Chapter 12 – Laser-Induced Breakdown Spectroscopy: Advanced Analytical Technique
01 Jan 2018-pp 265-282
TL;DR: Laser induced breakdown spectroscopy (LIBS) as discussed by the authors is a technique where atoms and ions are primarily formed in their excited states as a result of interaction between a tightly focused laser beam and the material sample.
Abstract: Laser induced breakdown spectroscopy (LIBS) is basically an emission spectroscopy technique where atoms and ions are primarily formed in their excited states as a result of interaction between a tightly focused laser beam and the material sample. The interaction between matter and high-density photons generates a plasma plume, which evolves with time and may eventually acquire thermodynamic equilibrium. One of the important features of this technique is that it does not require any sample preparation, unlike conventional spectroscopic analytical techniques. Samples in the form of solids, liquids, gels, gases, plasmas and biological materials (like teeth, leaf or blood) can be studied with almost equal ease.LIBS has rapidly developed into a major analytical technology with the capability of detecting all chemical elements in a sample, of real- time response, and of close-contact or stand-off analysis of targets. The present book has been written by active specialists in this field, it includes the basic principles, the latest developments in instrumentation and the applications of LIBS. It will be useful to analytical chemists and spectroscopists as an important source of information and also to graduate students and researchers engaged in the fields of combustion, environmental science, and planetary and space exploration. It features: recent research work, possible future applications and LIBS Principles.
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TL;DR: Compared to the conventional flame emission spectroscopy, LIBS atomizes only the small portion of the sample by the focused laser pulse, which makes a tiny spark on the sample, and capturing the instant light is a major skill to collect sufficient intensity of the emitting species.
Abstract: ■ CONTENTS General Information: Books, Reviews, and Conferences 640 Fundamentals 641 Interaction of Laser Beam with Matter 641 Factors Affecting Laser Ablation and LaserInduced Plasma Formation 642 Influence of Target on the Laser-Induced Plasmas 642 Influence of Laser Parameters on the LaserInduced Plasmas 643 Laser Wavelength (λ) 643 Laser Pulse Duration (τ) 643 Laser Pulse Energy (E) 645 Influence of Ambient Gas on the Laser-Induced Plasmas 645 LIBS Methods 647 Double Pulse LIBS 647 Femtosecond LIBS 651 Resonant LIBS 652 Ranging Approaches 652 Applications 654 Surface Inspection, Depth Profiling, and LIBS Imaging 654 Cultural Heritage 654 Industrial Analysis 655 Environmental Monitoring 656 Biomedical and Pharmaceutical Analysis 658 Security and Forensics 659 Analysis of Liquids and Submerged Solids 660 Space Exploration and Isotopic Analysis 662 Space Exploration 662 Isotopic Analysis 662 Conclusions and Future Outlook 663 Author Information 664 Corresponding Author 664 Notes 664 Biographies 664 Acknowledgments 664 References 664
847 citations
TL;DR: In this article, a review of recent results of the studies of double laser pulse plasma and ablation for laser induced breakdown spectroscopy applications is presented, where the authors demonstrate that the maximum effect is obtained at some optimum separation delay time between pulses, which depends on several factors, such as the target material, the energy level of excited states responsible for the emission, and the type of enhancement process considered.
448 citations
TL;DR: In this article, the authors present a broad coverage of nanoparticles and polymeric/biopolymeric host materials and the resulting properties of the hybrid composites, and discuss the role of the Donnan membrane effect exerted by the host functionalized polymer in harnessing the desirable properties of metal and metal oxide nanoparticles for intended applications.
Abstract: Metal and metal oxide nanoparticles exhibit unique properties in regard to sorption behaviors, magnetic activity, chemical reduction, ligand sequestration among others. To this end, attempts are being continuously made to take advantage of them in multitude of applications including separation, catalysis, environmental remediation, sensing, biomedical applications and others. However, metal and metal oxide nanoparticles lack chemical stability and mechanical strength. They exhibit extremely high pressure drop or head loss in fixed-bed column operation and are not suitable for any flow-through systems. Also, nanoparticles tend to aggregate; this phenomenon reduces their high surface area to volume ratio and subsequently reduces effectiveness. By appropriately dispersing metal and metal oxide nanoparticles into synthetic and naturally occurring polymers, many of the shortcomings can be overcome without compromising the parent properties of the nanoparticles. Furthermore, the appropriate choice of the polymer host with specific functional groups may even lead to the enhancement of the properties of nanoparticles. The synthesis of hybrid materials involves two broad pathways: dispersing the nanoparticles (i) within pre-formed or commercially available polymers; and (ii) during the polymerization process. This review presents a broad coverage of nanoparticles and polymeric/biopolymeric host materials and the resulting properties of the hybrid composites. In addition, the review discusses the role of the Donnan membrane effect exerted by the host functionalized polymer in harnessing the desirable properties of metal and metal oxide nanoparticles for intended applications.
386 citations
TL;DR: In this paper, the authors present a critical review of the applications of the Calibration-Free Laser-Induced Breakdown Spectroscopy (CF-LIBS) method.
339 citations
TL;DR: In this paper, Principal Component Analysis and Soft Independent Modeling of Class Analogy are employed to generate a model and predict the rock type of the samples, which appear to exploit the matrix effects associated with the chemistries of these 18 samples.
282 citations
References
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Book•
01 Jan 1974TL;DR: SpectSpectral Line Broadening by Plasmas as discussed by the authors provides a theoretical overview of the spectral line broadening mechanism and its application in the field of plasma spectroscopy, with a focus on spectral lines.
