6种阔叶树材红外光谱特征的比较  

Comparison and analysis of FT-IR spectra for six broad-leaved wood species

作　　者：赵阅书[1] 薛晓明[1] 宋小娇[1] 南程慧[1] 陈润琨 王艺 ZHAO Yueshu;XUE Xiaoming;SONG Xiaojiao;NAN Chenghui;CHEN Runkun;WANG Yi(Key Laboratory of National Forestry and Grassland Administration on Wildlife Evidence Technology,Nanjing Forest Police College,Nanjing 210023,China;Guangxi Zhuang Autonomous Region Forest Public Security Bureau,Nanning 530022,China;Public Security Bureau of Huian County,Huian 362199,Fujian,China)

机构地区：[1]南京森林警察学院,野生动植物物证技术国家林业和草原局重点实验室,南京210023 [2]广西壮族自治区森林公安局,南宁530022 [3]惠安县公安局,福建惠安362199

出　　处：《林业工程学报》2019年第5期40-45,共6页Journal of Forestry Engineering

基　　金：中央高校基本科研业务费专项资金项目(LGYB201716);江苏省自然科学基金(BK20181338);江苏省公安厅厅级科技研究计划(2016KX027)

摘　　要：采用红外光谱(FT?IR)法对6种阔叶树材进行研究,通过对共有吸收峰、特征峰、相对吸收强度和二阶导数谱进行比较分析,得出了6种阔叶树材的具体差异。试验结果表明:6种阔叶树材的红外图谱共性特征较为明显,1 000~4 000 cm^-1范围内的14个吸收峰中有12个吸收峰为共有峰;其中最强峰分别为1 033~1 052 cm^-1范围内的C—O伸缩振动吸收峰和3 394~3 412 cm^-1范围内的羟基特征峰。6种阔叶树材的FT?IR图谱、相对吸收强度和二阶导数谱均有不同程度的差异:在1 110~1 122 cm^-1范围内只有楠木出现较小吸收峰;楠木和杜仲在1 237~1 264 cm^-1范围内形成较宽吸收峰;1 624~1 657 cm^-1范围内,杜仲、花榈木、凹叶厚朴这3种木材具有一定的差异;而枫香和喜树在1 559~1 648 cm^-1范围内明显区别于其他4个树种。相对吸收强度的比较结果为A3 402/A1 510和A1 661/A1 510处的2个峰位的差别较大;在1 000~1 800 cm^-1区域内,6个树种的红外光谱的二阶导数谱在从峰形、吸收峰的位置、形状以及出峰数量上存在显著差异。通过对6种常见阔叶树材红外光谱特征的比较和分析,可为木材的快速鉴定和分类提供理论依据。Six broad?leaved wood species were analyzed using the Fourier transform infrared spectroscopy(FT?IR).In this research,the comparison and analysis were carried out among common absorption peaks,characteristic peaks,relative absorption intensity and second derivative spectra.All the results showed that the common features of the infrared spectrum of the six broad?leaved wood species were obvious.There were 14 absorption peaks in the range of 1 000-4 000 cm-1,twelve of which served as common peaks.In addition,there were two strongest peaks,including the C—O stretching vibration absorption peak in the range of 1 033-1 052 cm-1 and the hydroxyl characteristic peak in the range of 3 394-3 412 cm-1.Moreover,varying degrees of differences were demonstrated in the FT?IR spectra,the relative absorption intensities and the second derivative spectra of those six broad?leaved wood species.For instances,in the range of 1 110-1 122 cm-1,only Phoebe zhennan showed a small absorption peak,Phoebe zhennan and Eucommia ulmoides would form a broad absorption peak in the range of 1 237-1 264 cm-1,certain differences existed in Eucommia ulmoides,Ormosia henryi and Magnolia officinalis in the range of 1 624-1 657 cm-1,and the Liquidambar and Camptotheca were distinct from the other 4 species in the range of 1 559-1 648 cm-1.In addition,the comparison of relative absorption intensity showed a relatively large difference between the two peak positions at A3 402/A1 510 and A1 661/A1 510.Furthermore,the second?order derivative spectrum of the infrared spectrum of the six tree species in the 1 000-1 800 cm-1 region was significantly different from the peak shape,the position of the absorption peak,and the number of peaks.The comparison and analysis of six common broad?leaved tree species could provide theoretical basis for rapid identification and classification of wood.

关 键 词：木材快速鉴定 阔叶树材 傅里叶红外光谱 二阶导数光谱 吸收峰 

分 类 号：S781.1[农业科学—木材科学与技术] S792[农业科学—林学]