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CRYO-1 and CRYO-2 Cryogenic Systems
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The capabilities of cryoluminescence techniques are implemented
using cryogenic CRYO-1 and CRYO-2 systems. The CRYO-1 cryospectral
system (shown in the picture) contains a FLUORAT®-02-2M analyzer,
cryogenic unit, and a spectral analysis unit (an LM-3 monochromator),
which are connected via fiber optic bundles. The cryogenic unit,
where a substance under study is cooled to the liquid-nitrogen temperature
(77 K), consists of a rack, Dewar vessel, and device for the uniform
feed of samples for measuring (maximum of 12 simultaneously cooled
samples). The CRYO-1 system is designed for determination of mass
concentration of benz[a]pyrene in various objects from quasi-line
fluorescence spectra due to the Shpol'skii effect. Using this technique,
a high sensitivity and selectivity of the analysis are obtained.
The CRYO-2 cryospectral system comprises a FLUORAT®-02-2M analyzer
and a cryogenic unit, which are also connected with each other via
fiber optic bundle. The CRYO-2 is designed for measuring concentration
of lead in samples of drinking, natural, and wastewater, and in
food products. The analytical techniques are based on measuring
the intensity of luminescence of lead chloride complexes in solutions
at a temperature of 77 K, from which the lead concentration using
a calibrated FLUORAT®-02-2M analyzer is measured. In addition, Bi,
Te, and Se can also be detected. These techniques are high-sensitive
and need very simple sample preparation.
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