Raman spectroscopy has been demonstrated to be a convenient tool for the elucidation of molecular structure and quantitative analysis of chemical compounds. Some intrinsic disadvantages of this technique restrict its use only to research facilities. The goal of this research is to develop methods to minimize these disadvantages and prove that Raman spectroscopy can be widely used in industrial applications. A simple device along with fiber optics is used in a dispersive Raman system to show the reproducibility of measurements of solid samples without an internal standard. Changes in Raman features due to temperature changes are examined and discussed in this report. A wavelength calibration routine is developed for multichannel detectors which allows the errors for the estimation of line positions in a spectrum to be less than 0.5 A. The Hadamard transform technique is used to measure chemical agent simulants on metal surface and offers an improvement in the limit of detection for the quantitative analysis of Raman measurements. A diode laser Raman system composed of a compact diode laser source, a dispersive spectrograph, and fiber optics is established and tested. The stability of the excitation wavelength is improved by using a fiber bundle with a larger core diameter. Three filters are also compared for their Rayleigh line rejection efficiency. Chemical agent simulants are also measured with the diode laser system to test the possibility of building a field monitoring Raman system. In order to measure samples of small amount, surface-enhanced Raman spectroscopy (SERS) is also investigated in this research. Quantitative analysis with this technique is difficult by directly using enhanced Raman spectra, but the kinetic phenomenon of SERS exhibits the possibility of sample quantitation. To illustrate the application of Raman spectroscopy in the polymer / industry, samples of fire-retardant in nylon are successfully analyzed with the FT-Raman system for the determination of homogeneity and amount of fire-retardant in samples. / Source: Dissertation Abstracts International, Volume: 55-04, Section: B, page: 1411. / Major Professor: Thomas J. Vickers. / Thesis (Ph.D.)--The Florida State University, 1994.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_77172 |
| Contributors | Tseng, Ching-Hui., Florida State University |
| Source Sets | Florida State University |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | 173 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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