FIBEROPTIC RAMAN DETECTION OF TRACE LEVELS OF PHOSPHONATE VAPORS CHEMISORBED ONTO AN ALUMINA SUBSTRATE

Authors
EWING KJ DAGENAIS DM BUCHOLTZ F AGGARWAL ID
Citation
Kj. Ewing et al., FIBEROPTIC RAMAN DETECTION OF TRACE LEVELS OF PHOSPHONATE VAPORS CHEMISORBED ONTO AN ALUMINA SUBSTRATE, Applied spectroscopy, 50(5), 1996, pp. 614-618
Citations number
16
Categorie Soggetti
Instument & Instrumentation",Spectroscopy
Journal title
Applied spectroscopy → ACNP
ISSN journal
00037028
Volume
50
Issue
5
Year of publication
1996
Pages
614 - 618
Database
ISI
SICI code
0003-7028(1996)50:5<614:FRDOTL>2.0.ZU;2-U
Abstract
Detection of ppm(v) levels of the nerve agent simulants dimethyl methy lphosphonate (DMMP) and diisopropyl methylphosphonate (DIMP) by chemis orption to an alumina surface followed by fiber-optic Raman spectrosco pic determination is described. Real-time measurements of the increase in the Raman line intensities with respect to time for DMMP and DIMP chemisorption to alumina are presented. A detection limit at the 95% c onfidence interval of 6 ppm(v) is calculated for DMMP vapours at a vap or flow rate of 100 mL/min. Factors which limit lower detection limits are identified and possible solutions presented.