红外光谱在土壤学中的应用

红外光谱技术在土壤学中已得到较广泛的应用,它能够综合地反映土壤体系的物质组成及其相互作用,为研究土壤中物质循环及其作用过程提供了新的手段。本文回顾了近年来红外光谱技术在土壤学中的应用,包括透射光谱在土壤定性分析中的应用,并重点介绍红外反射光谱与化学计量学相结合的光谱建模技术发展情况及其在土壤定量分析中的应用。同时本文探讨了基于光声效应的红外光声光谱技术,红外光声光谱非常适合用于土壤这种复杂、非透明体系的研究,能够克服传统透射和反射光谱中存在的缺陷,测定快速方便,并具有较高的灵敏度和测量精确度,具有很大的应用潜力。

Application of infrared spectroscopy in soil science

Infrared spectroscopy has been widely used in soil science, and the soil spectra are the comprehensive demonstrations of soil components and their interactions, which provide a new tool in soil research. This paper gave a review on the applications of infrared spectroscopy in soil science in recent years, including the application of transmission and reflectance spectroscopy, with a focus on the reflectance infrared spectroscopy combined with chemometrics applied in soil quantitative analysis. The infrared photoacoustic spectroscopy was also introduced as a new spectral technique which was based on the absorption of electromagnetic radiation by soil samples, it is very feasible to study soil system, which is complex and nontransparent. It can overcome the disadvantages of traditional transmission and reflection spectral techniques, and has great potential in application with its celerity, convenience, high sensitivity and accuracy.