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Bioaerosol detection and characterization by surface-enhanced Raman spectroscopy.
J Colloid Interface Sci. 2007 May 01; 309(1):36-43.JC

Abstract

Instrumentation has been developed to detect and characterize airborne pollen and bacteria rapidly by injecting a bioaerosol into a nanocolloidal suspension of silver particles using a micropump. The biological particles were mixed with the silver colloid in order to deposit the metallic particles on the surface of the bioanalyte. The silver/bioanalyte suspension was pumped through a light scattering cuvette, and the enhanced Raman spectrum was recorded. Surface-enhanced Raman spectra are presented for tree pollen (cottonwood and redwood pollen) and a bacterium (Escherichia coli), and the E. coli spectra are compared with results obtained from the literature and with results obtained previously by mixing various concentrations of the bioanalyte with the silver colloid. Although the system has not been optimized to maximize the Raman spectra, it is shown spectra can be obtained rapidly. Some assignments of the chemical bonds associated with the spectra are based on previously published results for bacteria and pollen.

Authors+Show Affiliations

Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195-1700, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17362975

Citation

Sengupta, Atanu, et al. "Bioaerosol Detection and Characterization By Surface-enhanced Raman Spectroscopy." Journal of Colloid and Interface Science, vol. 309, no. 1, 2007, pp. 36-43.
Sengupta A, Brar N, Davis EJ. Bioaerosol detection and characterization by surface-enhanced Raman spectroscopy. J Colloid Interface Sci. 2007;309(1):36-43.
Sengupta, A., Brar, N., & Davis, E. J. (2007). Bioaerosol detection and characterization by surface-enhanced Raman spectroscopy. Journal of Colloid and Interface Science, 309(1), 36-43.
Sengupta A, Brar N, Davis EJ. Bioaerosol Detection and Characterization By Surface-enhanced Raman Spectroscopy. J Colloid Interface Sci. 2007 May 1;309(1):36-43. PubMed PMID: 17362975.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioaerosol detection and characterization by surface-enhanced Raman spectroscopy. AU - Sengupta,Atanu, AU - Brar,Navpreet, AU - Davis,E James, Y1 - 2007/02/12/ PY - 2006/09/27/received PY - 2006/12/28/revised PY - 2007/02/01/accepted PY - 2007/3/17/pubmed PY - 2007/5/31/medline PY - 2007/3/17/entrez SP - 36 EP - 43 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 309 IS - 1 N2 - Instrumentation has been developed to detect and characterize airborne pollen and bacteria rapidly by injecting a bioaerosol into a nanocolloidal suspension of silver particles using a micropump. The biological particles were mixed with the silver colloid in order to deposit the metallic particles on the surface of the bioanalyte. The silver/bioanalyte suspension was pumped through a light scattering cuvette, and the enhanced Raman spectrum was recorded. Surface-enhanced Raman spectra are presented for tree pollen (cottonwood and redwood pollen) and a bacterium (Escherichia coli), and the E. coli spectra are compared with results obtained from the literature and with results obtained previously by mixing various concentrations of the bioanalyte with the silver colloid. Although the system has not been optimized to maximize the Raman spectra, it is shown spectra can be obtained rapidly. Some assignments of the chemical bonds associated with the spectra are based on previously published results for bacteria and pollen. SN - 0021-9797 UR - https://www.unboundmedicine.com/medline/citation/17362975/Bioaerosol_detection_and_characterization_by_surface_enhanced_Raman_spectroscopy_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9797(07)00162-2 DB - PRIME DP - Unbound Medicine ER -