A Fourier transform infrared spectroscopic study of Sphagnum peat, Carex peat, and mixtures of these peat types is reported. Intensity values from selected wavenumber regions of the infrared spectra were correlated with calorific value, degree of decomposition, carbon, and nitrogen content, and content of amino acids and amino sugars, with the use of the method of partial least-squares modelling with latent variables (PLS). The application of this method is shown to give valuable information about properties of peat which have no easily measured quantitative relationship to the infrared spectrum.
Basic Studies of Waterbinding in Peat, Swedish National Energy Administration, Project No. 146119-1 (1986); available, on request, from the authors of the present article.
13.
WoldS.AlbanoC.DunnW. J.EdlundU.EsbensonK.GeladiP.HellbergS.JohanssonE.LindbergW.SjöströmM., in Multivariate Data Analysis in Chemistry, Proc. Nato Adv. Study Inst. on Chemometrics (Reidel Publ. Co., Holland, 1984), pp. 17–95.
14.
WoldS., Technometrics20, 397 (1978).
15.
SharafM. A.IllmanD. L.KowalskiB. R., Chemometrics (Wiley-Interscience, New York, 1986).
WoldS.MartensH. A.WoldH., in The Multivariate Calibration Problem Solved by PLS, RuheA.KågströmB. Eds., Proc. Conf. Matrix Pencils (Springer Verlag, Heidelberg, 1982), pp. 286–293.
The SIMCA 3B BASIC program package is available from Sepanova AB, Östrandsv. 14, S-122 45 Enskede, Sweden, or from Principal Data Components, Columbia, Missouri, U.S.A.
22.
BellamyL. J., The Infrared Spectra of Complex Molecules (Chapman and Hall, London, 1975), 3rd. ed., Vol. 1.
23.
ColtrupN. B.DalyL. H.WiberlyS. E., Introduction to Infrared and Raman Spectroscopy (Academic Press, New York, 1975), 2nd. ed.
HolmgrenA.NordénB., Internal Report, Swedish National Energy Administration, Grant No. 146 119–1 (1986).
35.
PyavtchenkoN. J., 1958. “Determining the Humification Degree on the Basis of Volume Weight.”A recension appears in J. Faresto, Acta Forest. Fenn.71, 2 (1960).
