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- W2000851953 abstract "As part of an effort to develop a portable probe for real-time detection of chemical agents using Raman spectroscopy, the kinetics of adsorption of selected volatile organic molecules on high surface area silica supports was studied using Raman spectroscopy with 785-nm excitation. Two aspects of this work are described. First, the affinity of organic molecules in a flowing gas stream to ultraporous mineralized wood substrates was shown to be very high under a variety of representative conditions, suggesting that a sensor based on in-situ Raman measurement of adsorption rates may be feasible. Moreover, the mechanism of adsorption was found to vary for different molecules thereby promoting a high degree of chemical specificity. Second, the possibility of using Surface-Enhanced Raman Spectroscopy (SERS) to enhance Raman signals and thereby improve the sensitivity of an in-situ Raman probe even further was demonstrated. Detection limits were estimated based on the current state of development of the approach." @default.
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- W2000851953 date "2004-12-16" @default.
- W2000851953 modified "2023-09-23" @default.
- W2000851953 title "In situ Raman probe for chemical agents using ultraporous substrates" @default.
- W2000851953 doi "https://doi.org/10.1117/12.572006" @default.
- W2000851953 hasPublicationYear "2004" @default.
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