Cart
Article
Chemometric Resolution of Mixture Components by Cleardown Rates
Full Text HTML
Hi-Res PDFPurchase the full-text
- PDF/HTML,
figures/images,
references and tables,
(where available)
Section:Abstract
Ion mobility spectrometry (IMS) has recently been gaining attention due to its low cost, light weight, durability, versatility, and portability. IMS combined with time series analysis (TSA) has proved useful for identification of individual chemical species. These methods require the vapor pressure concentration to vary independently with respect to time. When sampling vapors are obtained from liquid mixtures, the analyte vapor compositions may not vary independently. A vapor mixture may be resolved by differential cleardown rates in IMS instruments. Cleardown is the decay in analyte signal when the sample is removed from the instrument. If different mixture components exhibit different affinities in the instrument, then the concentration of the mixture components will vary independently during cleardown, and SIMPLISMA, a feature extraction method, may resolve the components. This approach is an example of reverse frontal chromatography for which the sample is introduced into the detector (the IMS) and removed chromatographically by adsorption onto the molecular sieves. In this research, mixtures of three nerve agent simulants are used to demonstrate this new data extraction method with SIMPLISMA.
Citing Articles
Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.
This article has been cited by 3 ACS Journal articles (3 most recent appear below).
Kinetics Study on the Sol−Gel Reactions in Supercritical CO2 by Using In situ ATR-FTIR Spectrometry
Ruohong Sui, Amin S. Rizkalla and Paul A. CharpentierCrystal Growth & Design2008 8 (8), 3024-3031Kinetics Study on the Sol−Gel Reactions in Supercritical CO2 by Using In situ ATR-FTIR Spectrometry
Ruohong Sui, Amin S. Rizkalla and Paul A. CharpentierCrystal Growth & Design2008 8 (8), 3024-3031In situ ATR-FTIR spectra were collected during the sol−gel synthesis of Si, Ti, and Zr oxides in scCO2. Because of overlapping of the IR peaks, it was difficult to directly correlate the optical absorbance with the analyte concentrations. To solve this ...
Examination of the Covalent Cationization Method Using Narrow Polydisperse Polystyrene
H. C. Michelle Byrd, Sidi A. Bencherif, Barry J. Bauer, Kathryn L. Beers, Yefim Brun, Sheng Lin-Gibson, and Nese SariMacromolecules2005 38 (5), 1564-1572Examination of the Covalent Cationization Method Using Narrow Polydisperse Polystyrene
H. C. Michelle Byrd, Sidi A. Bencherif, Barry J. Bauer, Kathryn L. Beers, Yefim Brun, Sheng Lin-Gibson, and Nese SariMacromolecules2005 38 (5), 1564-1572Four bromine- and phosphonium-terminated polystyrenes were analyzed by matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) using covalent cationization. Bromine-terminated polystyrenes were prepared by atom transfer radical ...
Multivariate Curve Resolution of Wavelet and Fourier Compressed Spectra
Peter de B. Harrington, Paul J. Rauch, and Chunsheng CaiAnalytical Chemistry2001 73 (14), 3247-3256Multivariate Curve Resolution of Wavelet and Fourier Compressed Spectra
Peter de B. Harrington, Paul J. Rauch, and Chunsheng CaiAnalytical Chemistry2001 73 (14), 3247-3256The multivariate curve resolution method SIMPLe to use Interactive Self-Modeling Mixture Analysis (SIMPLISMA) was applied to Fourier and wavelet compressed ion-mobility spectra. The spectra obtained from the SIMPLISMA model were transformed back to their ...
Tools
-
Add to Favorites
-
Download Citation
-
Email a Colleague -
Permalink
Order Reprints
Rights & Permissions
Citation Alerts
History
- Published In Issue February 15, 1998
- Received for review June 17, 1997. Accepted December 5, 1997.
ACS
Network
Facebook
Tweet This
CiteULike
Newsvine
Digg This
Delicious
