蝶形花科4种木材纤维红外光谱的鉴别方法探讨

Identification methods for infrared spectrum of four kinds wood fiber of Papilionaceae plants

采用傅立叶变换红外光谱（FTIR）法测定了蝶形花科4种木材纤维红外光谱,通过对4种木材纤维红外光谱异有峰分析及共有峰相对峰强的比较,结果表明区别黄檀属和红豆属的区域主要在1 650~1 550 cm-1、1 050~1 020cm-1、810 cm-1三个峰段,其中黄檀属在1 050~1 020 cm-1表现为双峰,红豆属表现为单峰;810 cm-1附近红豆属表现为强吸收峰,而黄檀属没有此峰,可以作为区别两个属的特征峰。由此也可以作为区别同是红木的降香黄檀和花梨木的特征峰。不同木材纤维显现出来的红外光谱的特征峰,可以运用在木材的分类以及鉴别。

Using Fourier transform infrared spectroscopy（FTIR） method to determine the infrared spectrum of four kinds wood fiber of Papilionaceae plants. Through analyzing their different peak spectrum and the comparing common peak relative strength, the results showed that the difference area between Dalbergia and 0rmosia were mainly in 1 650 ~1 550 cm-1, 1050 ~1 020 cm-1, 1020 cm-1three peak spectrum period. Dalbergia display bimodal peak spectrum and 0rmosia show unimodal peak spectrum in 1050 ~1020 cm-1. 0rmosia have strong absorption peak near 810 cm-1but Dalbergia have not them, which an be used as the difference between the two genus. This characteristic peak also can be used as the difference between D. odorifera and 0. henryi which belong red woods. There is a good application prospect in the field of wood classification and identification by using the infrared spectra of wood. This technology is expected to become one of the effective ways of judicial authentication system.