Evaluation of Femtosecond Laser-Induced Breakdown Spectroscopy for Analysis of Animal Tissues

Author(s)

Santos, Jr., Dario ^{[1, 2]} ; Samad, Ricardo Elgul ^[2] ; Trevizan, Lilian Cristina ^[1] ; de Freitas, Anderson Zanardi ^[2] ; Vieira, Jr., Nilson Dias ^[2] ; Krug, Francisco Jost ^[1]

Affiliation

^[1] Univ Sao Paulo, Ctr Energia Nucl Agr, Lab Quim Analit Henrique Bergamin Filho, BR-13416000 Piracicaba, SP - Brazil

^[2] IPEN CNEN, Ctr Lasers & Aplicacoes, BR-05508000 Sao Paulo - Brazil

• Document type: Journal article
• Source: Applied Spectroscopy; v. 62, n. 10, p. 1137-1143, OCT 2008.
• Web of Science Citations: 35

Abstract

The aim of this work was to evaluate the performance of femtosecond laser-induced breakdown spectroscopy (fs-LIBS) for the determination of elements in animal tissues. Sample pellets were prepared from certified reference materials, such as liver, kidney, muscle, hepatopancreas, and oyster, after cryogenic grinding assisted homogenization. Individual samples were placed in a two-axis computer-controlled translation stage that moved in the plane orthogonal to a beam originating from a Ti:Sapphire chirped-pulse amplification (CPA) laser system operating at 800 mu and producing a train of 840 mu J and 40 fs pulses at 90 Hz. The plasma emission was coupled into the optical fiber of a high-resolution intensified charge-coupled device (ICCD)-echelle spectrometer. Time-resolved characteristics of the laser-produced plasmas showed that the best results were obtained with delay times between 80 and 120 ns. Data obtained indicate both that it is a matrix-independent sampling process and that fs-LIBS can be used for the determination of Ca, Cu, Fe, K, Mg, Na, and P, but efforts must be made to obtain more appropriate detection limits for Al, Sr, and Zn. (AU)

• FAPESP's process: 00/15135-9 - Implementation of a terawatt laser system and its applications
• Grantee: Nilson Dias Vieira Junior
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 98/14270-8 - Center for Optical and Photonics Science
• Grantee: Vanderlei Salvador Bagnato
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 04/15965-2 - Implementation and development of Laser Induced Breakdown Spectroscopy (LIBS)
• Grantee: Francisco José Krug
• Support Opportunities: Research Projects - Thematic Grants