Vibration–rotation spectra of deuterated nitrous acid, DONO

1984 ◽  
Vol 62 (12) ◽  
pp. 1300-1305 ◽  
Author(s):  
L. O. Halonen ◽  
C. M. Deeley ◽  
I. M. Mills ◽  
V.-M. Horneman
Keyword(s):  
Fourier Transform ◽  
Standard Deviation ◽  
High Resolution ◽  
Infrared Spectra ◽  
Spectral Resolution ◽  
Nitrous Acid ◽  
Fourier Transform Infrared ◽  
Asymmetric Top ◽  
Vibration Rotation ◽  
Better Than

High-resolution Fourier transform infrared spectra have been recorded and analyzed for the ν3, ν4, ν5, and ν6 fundamental bands of trans-DONO, and for the ν4 fundamental of cis-DONO. The spectral resolution was better than 0.01 cm−1, and the bands have been fitted using an asymmetric top Hamiltonian with a standard deviation of around 0.0006 cm−1.

Vibration–rotation spectra of nitrous acid, HONO

1985 ◽  
Vol 63 (7) ◽  
pp. 962-965 ◽  
Author(s):  
C. M. Deeley ◽  
I. M. Mills ◽  
L. O. Halonen ◽  
J. Kauppinen
Keyword(s):  
Fourier Transform ◽  
Excited State ◽  
Standard Deviation ◽  
High Resolution ◽  
Infrared Spectra ◽  
Ground State ◽  
Nitrous Acid ◽  
Vibration Rotation ◽  
Line Positions ◽  
Better Than

High-resolution Fourier-transform infrared spectra have been recorded and analyzed for the ν4 ν5, and ν6 fundamental bands of trans-HONO, and for the ν4 fundamental of cis-HONO. The spectral resolution was better than 0.01 cm−1, and the rotational structure has been analyzed to give improved ground-state and excited-state rotational constants, with a standard deviation of the fit to the observed line positions of around 0.0006 cm−1. Two Coriolis interactions have been analyzed between the ν5 and ν6 bands of trans-HONO.

Measurement of the Sensitivity and Photometric Accuracy of FT-IR Spectrometers

2000 ◽  
Vol 54 (8) ◽  
pp. 1192-1202 ◽  
Author(s):  
Bryan T. Bowie ◽  
Peter R. Griffiths
Keyword(s):  
Fourier Transform ◽  
Standard Deviation ◽  
Thick Film ◽  
Polyethylene Terephthalate ◽  
Noise Level ◽  
Fourier Transform Infrared ◽  
Signal Averaging ◽  
Ft Ir ◽  
Better Than

A method has been developed to investigate the sensitivity and photometric accuracy of a Fourier transform infrared (FT-IR) spectrometer by statistically analyzing a set of spectra of a 75 μm thick film of polyethylene terephthalate (PET). These tests were applied to three commercial FT-IR spectrometers. Although the photometric accuracy of all three instruments was generally better than 0.1%, small artifacts that could not be removed by signal averaging were often observed where strong bands should have a transmittance of less than 0.01%. Binding of the moving mirror of one of the spectrometers appeared to degrade its performance. When the standard deviation of the noise on 100% lines was calculated in the conventional way, none of the instruments gave efficient signal averaging after 25 scans had been coadded, because of small slopes in the baseline. By calculation of the noise level by successive difference, signal averaging was improved, but even with this approach the noise level on one of the instruments did not decrease after 100 scans had been averaged.

High-resolution Fourier transform infrared spectra of 12C32S, 12C33S, 12C34S, and 13C32S

1987 ◽  
Vol 124 (2) ◽  
pp. 450-457 ◽  
Author(s):  
James B. Burkholder ◽  
Edward R. Lovejoy ◽  
Philip D. Hammer ◽  
Carleton J. Howard
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Infrared Spectra ◽  
Fourier Transform Infrared ◽  
Fourier Transform Infrared Spectra

The KBr Pellet: A Useful Technique for Obtaining Infrared Spectra of Inorganic Species

1979 ◽  
Vol 33 (6) ◽  
pp. 581-584 ◽  
Author(s):  
R. M. Gendreau ◽  
R. Burton
Keyword(s):  
Fourier Transform ◽  
Standard Deviation ◽  
Sample Preparation ◽  
Infrared Spectra ◽  
Fourier Transform Infrared ◽  
Spectral Matching ◽  
Inorganic Species ◽  
Fourier Transform Infrared Spectrometer ◽  
Infrared Spectrometer ◽  
Sulfate Species

The reproducibility of the KBr pelleting technique for inorganic sulfates was assessed using a Fourier transform infrared spectrometer. Day-to-day variation in peak frequencies of selected bands had standard deviations ranging from 0. to 1.5 cm−1. This 1 cm−1 standard deviation was shown to be due to changes in bandshape, probably due to variations in sample preparation from operator to operator. It was concluded that the reproducibility of sulfates in KBr is sufficient to allow the design of computerized spectral matching programs to identify specific sulfate species based on band frequencies and intensities.

Sign in / Sign up

Export Citation Format

Share Document