Salient features of infrared spectral analysis of a glass-forming batch containing boric and silicic acids

Passive Infrared (IR) Spectral-radiometry of gases in the atmosphere is extremely important today, when pollution of the environment by natural ejections and those produced by human activity is growing very high. Particularly, spectral analysis of hot gas ejections i.e. combustion products from industrial plants is an essential part of ecological monitoring of the atmosphere. In this paper we present the results of IR spectral analysis of hot gas ejections from industrial plants in the spectral range from 2.5 to 5.5µm, at a distance of 3000m. The obtained with a hydrocarbon gas group, SO2, N2 O, CO and CO2 gases, as well as H2 O vapor. Relative content of ejected gases (to CO-CO2 group) per unit time was evaluated by means of an integral intensity ratio for each gas. Distant IR Spectral analysis of hot gas ejections (both industrial firms, and various vehicles) have huge value, in particular at ecological monitoring of an environment.

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A new hybrid strategy for constructing a robust calibration model for near-infrared spectral analysis

Analytical and Bioanalytical Chemistry ◽

10.1007/s00216-004-2937-y ◽

2004 ◽

Vol 381 (3) ◽

pp. 795-805 ◽

Cited By ~ 18

Author(s):

Da Chen ◽

Bin Hu ◽

Xueguang Shao ◽

Qingde Su

Keyword(s):

Spectral Analysis ◽

Near Infrared ◽

Calibration Model ◽

Hybrid Strategy ◽

Infrared Spectral

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Solid-phase polymerizations at high pressures

Australian Journal of Chemistry ◽

10.1071/ch9700511 ◽

1970 ◽

Vol 23 (3) ◽

pp. 511 ◽

Cited By ~ 17

Author(s):

MG Bradbury ◽

SD Hamann ◽

M Linton

Keyword(s):

High Pressure ◽

Spectral Analysis ◽

Solid State ◽

High Pressures ◽

Solid Phase ◽

Crystal Form ◽

Optical Cell ◽

Itaconic Anhydride ◽

Temperature Requirements ◽

Infrared Spectral

The following compounds have been found to polymerize spontaneously in the solid state at pressures in the range 10-50 kbar, at temperatures between 20 and 200�C: acrylamide, p-phenylstyrene, potassium p-styrenesulphonate, itaconic anhydride, maleic anhydride, maleimide, 1,2,3,6-tetrahydrophthalic acid, 1,2,3,6-tetrahydrophthalic anhydride, acenaphthylene, p-benzoquinone, N,N'-p-phenylene-dimaleimide, sulpholene, diphenylacetylene, 8-trioxan. The pressure-temperature requirements for polymerization have been determined in a high-pressure "squeezer" apparatus and in a diamond optical cell which permits infrared spectral analysis of a specimen while it is under compression. Apart from diphenylacetylene and trioxan, the compounds that polymerized were either monosubstituted ethylenes or cyclic 1,2-disubstituted ethylenes. Non-cyclic 1,2-disubstituted ethylenes and tri-substituted and tetra-substituted ethylenes failed to polymerize. There is evidence that shearing stresses played a part in some of the reactions. 1-Allyl-2-thiourea did not polymerize, but transformed from its stable crystal form I to the unstable modification 11.

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Fourier Transform Infrared Spectral Analysis of Polyisoprene of a Different Microstructure

International Journal of Polymer Science ◽

10.1155/2013/937284 ◽

2013 ◽

Vol 2013 ◽

pp. 1-5 ◽

Cited By ~ 16

Author(s):

Dongmei Chen ◽

Huafeng Shao ◽

Wei Yao ◽

Baochen Huang

Keyword(s):

Nuclear Magnetic Resonance ◽

Spectral Analysis ◽

Fourier Transform ◽

Magnetic Resonance ◽

Detailed Analysis ◽

Fourier Transform Infrared ◽

Ftir Spectra ◽

H Nmr ◽

Infrared Spectral

Some polyisoprene samples of different microstructure contents were studied by Fourier transform infrared (FTIR) and1H Nuclear magnetic resonance (1H NMR). On the basis of detailed analysis of FTIR spectra of polyisoprene, the shift of absorption peaks caused by microstructure content’s variation was discussed. The contents of the polyisoprene samples’ microstructure which was determined by the1H NMR was used as the standard. Through the choice, calculation, and comparison with the corresponding absorption peaks of FTIR, a method based on the results of the analysis has been developed for the determination of the microstructure contents of polyisoprene by FTIR.

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