FTIR/ATR Spectroscopy Applied to the Rapid Determination of Chemical Oxygen Demand of Wastewater

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A directly rapid quantification method for chemical oxygen demand (COD) of wastewater was established by Fourier transform infrared (FTIR) spectroscopy combined with attenuated total reflection (ATR) technology and moving window partial least squares (MWPLS) method with changeable parameters. All samples were firstly divided into the calibration set and the prediction set. And then according to the predicion effect, the optimal model was selected, and the corresponding waveband, number of adopted wavenumbers, PLS factor, root mean squared error of predication (RMSEP), correlation coefficient of predication (RP) were 3152-1109 cm-1, 1060, 8, 21.5 mg/L, and 0.981 respectively, which was obviously superior to the optimal PLS model on the whole spectral collecting region. The result shows that FTIR/ATR spectroscopy can be applied to the rapid determination of COD of wastewater, and the waveband selected by MWPLS method with changeable parameters has higher signal to noise ratio, which can effectively improve the precision of the predictive model.

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Periodical:

Edited by:

David Wang

Pages:

820-825

DOI:

10.4028/www.scientific.net/KEM.500.820

Citation:

T. Pan et al., "FTIR/ATR Spectroscopy Applied to the Rapid Determination of Chemical Oxygen Demand of Wastewater", Key Engineering Materials, Vol. 500, pp. 820-825, 2012

Online since:

January 2012

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$35.00

[1] F. M. Mirabella and N. J. Harrick, Internal reflection spectroscopy: review and supplement. New York: Harrick Scientific Corporation, (1985).

[2] R. H. Wilson, Fourier Transform mid-infrared spectroscopy for food analysis, Trends in Analyical Chemistry, Sep. 1990, pp.127-131.

[3] P. H. Axelsen, W. D. Braddock, H. L. Brockman, Use of internal reflectance infrared spectroscopy for in situ study of supported lipid monolayers, Applied Spectroscopy, vol. 49, no. 5, 1995, pp.526-531.

DOI: 10.1366/0003702953964273

[4] T. Fujii, Y. Miyahara, Infrared ATR spectroscopy of substrates in aqueous solution using cryoenrichment and its application in enzyme-activity assays, Applied Spectroscopy, vol. 52, no. 2, 1998, pp.128-133.

DOI: 10.1366/0003702981942456

[5] K. Nakanishi, A. Hashimoto, T. Pan, M. Kanou, T. Kameoka, Mid-infrared spectroscopic measurement of ionic dissociative materials in metabolic pathway, Applied Spectroscopy, vol. 57, no. 12, 2003, pp.1510-1516.

DOI: 10.1366/000370203322640152

[6] T. Pan, A. Hashimoto, M. Kanou, K. Nakanishi, T. Kameoka, Development of a quantification system of ionic dissociative metabolites using an FT-IR/ATR method, Bioprocess and Biosystems Engineering, vol. 26, no. 2, 2003, pp.133-139.

DOI: 10.1007/s00449-003-0343-z

[7] J. H. Jiang, R. J. Berry, H. W. Siesler, Y. Ozaki, Wavelength interval selection in multicomponent spectral analysis by moving window partial least-squares regression with applications to mid-infrared and near-infrared spectroscopic data, Anal. Chem, vol. 74, 2002, pp.3555-3565.

DOI: 10.1021/ac011177u

[8] S. Kasemsumran, Y. P. Du, K. Murayama, M. Huehne, Y. Ozaki, Near-infrared spectroscopic determination of human serum albumin, γ-globulin, and glucose in a control serum solution with searching combination moving window partial least squares, Anal. Chim. Acta, vol. 512, 2004, pp.223-230.

DOI: 10.1016/j.aca.2004.02.045

[9] Y. P. Du, Y. Z. Liang, J. H. Jiang, R. J. Berry, Y. Ozaki, Spectral regions to improve prediction ability of PLS modes by changeable size moving window partial least squares and searching combination moving window partial least squares, Anal. Chim. Acta, vol. 501, 2004, pp.183-191.

DOI: 10.1016/j.aca.2003.09.041

[10] J. Xie, T. Pan, J. M. Chen, H. Z. Chen, X. H. Ren, Joint optimization of Savitzky-Golay smoothing models and partial least squares factors for near-infrared spectroscopic analysis of serum glucose, Chinese Joumal of Analytical Chemistry, vol. 38, no. 3, 2010, pp.342-346.

DOI: 10.3724/sp.j.1096.2010.00342

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