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A measuring complex of spectral instrumentation for examination of the ingredient composition, optical characteristics and microstructure of the dispersed phase of the combustion products of energy fuels and atmospheric anthropogenic emissions is discussed. The measuring complex includes a multi-pass cell with external and internal electric heating, which makes it possible to change the temperature of the radiation propagation medium in a multi-pass cell in the temperature range of 300–800 K, in the pressure range of 1*102 ≤ P ≤ 3*106 Pa with optical path L = 2, 4, 6, ... 30 m. Registration of spectra is performed by an upgraded spectrometer IKS-31 with interchangeable sources and radiation receivers, interchangeable diffraction gratings and cut-off light filters, interchangeable quartz windows, CaF2, LiF, MgF2, IKS-25, KRS-5, ensuring their operation in the spectral region of 0.2–100 μm with the spectral resolution limit Δν = 0.2 cm-1. The measuring complex has a complete metrological assurance. The obtained data on the spectral dependences of the effective cross sections for absorption, scattering, and attenuation of radiation are used to restore the microstructure of the dispersed phase of the combustion products. The atmospheric emissions of combustion products of wood, industrial energy, air carriers, decomposition products of asbestos-cement slabs during their calcinations were analyzed.

Measuring complex for examination the combustion products’ composition and the soot particulate sol microstructure