常见木制首饰的红外光谱研究

A Study of Infrared Spectroscopy of Common Wooden Jewelry

采用常规无损检测手段区分出种属差异较大的木制首饰,但最多只能鉴别到属。选取10种常见木制首饰的红外光谱中,红外特征峰强度、峰位以及类型出现了一定的差异。对相近种属木材进行傅里叶变换红外光谱FTIR(一维红外光谱)、SDIR(二阶导数红外光谱)分析,FTIR谱图中,可通过是否出现草酸钙的特征峰区分檀香紫檀与卢氏黑黄檀、降香黄檀与交趾黄檀;SDIR谱图中,檀香紫檀为1 620 cm(-1)单峰,而卢氏黑黄檀分裂为1 601 cm(-1)和1 627 cm(-1)双峰。在SDIR谱图中,降香黄檀存在1 183 cm^(-1)峰位,而交趾黄檀未出现该峰。

Conventional nondestructive testing is used to distinguish wooden jewelry with large differences in species,but it can only identify the genus at most.In the infrared spectroscopy of selected ten kinds of common wooden jewelry,there were certain differences in the intensity,position and type of infrared characteristic peaks.FTIR(onedimensional infrared spectroscopy) and SDIR(second-derivative infrared spectroscopy) were used to analyze wood of similar species.In the FTIR spectrum,we could distinguish Pterocarpus santalinus from Dalbergia louvelii,and Dalbergia odorifera from Dalbergia cochinchinensis Pierre by the presence or absence of characteristic peaks of calcium oxalate.In the SDIR spectrum,Pterocarpus santalinus had a single peak of 1 620 cm-1,Dalbergia louvelii split into two peaks of 1 601cm-1 and 1 627 cm-1,Dalbergia odorifera had a peak position of 1 183 cm-1,but Dalbergia interdigita did not appear this peak.