作者: Changwen Du , Zhongqi He , Jianmin Zhou
DOI: 10.1007/978-94-007-5634-2_8
关键词: Photoacoustic spectroscopy 、 Infrared 、 Humic acid 、 Spectral line 、 Infrared spectroscopy 、 Absorption (electromagnetic radiation) 、 Leonardite 、 Chemistry 、 Transmittance 、 Analytical chemistry
摘要: Fourier transform infrared photoacoustic spectra (FTIR-PAS) have been applied to characterize soil humic substances, i.e., acid (HA), mobile (MHA), and recalcitrant calcium humate (CaHA) from Leonardite soil. Conventional transmittance FTIR-PAS of these substances were collected. The significantly different the spectra. Totally, absorption bands in wavenumber range 2,000–3,800 cm−1 broader than that spectra, but 1,000–1,800 obviously narrow band height both aliphatic carboxyl groups was lower spectra; however, ratios two similar, ratio can be used show capability water repellence substances. All results indicated technique could provide a simple fast method for quantifying functional