Study of archaeological coins of different dynasties using libs coupled with multivariate analysis

Abstract Laser Induced Breakdown Spectroscopy (LIBS) is an atomic emission spectroscopic technique having unique capability of an in-situ monitoring tool for detection and quantification of elements present in different artifacts. Archaeological coins collected form G.R. Sharma Memorial Museum; University of Allahabad, India has been analyzed using LIBS technique. These coins were obtained from excavation of Kausambi, Uttar Pradesh, India. LIBS system assembled in the laboratory (laser Nd:YAG 532 nm, 4 ns pulse width FWHM with Ocean Optics LIBS 2000+ spectrometer) is employed for spectral acquisition. The spectral lines of Ag, Cu, Ca, Sn, Si, Fe and Mg are identified in the LIBS spectra of different coins. LIBS along with Multivariate Analysis play an effective role for classification and contribution of spectral lines in different coins. The discrimination between five coins with Archaeological interest has been carried out using Principal Component Analysis (PCA). The results show the potential relevancy of the methodology used in the elemental identification and classification of artifacts with high accuracy and robustness.

[1]  D. E. Watt,et al.  Analysis of minor and trace elements in gallstones by induction of characteristic ionising radiation. , 1984, Physics in medicine and biology.

[2]  J. D. Robertson,et al.  Copper, iron and zinc in Alzheimer's disease senile plaques , 1998, Journal of the Neurological Sciences.

[3]  Hairong Qi,et al.  A Novel and Effective Multivariate Method for Compositional Analysis using Laser Induced Breakdown Spectroscopy , 2014 .

[4]  E. Tognoni,et al.  New Procedure for Quantitative Elemental Analysis by Laser-Induced Plasma Spectroscopy , 1999 .

[5]  Roberta Fantoni,et al.  Laser Induced Breakdown Spectroscopy in archeometry: A review of its application and future perspectives , 2014 .

[6]  C. G. Ryan,et al.  Quantitative trace element imaging using PIXE and the nuclear microprobe , 2000, Int. J. Imaging Syst. Technol..

[7]  Ulrich Panne,et al.  Multivariate classification of pigments and inks using combined Raman spectroscopy and LIBS , 2012, Analytical and Bioanalytical Chemistry.

[8]  Russell S. Harmon,et al.  Multivariate analysis of laser-induced breakdown spectroscopy chemical signatures for geomaterial classification , 2009 .

[9]  Zamin-K. Yang,et al.  Application of Emerging Tools and Techniques for Measuring Carbon and Microbial Communities in Reclaimed Mine Soils , 2004 .

[10]  L. Beck,et al.  Silver surface enrichment of silver–copper alloys: a limitation for the analysis of ancient silver coins by surface techniques , 2004 .

[11]  J. Capelo,et al.  Discussion of parameters associated with the ultrasonic solid-liquid extraction for elemental analysis (total content) by electrothermal atomic absorption spectrometry. An overview. , 2005, Ultrasonics sonochemistry.

[12]  N. Rajurkar,et al.  Elemental analysis of some herbal plants used in the treatment of cardiovascular diseases by NAA and AAS , 1997 .

[13]  Awadhesh K. Rai,et al.  In-Situ Monitoring of Chromium Uptake in Different Parts of the Wheat Seedling (Triticum aestivum) using Laser-Induced Breakdown Spectroscopy , 2014 .

[14]  Vivi Tornari,et al.  Lasers in the Preservation of Cultural Heritage: Principles and Applications , 2006 .

[15]  S. O. Troja,et al.  Historical pigments characterisation by quantitative X-ray fluorescence , 2014 .

[16]  Hua Zhao,et al.  Multivariate Analysis of Laser-Induced Breakdown Spectroscopy for Discrimination between Explosives and Plastics , 2012 .

[17]  Cristian A. D'Angelo,et al.  Analysis of Minerals and Rocks by Laser-Induced Breakdown Spectroscopy , 2011 .

[18]  D. A. Rusak,et al.  Using Laser-Induced Breakdown Spectroscopy to Assess Preservation Quality of Archaeological Bones by Measurement of Calcium-to-Fluorine Ratios , 2011, Applied spectroscopy.

[19]  Leonardo Masotti,et al.  Archaeometric Analysis of Ancient Copper Artefacts by Laser-Induced Breakdown Spectroscopy Technique , 2005 .

[20]  R. Soloway,et al.  A spectroscopic study of pigment gallstones in China , 1997 .

[21]  Demetrios Anglos,et al.  Supplementary material : Combined in situ micro-XRF, LIBS and SEM-EDS analysis of base metal and corrosion products for Islamic copper alloyed artefacts from Umm Qais museum, Jordan , 2012 .

[22]  A. K. Rai,et al.  Analysis of deposited impurity material on the surface of the optical window of the Tokamak using LIBS , 2014 .

[23]  H. Griem.  Validity of Local Thermal Equilibrium in Plasma Spectroscopy , 1963 .

[24]  Demetrios Anglos,et al.  Laser-induced breakdown spectroscopy (LIBS) in archaeological science—applications and prospects , 2007, Analytical and bioanalytical chemistry.

[25]  E. Pavlidou,et al.  Compositional study of IIIrd century BC silver coins from Kreshpan hoard (Albania) using EDXRF spectrometry , 2007 .

[26]  Demetrios Anglos,et al.  Characterization of Iron age pottery from eastern Turkey by laser-induced breakdown spectroscopy (LIBS) , 2008 .

[27]  Vivek K. Singh,et al.  Assessment of LIBS for Spectrochemical Analysis: A Review , 2012 .

[28]  Jagdish P. Singh,et al.  Laser-induced breakdown spectroscopy , 2007 .

[29]  Demetrios Anglos,et al.  The application of LIBS for the analysis of archaeological ceramic and metal artifacts , 2002 .