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Use of linear solvation energy relationships for modeling responses from polymer-coated acoustic-wave vapor sensors.

Authors
Hierlemann-A; Zellers-ET; Ricco-AJ
Source
Anal Chem 2001 Jul; 73(14):3458-3466
NIOSHTIC No.
20042731
Abstract
The applicability and performance of linear solvation energy relationships (LSERs) as models of responses from polymer-coated acoustic-wave vapor sensors are critically examined. Criteria for the use of these thermodynamic models with thickness-shear-mode resonator (TSMR) and surface-acoustic-wave (SAW) vapor sensors are clarified. Published partition coefficient values derived from gas-liquid chromatography (GLC) are found to be consistently lower than those obtained gravimetrically, in accordance with previous reports, suggesting that LSERs based on GLC-derived partition coefficients will not provide accurate estimates of acoustic-wave sensor responses. The development of LSER models directly from polymer-coated TSMR vapor sensor response data is demonstrated and a revised model developed from SAW vapor sensor response data, which takes account of viscoelastic changes in polymeric coating films, is presented and compared to those developed by other methods.
Keywords
Models; Acoustics; Vapors; Chromatographic-analysis; Gases; Gas-liquid-chromatography; Polymers
CODEN
ANCHAM
Publication Date
20010701
Document Type
Journal Article
Email Address
hierlema@iqe.phys.ethz.ch
Funding Type
Grant
Fiscal Year
2001
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-003692
Issue of Publication
14
ISSN
0003-2700
Source Name
Analytical Chemistry
State
MI
Performing Organization
University of Michigan, Ann Arbor
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