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Laser-induced plasma; spectroscopy; teeth; plastic; principal component analysis.

Laser-induced breakdown spectroscopy (LIBS) is an emerging analytical technique with numerous advantages such as rapidity, multi-elemental analysis, minimal sample preparation, minimal destruction, low cost and versatility of being applied to a wide range of materials. In this paper, we report the preliminary observations we obtained using LIBS for clinical and environmental samples. Elemental analysis has been done qualitatively in human teeth samples which show encouraging results. It has also been demonstrated in this paper that LIBS can be very well utilized in field applications such as plastic waste sorting and recycling.

V K Unnikrishnan¹ K S Choudhari¹ Suresh D Kulkarni¹ Rajesh Nayak¹ V B Kartha¹ C Santhosh¹ B M Suri²

1. Centre for Atomic and Molecular Physics, Manipal University, Manipal 576 104, India
2. Laser & Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 400 085, India

Published

February 2014

Early published

8 February 2014