dc.contributor.author | Kaye, Paul H. | |
dc.contributor.author | Stanley, W. | |
dc.contributor.author | Hirst, E. | |
dc.contributor.author | Foot, E. V. | |
dc.contributor.author | Baxter, K. | |
dc.contributor.author | Barrington, S.J. | |
dc.date.accessioned | 2008-04-07T19:50:16Z | |
dc.date.available | 2008-04-07T19:50:16Z | |
dc.date.issued | 2005 | |
dc.identifier.citation | Kaye , P H , Stanley , W , Hirst , E , Foot , E V , Baxter , K & Barrington , S J 2005 , ' A single-particle multichannel bio-aerosol fluorescence sensor ' , Optics Express , vol. 13 , no. 10 , pp. 3583-3593 . https://doi.org/10.1364/OPEX.13.003583 | |
dc.identifier.other | dspace: 2299/1871 | |
dc.identifier.other | ORCID: /0000-0002-4078-5864/work/62749289 | |
dc.identifier.other | ORCID: /0000-0001-6950-4870/work/32372026 | |
dc.identifier.uri | http://hdl.handle.net/2299/1871 | |
dc.description.abstract | We describe a prototype low-cost multi-channel aerosol fluorescence sensor designed for unattended deployment in medium to large area bio-aerosol detection networks. Individual airborne particles down to ~1µm in size are detected and sized by measurement of light scattered from a continuous-wave diode laser (660nm). This scatter signal is then used to trigger the sequential firing of two xenon sources which irradiate the particle with UV pulses at ~280 nm and ~370 nm, optimal for excitation of bio-fluorophores tryptophan and NADH (nicotinamide adenine dinucleotide) respectively. For each excitation wavelength, fluorescence is detected across two bands embracing the peak emissions of the same bio-fluorophores. Current measurement rates are up to ~125 particles/s, corresponding to all particles for concentrations up to 1.3×104 particles/l. Developments to increase this to ~500 particles/s are in hand. Device sensitivity is illustrated in preliminary data recorded from aerosols of E.coli, BG spores, and a variety of non-biological materials. © 2005 Optical Society of America | en |
dc.format.extent | 1073861 | |
dc.language.iso | eng | |
dc.relation.ispartof | Optics Express | |
dc.subject | Engineering - General | |
dc.title | A single-particle multichannel bio-aerosol fluorescence sensor | en |
dc.contributor.institution | Particle Instruments and diagnostics | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1364/OPEX.13.003583 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |