Spectroscopic wavelength selectors

Fig. 9.1 General arrangement of spectroscopic absorption/fluorescence measurement A,-wavelength selector, X-light source, D-detector, R-recorder. Intensity of initial (Io), transmitted (I), or fluorescent (Ip) light is related to the concentration of the sample C...

FIGURE 7-2 (a) Construclion materials and (b) wavelength selectors for spectroscopic instruments. 

A schematic block diagram of the instrumentation used for AAS is shown in Fig. 6.3. The components are similar to those used in other spectroscopic absorption methods as discussed in Chapters 2 and 5. Light from a suitable source is directed through the atomizer, which serves as the sample cell, into a wavelength selector and then to a detector. The detector measures how much light is absorbed by the sample. The sample, usually in solution... 

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