1983
DOI: 10.1021/ac00253a035
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Photoacoustic cell for Fourier transform infrared spectrometry of surface species

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Cited by 22 publications
(5 citation statements)
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“…Results for total carbon analysis, transmission near-IR spectroscopy, ESCA, and FTIR-PAS are compared in Table I for various ODS coverages on silica (Partisil 10). The surface characterization of silica substrates has been attempted previously with ESCA (22,23) or PAS (24,25). To our knowledge these techniques have not been compared to each other, or to more conventional bulk analyses, for the quantification or surface silanol and bonded phase coverages.…”
Section: Resultsmentioning
confidence: 99%
“…Results for total carbon analysis, transmission near-IR spectroscopy, ESCA, and FTIR-PAS are compared in Table I for various ODS coverages on silica (Partisil 10). The surface characterization of silica substrates has been attempted previously with ESCA (22,23) or PAS (24,25). To our knowledge these techniques have not been compared to each other, or to more conventional bulk analyses, for the quantification or surface silanol and bonded phase coverages.…”
Section: Resultsmentioning
confidence: 99%
“…Some of them contain general content of the use and application of FT-IR/PAS [22][23][24][25][26][27][28][29][30][31], others are more specific and are devoted to real-time PA parallel detection of products from catalyst libraries [32], step-scan and depth profiling analysis [33][34][35][36][37][38][39][40], the effect of particle size on FT-IR/PAS spectra [41][42][43][44], the temperature effect on PA signal [45], sample emission effects [46], and synchrotron IR/PAS [47]. During a PA measurement the sample is enclosed in a small, tightly closed sample compartment called PA cell [48][49][50][51][52][53][54]. Nowadays commercially available PA detector fits to most modern FT-IR spectrometers [55].…”
Section: Introductionmentioning
confidence: 99%
“…The reasons for the rapid development and attention that this technique has experienced are self-evident: (J) PAS requires little to no sample preparation, (2) PAS involves direct detection of the radiation absorbed by the sample and as a result facilitates the detection of weakly absorbing species in the presence of strongly absorbing species, (3) PAS measurements are relatively insensitive to scattering and particle size effects, and (4) PAS may be used to probe the subsurface of the sample or to obtain "depth profile" information. Although most previous condensed phase photoacoustic investigations have involved examinations of samples at ambient temperatures, several laboratories have extended the conditions of the photoacoustic experiment to temperatures above and below ambient (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17). However, of these studies, only two investigators have reported measurements above 200 °C (7, [14][15][16][17].…”
mentioning
confidence: 99%