Mercury vapor is drawn through an appliance that
is equipped with a pre-filter and proprietary iodine-impregnated
secondary sorbent filter. As the mercury vapor contacts the iodine-impregnated
sorbent, the elemental mercury is trapped chemically converted
to mercury (type II) iodide (HgI2), a mercury salt. |
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| The advantages of the well-known atomic absorption
(AA) spectrometry are utilized to the full extent and the
technique itself is brought to perfection in the RA-82
and RA-915+ Mercury Analyzer and further modifications RA-915
MiniCEM and RA-915 RP-M324 to make them state-of-the art,
convenient, accurate, and extremely sensitive instruments due
to the use of the Zeeman atomic absorption spectrometry using
high frequency modulation of light polarization (ZAAS - HFM).
The high sensitivity and selectivity of the instruments allow
the requirements for the sample preparation and its weight to
be made much more lenient. The polarization modulation device
embodies novel proprietary design features and components. |
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| In modern spectroscopic instruments, the IR absorption,
transmission, or scattering spectra are detected by scanning the
phase shift between two split parts of a light beam, which is
the essence of the Fourier-transform spectrometry.
This technique provides a significant gain in photometric accuracy
and frequency precision. The InfraLUM FT-02 mid-IR FT
and InfraLUM FT-10 near-IR FT spectrometers, featuring
a state-of-the-art robust vibration- and misalignment-proof design,
allow a user to conveniently perform a variety of analytical functions,
such as identification of an unknown substance, qualitative and
quantitative analysis of solutions, mixed substances, or of complex
natural objects, detection of impurities in atmospheric air and
gases, and a functional structural analysis. Using a correlation
analysis, from the IR spectrum of a sample an analyst can also
determine its physical and chemical properties or biological characteristics,
such as sprouting ability of seeds, caloric content of food products,
grain size, density, etc. To facilitate performing the analyses,
the instruments are furnished with a variety of accessories, dedicated
SpectraLUM control, data acquisition and processing software package,
and calibration and reference databases. The capability of fast
identification and detection of many constituents of a complex
mixture in a single run brings the performance of these instruments
on par with a whole chemical laboratory. |
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