spec20 - ThevisibleUVspectrometerweusepermitsthe

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SOURCE MONO- CHROMATOR DETECTOR SAMPLE 37.7 SLIT The visible-UV spectrometer we use permits the  quantitative determination of the absorption and  transmission of light in the wavelength range  200 nm *  - 900 nm by a clear liquid sample.   The device consists of simple components. * We actually encounter a lower wavelength limit of ~350 nm due to the use of glass sample containers. Glass absorbs significant amounts of radiation below 350 nm.
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sample  compartment wavelength  adjustment zero adjustment wavelength   switch 100%   transmittance   adjustment mode switch The Apparatus The Apparatus display
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Variations in Spectrometers Some models of spectrometers include  other switches  and  capabilities which  do not play a role do not play a role  in our exercises, e.g., mode  switches labeled “concentration” or “factor” Some models of spectrometers do not include the  wavelength wavelength switch switch  shown in the preceding picture. A few of the spectrometers have an  analog analog instead of digital digital   output. While the details may differ slightly, the basic procedures described herein are the same for all the models. wavelength
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This note was uploaded on 02/20/2012 for the course CHE 134 taught by Professor Staff during the Spring '08 term at SUNY Stony Brook.

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spec20 - ThevisibleUVspectrometerweusepermitsthe

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