LIBS analysis of geomaterials: Geochemical fingerprinting for the rapid analysis and discrimination of minerals

Harmon, Russell S.; Remus, Jeremiah J.; McMillan, Nancy J.; McManus, Catherine E.; Collins, Leslie M.; Gottfried, Jennifer L.; DeLucia, Frank C.; Miziolek, Andrzej W.

doi:10.1016/j.apgeochem.2009.02.009

Cited by 165 publications

(74 citation statements)

References 21 publications

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“…This study is a contribution to a long-term effort to examine the potential of using LIBS for geological material discrimination. It builds directly on the work undertaken in the Army Research Laboratory spectroscopy laboratory since 2004 [1][2][3][4][5][6][7] that has been directed toward exploiting the unique potential that LIBS has for real-time geochemical "fingerprinting." For example, the ability to identify the geographic source area of gem minerals is one way of determining if a stone may have originated from a politically unstable area.…”

Section: Introductionmentioning

confidence: 99%

Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: the example of garnet

et al. 2010

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Laser-induced breakdown spectroscopy (LIBS) is an analytical technique real-time geochemical analysis that is being developed for portable use outside of the laboratory. In this study, statistical signal processing and classification techniques were applied to single-shot, broadband LIBS spectra, comprising measured plasma light intensities between 200 and 960 nm, for a suite of 157 garnets of different composition from 92 locations worldwide. Partial least squares discriminant analysis was applied to sets of 25 LIBS spectra for each garnet sample and used to classify the garnet samples based on composition and geographic origin. Careful consideration was given to the cross-validation procedure to ensure that the classification algorithm is robust to unseen data. The results indicate that broadband LIBS analysis can be used to discriminate garnets of different composition and has the potential to discern geographic origin. © 2010

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Section: Introductionmentioning

confidence: 99%

Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: the example of garnet

et al. 2010

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“…ARL has used LIBS for the detection of Halon alternative agents (19,20), tested a field-portable LIBS system for the detection of lead in soil and paint (10), studied the spectral emission of aluminum and aluminum oxide from bulk aluminum in different bath gases (21), performed kinetic modeling of LIBS plumes (22)(23)(24)(25), and demonstrated the detection and discrimination of geological materials (18,(26)(27)(28)(29)(30)(31), plastic landmines (32,33), explosives (34)(35)(36)(37)(38)(39)(40)(41)(42), and chemical and biological warfare agent surrogates (43)(44)(45)(46)(47). ARL has also published a number of reviews on LIBS (8,(48)(49)(50)(51)(52).…”

Section: Background/expertisementioning

confidence: 99%

“…source (geographic region, local area, or specific mine) of beryl (27,28,30,31) and garnet (78) gemstones. Other promising potential applications for LIBS yet to be explored include the determination of the geographic origin of food, clothing, and other manufactured goods, as well as illicit substances such as drugs, counterfeit goods, and laundered money.…”

Section: Origin Determinationmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy: Capabilities and Applications

Gottfried¹,

Lucia²

2010

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“…LIBS has many advantages including multi-element detection, little or no sample preparation, analysis of solids, liquids, and gases, real time analyses, and a requirement of only optical access to the surface. [1,2] There are also many applications of LIBS, some of which include metal sorting, heavy metal determination, fissile material detection, geochemical fingerprinting, space exploration, and explosive detection [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Lifetime Analysis of Titanium Neutral and Singly-Ionized Species in LIBS’s Plasmas: A Physical Chemistry Experiment

Roche¹,

Shoup²

2017

WJCE

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In this physical chemistry laboratory, the students develop experience in using Laser-Induced Breakdown Spectroscopy (LIBS) to analyze spectral emission data from to determine lifetimes of neutral and singly-ionized titanium species in LIBS plasmas. LIBS is a spectroscopic technique that focuses a high power laser on a surface. The laser heats, ablates, atomizes, and ionizes the surface material which creates a plasma. The light from the plasma is then spectrally resolved and detected. For LIBS experiments, the data can be collected using gated (using time delays and gate widths) or non-gated detection; this experiment uses gated detection taken at various time delays. The time delays used ranged from 0 to 60 µs to create the time decay curves. After creating the time decay curves for the titanium species used in this experiment, the students were able to examine the curves which illustrated the behavior of the neutral and singly-ionized titanium species and also gained experience calculating lifetimes.

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LIBS analysis of geomaterials: Geochemical fingerprinting for the rapid analysis and discrimination of minerals

Cited by 165 publications

References 21 publications

Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: the example of garnet

Laser-induced breakdown spectroscopy-based geochemical fingerprinting for the rapid analysis and discrimination of minerals: the example of garnet

Laser-Induced Breakdown Spectroscopy: Capabilities and Applications

Lifetime Analysis of Titanium Neutral and Singly-Ionized Species in LIBS’s Plasmas: A Physical Chemistry Experiment

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