Abstract: The usefulness of line-profile measurements as a diagnostic tool in plasma physics depends on our ability to analyze and interpret the data. In his earlier book, "Plasma Spectroscopy", * Hans Griem developed the theory of the various broadening mechanisms. His new book, "Spectral Line Broadening by Plasmas", closes the gap between theory and practical application for people who are not already expert in the theory of spectral lines.
2,509 citations
Book•
01 Jan 2006
TL;DR: In this article, the authors present an overview of the current state of the art in the field of laser-induced breakdown spectroscopy (LIBS) and its application in various applications.
Abstract: Foreword. Preface. Acronyms, Constants, And Symbol.s 1. History. 1.1 Atomic optical emission spectrochemistry (OES). 1.2 Laser-induced breakdown spectroscopy (LIBS). 1.3 LIBS History 1960-1980. 1.4 LIBS History 1980-1990. 1.5 LIBS History 1990-2000. 1.6 Active Areas of Investigation, 2000-2002. References. 2. Basics of the LIBS plasma. 2.1 LIBS plasma fundamentals. 2.2 laser-Induced Breakdown. 2.3 laser ablation. 2.4 double or multiple pulse libs. 2.5 summary. References. 3. Apparatus fundamentals. 3.1 Basic LIBS apparatus. 3.2 Lasers. 3.3 Optical systems. 3.4 Methods of spectral resolution. 3.5 Detectors. 3.6 Detection system calibration. 3.7 Timing considerations. 3.8 Methods of LIBS deployment. References. 4. Determining LIBS analytical figures-of-merit. 4.1 Introduction. 4.2 Basics of LIBS measurements. 4.3 precision. 4.4 Calibration. 4.5 Detection limit. References. 5. Qualitative LIBS Analysis. 5.1 Identifying elements. 5.2 Material identification. 5.3 Process control. References. 6. Quantitative LIBS Analysis. 6.1 Introduction. 6.2 Geometric Sampling Parameters. 6.3 Other sampling considerations. 6.4. Particle size. 6.5 use of internal standardization. 6.6 Chemical Matrix effects. 6.7. Example of libs measurement: Impurities in Lithium Solutions. 6.8 Reported figures of merit for LIBS measurements. 6.9 Conclusions. References. Chapter 7. REMOTE LIBS MEASUREMENTS. 7.1 Introduction. 7.2 Conventional open path LIBS. 7.3 Stand-off LIBS using Femtosecond pulses. 7.4 Fiber optic LIBS. References 8. Examples of recent LIBS fundamental research, instruments and novel applications. 8.1 Introduction. 8.2 fundamentals. 8.3 calibration-free LIBS. 8.4 laser and spectrometer advances. 8.5 surface analysis. 8.6 Double pulse studies and applications. 8.7 Steel applications. 8.8 libs for biological applications. 8.9 nuclear reactor applications. 8.10 LIBS for space applications. References. 9. THE FUTURE OF LIBS. 9.1 Introduction. 9.2 Expanding the understanding and capability of the libs process. 9.3 Widening the universe of libs applications. 9.4 Factors that will speed the commercialization of Libs. 9.5 conclusion. References. APPENDIX A: Safety Considerations in LIBS. A.1. safety plans. A.2 Laser Safety. A.3 Generation of Aerosols. A.4 laser pulse induced ignition. APPENDIX B: LIBS Application Matrix. APPENDIX C: LIBS Detection Limits. C.1 detection limits from the literature. C.2 uniform detection limits. APPENDIX D: Major LIBS References. Index.
1,473 citations
Book•
13 Nov 1997TL;DR: The diagnosis of plasmas using spectroscopic observations has its origins in various older disciplines, including astronomy and discharge physics as mentioned in this paper, and the need for non-interfering diagnostics arose and spectroscopy was applied to determine the physical state and chemical abundance of the studied.
Abstract: The diagnosis of plasmas using spectroscopic observations has its origins in various older disciplines, including astronomy and discharge physics. As laboratory plasma physics evolved from low-density, low-temperature discharges to higher energy density plasmas, the need for non-interfering diagnostics arose and spectroscopy was applied to determine the physical state and chemical abundance of the plasmas studied.
1,120 citations
TL;DR: Compared to the conventional flame emission spectroscopy, LIBS atomizes only the small portion of the sample by the focused laser pulse, which makes a tiny spark on the sample, and capturing the instant light is a major skill to collect sufficient intensity of the emitting species.
Abstract: ■ CONTENTS General Information: Books, Reviews, and Conferences 640 Fundamentals 641 Interaction of Laser Beam with Matter 641 Factors Affecting Laser Ablation and LaserInduced Plasma Formation 642 Influence of Target on the Laser-Induced Plasmas 642 Influence of Laser Parameters on the LaserInduced Plasmas 643 Laser Wavelength (λ) 643 Laser Pulse Duration (τ) 643 Laser Pulse Energy (E) 645 Influence of Ambient Gas on the Laser-Induced Plasmas 645 LIBS Methods 647 Double Pulse LIBS 647 Femtosecond LIBS 651 Resonant LIBS 652 Ranging Approaches 652 Applications 654 Surface Inspection, Depth Profiling, and LIBS Imaging 654 Cultural Heritage 654 Industrial Analysis 655 Environmental Monitoring 656 Biomedical and Pharmaceutical Analysis 658 Security and Forensics 659 Analysis of Liquids and Submerged Solids 660 Space Exploration and Isotopic Analysis 662 Space Exploration 662 Isotopic Analysis 662 Conclusions and Future Outlook 663 Author Information 664 Corresponding Author 664 Notes 664 Biographies 664 Acknowledgments 664 References 664
847 citations
TL;DR: In this article, the authors reviewed the theoretical analysis underlying the concept of thermodynamic equilibrium and the derivation of the McWhirter criterion, and critically discussed its application to a transient and nonhomogeneous plasma, like that created by a laser pulse on solid targets.
514 citations