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ISRN Analytical Chemistry
Volume 2013 (2013), Article ID 719483, 9 pages
http://dx.doi.org/10.1155/2013/719483
Research Article

An Approach of Laser-Induced Breakdown Spectroscopy to Detect Toxic Metals in Crushed Ice Ball

1Centre of Food Technology, University of Allahabad, Allahabad 211002, India
2Department of Physics, Ewing Christian College, University of Allahabad, Allahabad 211003, India
3Department of Physics, University of Allahabad, Allahabad 211002, India

Received 23 July 2013; Accepted 1 September 2013

Academic Editors: S. Girousi, W. Miao, and T. Michalowski

Copyright © 2013 Rahul Agrawal et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper deals the application of laser-induced breakdown spectroscopy (LIBS) to toxic metals used as pigment in crushed ice-ball samples. The present work highlights the advantages of LIBS as in situ, real-time analytical tool for rapid detection of toxic or heavy metals like lead (Pb) and chromium (Cr) and non toxic elements like carbon (C), nitrogen (N), magnesium (Mg), calcium (Ca), sodium (Na), and potassium (K) in crushed ice-ball of different colors (red, green, yellow, pale yellow, and orange) collected from five different areas, with minimal sample preparation. For rapid surveillance of toxic metals we have used multivariate analysis, that is, principal component analysis (PCA) with the LIBS spectral data of ice-ball samples. This study suggests that LIBS coupled with PCA may be an instant diagnostic tool for identification and classification of adulterated and nonadulterated samples.