Technique definition for Infrared spectroscopy This is the analyzed substance Parameters describing the measurement sample Solid, liquid, gas, solution; see Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" KBr Pellet Powder Nujol Mull The ratio of the speed of light in vacuum to that in a given medium. G.B. 30; 1996, 68, 989 Refractive index value Temperature at which the refractive index has been determined. K K K Parameters describing a substance in the measurement sample The ratio of the speed of light in vacuum to that in a given medium. G.B. 30; 1996, 68, 989 Refractive index value Temperature at which the refractive index has been determined. K K K Blank reference Parameters describing the reference Solid, liquid, gas, solution; see Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" KBr Pellet Powder Nujol Mull The ratio of the speed of light in vacuum to that in a given medium. G.B. 30; 1996, 68, 989 Refractive index value Temperature at which the refractive index has been determined. K K K Parameters describing a substance in the reference The ratio of the speed of light in vacuum to that in a given medium. G.B. 30; 1996, 68, 989 Refractive index value Temperature at which the refractive index has been determined. K K K The actual IR spectrum This is a set of values of dimension @length, containing the abscissa value for each raw data ordinate value. This set of values has a unit of time. See: ASTM E 1947-98. and Appl. Spectrosc. 42, 1, 1988, 151-162. s X position (e.g. for surface mapping) m m m m Y position (e.g. for surface mapping) m m m m Z position (e.g. for surface mapping) m m m m This is a set of values of dimension @length, containing the abscissa value for each raw data ordinate value. This set of values has a unit of wavelength or wavenumber. See: ASTM E 1947-98. and Appl. Spectrosc. 42, 1, 1988, 151-162. m m m This is a set of values of dimension @length, containing the ordinate values. This set of values has a unit of detector-unit. This is a required field for datasets containing raw data. See: ASTM E 1947-98. Can be in Absorbance, Transmittance, or %T units, Kubelka-Munk, or Reflectance. See also Appl. Spectrosc. 42, 1, 1988, 151-162. 1 1 1 1 1 Parameters defining the measurement Pathlength in cm. See Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" m Specifies the Coblentz Class of the spectrum (1,2,3, or 4) (see “The Coblentz Society Specifications for Evaluation of Research Quality Analytical Infrared Spectra (Class II),” Anal. Chem. 47,2339 (1975).). 1 4 Specifies the IUPAC Class of digital representation (A, B, C). See W. B. Derendjaev, Appl. Spectrosc. 40, 707 (1986). A B C (7.4.1) ##SAMPLING PROCEDURE= (TEXT). First entry in this field should be MODE of observation (trans- mission, specular reflection, PAS, matrix isolation, pho- tothermal beam deflection, etc.), followed by appropriate additional information, i.e., name and model of acces- sories, cell thickness, and window material for fixed liq- uid cells, ATR plate material, angle and cone of inci- dence, and effective number of reflections for ATR measurements, polarization, and special modulation techniques, as discussed by Grasselli et al (see J. G. Grasselli, P. R. Griffithsy and R. W. Hannah, Appl. Spectrosc. 36, 87 (1982)). From: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" transmission specular reflection PAS matrix isolation photothermal beam deflection ATR see: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" m see: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" see: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" see: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" 1 see: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" 1 see: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" see: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" see: Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" IR peak table Peak position value on x axis See Appl. Spectrosc. 42, 1988, 151-162. m m m Peak number used to identify a particular peak. See: ASTM E 1947-98. The distance between the peak maximum and the peak base, measured in a direction parallel to the axis representing the detector response. O.B. 102 1 1 1 1 1 The calculated width of the peak, given in a unit of retention-unit. See: ASTM E 1947-98. m m m The area enclosed between the peak and the baseline. O.B. 101 1 Peak assignments for components, functional groups, or vibrational modes; see Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" Parameters defining the measurement Pathlength in cm. See Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" m IR Interferogram This is a set of values of dimension @length, containing the abscissa value for each raw data ordinate value. This set of values has a unit of time. See: ASTM E 1947-98. and Appl. Spectrosc. 42, 1, 1988, 151-162. s This is a set of values of dimension @length, containing the ordinate values. This set of values has a unit of detector-unit. This is a required field for datasets containing raw data. See: ASTM E 1947-98. Can be in Absorbance, Transmittance, or %T units, Kubelka-Munk, or Reflectance. See also Appl. Spectrosc. 42, 1, 1988, 151-162. kg m s A Parameters defining the measurement A fraction whose denominator is the number of possible aliases for a given sample and whose numerator is the number of the alias represented by the data. For sampling at alternate laser fringes, the number of aliases is 2, and the alias for the region starting at zero frequency is 1, giving an ##ALIAS=of 1/2. see Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" Pathlength in cm. See Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form" m The number of data points before zero path difference (ZPD). See Appl Spectrosc, Vol 42(1), pp. 151-162, 1988 "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form". Parameters describing the instrument Name of the instrument vendor. Name of the instrument model. Nominal resolution in x axis units, as a single number for spectra at constant resolution throughout. m m m