Chapter 25: Instruments for Chapter 25: Instruments for Optical SpectroscopyOptical Spectroscopy

CHE 321: Quantitative Chemical AnalysisCHE 321: Quantitative Chemical AnalysisDr. Jerome Williams, Ph.D.Dr. Jerome Williams, Ph.D.

Saint Leo UniversitySaint Leo University

OverviewOverview

• Instrumental 101Instrumental 101– Radiation SourcesRadiation Sources– Wavelength SelectorsWavelength Selectors– DetectorsDetectors– Signal Processor & ReadoutSignal Processor & Readout

Instrumental 101

• Components in Optical Spectrometer– Radiation Source– Wavelength Selector– Sample Compartment– Detector– Signal Processor & Readout

Figure 25-1 p684

Figure 25-1a p684

Figure 25-1b p684

Figure 25-1c p684

Radiation Sources

• Choice of Source depends on several factors– Instrumental Technique Employed– Region of Electromagnetic Spectrum– Availability– Cost

Figure 25-2 p685

Table 25-1 p686

Table 25-2 p700

Figure 25-18 p709

Figure 25-19a p711

Figure 25-19 b p711