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Elemental analysis of steel scrap metals and minerals by laser-induced breakdown spectroscopy
KTH, School of Engineering Sciences (SCI), Physics.
KTH, School of Engineering Sciences (SCI), Physics.ORCID iD: 0000-0003-2100-8864
KTH, School of Engineering Sciences (SCI), Applied Physics, Chemical Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics, Chemical Physics.
2005 (English)In: Spectrochimica Acta Part B - Atomic Spectroscopy, ISSN 0584-8547, E-ISSN 0031-6987, Vol. 60, no 7-8, 920-925 p.Article in journal (Refereed) Published
Abstract [en]

The atomic emission of laser-induced plasma on steel samples has been studied for quantitative elemental analysis. The plasma has been created with 8 ns wide pulses using the second-harmonic from a Q-switched Nd:YAG laser, in air at atmospheric pressure. The plasma emission is detected with temporal resolution, using an Echelle spectrometer of wide spectral range (300-900 nm) combined with an intensified charge coupled device camera. A plasma temperature of 7800 400 K is determined using the Boltzmann plot method, from spectra obtained under optimized experimental conditions. As an example of an industrial application the concentration of copper in scrap metals is studied, which is an important factor to determine the quality of the samples to recycle. Cu concentrations down to 200 ppm can be detected. Another application of the laser-induced plasma spectroscopy method is the measurement of the nickel and copper concentrations in an iron-containing sample of reduced magma from the 1870s expedition to western Greenland by Adolf Erik Nordenskiold. Different spectral lines of nickel are used for calibration, and their results are compared.

Place, publisher, year, edition, pages
2005. Vol. 60, no 7-8, 920-925 p.
Keyword [en]
laser-induced breakdown spectroscopy, steel, nickel, copper, chromium, air, liquid steel, spectrometry, emission
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-15126DOI: 10.1016/j.sab.2005.05.024ISI: 000232640700007Scopus ID: 2-s2.0-25644444524OAI: oai:DiVA.org:kth-15126DiVA: diva2:333167
Note
QC 20100525 QC 20111012Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-10-12Bibliographically approved

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Hedberg, Jonas

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