The investigation of laser-induced breakdown spectroscopy for detection of biological contaminants on surfaces

Daniel Ward Merdes, J. M. Suhan, J. M. Keay, D. M. Hadka, W. R. Bradley

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The potential utility of laser-induced breakdown spectroscopy (LIBS) as a means to detect biological contaminants on painted surfaces is investigated. Issues involving the use of LIBS for detection of biologicals are discussed. The apparatus assembled for this work is described, as is the manner in which samples of bare copper and painted substrates onto which thin layers of bacterial spores, pollen, molds, and contaminants were prepared. A chemometric analysis methodology consisting of spectral preprocessing, principal components analysis, linear discriminant analysis, and hierarchical cluster analysis yields an automated classification tool that was able to identify bacterial spores with a false positive rate of 1% and a false negative rate of 3%.

Original languageEnglish (US)
Pages (from-to)28-38
Number of pages11
JournalSpectroscopy
Volume22
Issue number4
StatePublished - Apr 2007

Fingerprint

Laser induced breakdown spectroscopy
spores
laser-induced breakdown spectroscopy
contaminants
Impurities
pollen
cluster analysis
Cluster analysis
Molds
Discriminant analysis
preprocessing
principal components analysis
Principal component analysis
Copper
methodology
copper
Substrates

All Science Journal Classification (ASJC) codes

  • Spectroscopy

Cite this

Merdes, Daniel Ward ; Suhan, J. M. ; Keay, J. M. ; Hadka, D. M. ; Bradley, W. R. / The investigation of laser-induced breakdown spectroscopy for detection of biological contaminants on surfaces. In: Spectroscopy. 2007 ; Vol. 22, No. 4. pp. 28-38.
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The investigation of laser-induced breakdown spectroscopy for detection of biological contaminants on surfaces. / Merdes, Daniel Ward; Suhan, J. M.; Keay, J. M.; Hadka, D. M.; Bradley, W. R.

In: Spectroscopy, Vol. 22, No. 4, 04.2007, p. 28-38.

Research output: Contribution to journalArticle

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