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Search Results: Analytical chemistry

The science of chemical characterization and measurement. Qualitative analysis is concerned with the description of chemical composition in terms of...
Charge-transfer-device detectors have become common in many systems used for chemical analysis, and are often an attractive alternative to...


= Encyclopedia Article; = Research Update
Figure 1.Fiber-optic-probe Raman spectrometer system. The charge-coupled-device (CCD) camera is attached to a cryogenically cooled housing that contains the detector along with the controlling electronics. The fiber-optic bundle carries the excitation wavelength in a central fiber to the probe, and the Raman scatter is collected in the outer fibers of the bundle.
Figure 2.Imaging thin-layer-chromatography system. The ultraviolet (UV) illuminator excites fluorescence from the analytes on the thin-layer-chromatography (TLC) plate. The fluorescent wavelengths pass through the filter and are imaged with the charge-coupled-device (CCD) camera.
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