Insight into the Formation of Molecular Species in Laser-Induced Plasma of Isotopically Labeled Organic Samples

Recently, the detection of molecular species in laser-induced breakdown spectroscopy (LIBS) has gained increasing interest, particularly for isotopic analysis. In LIBS of organic materials, it is predominantly CN and C2 species that are formed, and multiple mechanisms may contribute to their formati...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2015-10, Vol.87 (19), p.10131-10137
Main Authors: Glaus, Reto, Riedel, Jens, Gornushkin, Igor
Format: Article
Language:English
Subjects:
Ablation
Anisotropy
Argon
Atmospherics
Bonding
Carbon
Formations
Laser plasmas
Molecular structure
Molecules
Nitrogen
Organic materials
Plasma
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Summary:Recently, the detection of molecular species in laser-induced breakdown spectroscopy (LIBS) has gained increasing interest, particularly for isotopic analysis. In LIBS of organic materials, it is predominantly CN and C2 species that are formed, and multiple mechanisms may contribute to their formation. To gain deeper insight into the formation of these species, laser-induced plasma of 13C and 15N labeled organic materials was investigated in a temporally and spatially resolved manner. LIBS on fumaric acid with a 13C labeled double bond allowed the formation mechanism of C2 to be investigated by analyzing relative signal intensities of 12C2, 12C13C, and 13C2 molecules. In the early plasma (
ISSN:0003-2700
1520-6882
DOI:10.1021/acs.analchem.5b02926