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Characterization of animal manures using mid-infrared photoacoustic spectroscopy

Du Changwen, Zhou Guiqin, Zhou Jianmin, Wang Huoyan, Chen Xiaoqin, Dong Yuanhua, and Wang Hui

Bioresour Technol 101(15):5 (2010) PMID 20338754

The feasibility of using Fourier transform mid-infrared photoacoustic spectroscopy (FTIR-PAS) for rapid characterization of animal manures was investigated. Animal manure samples were collected from various places in China, and probabilistic neural networks (PNN) and partial least squares (PLS) were initially applied in the qualitative and quantitative analysis of animal manures, respectively. The animal manures exhibited distinctive bands, specifically around 2900-3700cm^-^1, 1200-1800cm^-^1 and 500-1100cm^-^1. There were numerous differences in the spectra of different animal manures, and manures were successful identified by PNN model; organic matter contents in animal manure were well predicted by PLS model, and the calibration coefficient (R^2), validation error and RPD (ratio of standard deviation to predicted error) were 0.93, 2.38% and 2.58%, respectively, suggesting the potential application of FTIR-PAS for the fast characterization of animal manures.

Copyright © 2010 Elsevier Ltd. All rights reserved.

DOI: 10.1016/j.biortech.2010.03.010
Version: za2963e q8za4 q8zb3 q8zc8 q8zdb q8zec q8zf4 q8zg1

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