title: Detection of indoor biological hazards using the man-portable laser induced breakdown spectrometer.
abstract: The performance of a man-portable laser induced breakdown spectrometer was evaluated for the detection of biological powders on indoor office surfaces and wipe materials. Identification of pure unknown powders was performed by comparing against a library of spectra containing biological agent surrogates and confusant materials, such as dusts, diesel soot, natural and artificial sweeteners, and drink powders, using linear correlation analysis. Simple models constructed using a second technique, partial least squares discriminant analysis, successfully identified Bacillus subtilis (BG) spores on wipe materials and office surfaces. Furthermore, these models were able to identify BG on materials not used in the training of the model.
authors.affiliation: U.S. Army Research Laboratory, AMSRD-ARL-WM-BD, Aberdeen Proving Ground, Maryland 21005-5069, USA. cmunson@arl.army.mil
authors.forename: Chase A
authors.initials: CA
authors.lastname: Munson
authors.forename: Jennifer L
authors.initials: JL
authors.lastname: Gottfried
authors.forename: Emily Gibb
authors.initials: EG
authors.lastname: Snyder
authors.forename: Frank C
authors.initials: FC
authors.lastname: De Lucia
authors.forename: Brian
authors.initials: B
authors.lastname: Gullett
authors.forename: Andrzej W
authors.initials: AW
authors.lastname: Miziolek
mesh_terms: D000391:Air Microbiology; D016902:Air Pollution, Indoor / Q000032:analysis; D000818:Animals; D001412:Bacillus subtilis / Q000378:metabolism; D001694:Biological Warfare / Q000379:methods; D004391:Dust; D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods; D007834:Lasers; D015233:Models, Statistical; D055095:Optics and Photonics; D010316:Particle Size; D011208:Powders
chemical_list: D004391:Dust; D011208:Powders