle Ricerche, Via Moruzzi 1, 56124 Pisa, Italy;
Departamento de Quımica Analıtica, Nutricion y Bromatologıa, Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain

Abstract: We propose a calibration-less approach to determine the concentration of the analytes in a solution in Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). This approach is a variant of the calibration-free algorithm developed for Laser-Induced Breakdown Spectroscopy analysis. The method assumes that the plasma is in local thermodynamic equilibrium (LTE) and requires that plasma temperature and electron number density are spectroscopically measured. Since the excitation and ionization conditions of the plasma are taken into account, matrix effects don


Volume: 24 (5)      Pages from: 655  to: 662

More Information: This work was partially funded by the Vicerrectorado de Relaciones Internacionales y Cooperacion de la Universidad de Alicante, through the \”Programa Propio para el Fomento de las Relaciones Internacionales de la UA\”. A. Canals and M. Hidalgo are grateful to the Spanish Ministry of Education and Science (PET2006-706-00, CTQ2005-09079-C03-01, RyC2003-2176, GV/2007/180), to Generalitat Valenciana (ACOMP07/053, RyC2003-2176) and to the University of Alicante (RyC2003-2176) for the financial support. The assistance provided by Mr. Clemente Santana Prieto in carrying out the ICP measurements is gratefully acknowledged. The authors want to express their gratefulness to Prof. Nicolo Omenetto for encouraging them to undertake this work.
KeyWords: inductively coupled plasma (ICP); induced breakdown; atomic emission spectroscopy; laser induced plasma; temeperature
DOI: 10.1039/b822740c

Citations: 10
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