松香及其改性产品的红外光谱法快速鉴别

Fast identification of rosin and its modified products by FT-IR

由于松香、马来松香、聚合松香、歧化松香和氢化松香及其酯等松香深加工产品外观相似,很难凭感官鉴别,给执法部门的监管和企业产品的质量控制造成很大困难。本文通过选用不同松香深加工产品作为研究对象,分类别比较其傅里叶红外光谱和二阶导数红外光谱,对其进行快速鉴别。研究表明:利用红外光谱和二阶导数红外光谱特征吸收峰的位置和吸收强度等差异信息可将它们快速准确鉴别。

For the appearances of rosin,maleic rosin,polymerized rosin,disproportionated rosin,hydrogenated rosin and their esters are similar,it is difficult to identify them by sense organs,which caused great difficulties for the supervision of law enforcement de-partments and the quality control of rosin products.In this paper,different rosin deep-processing products were selected for infrared spectra and second-derivative infrared spectra analysis to identify them rapidly.The results show that they can be quickly and accu-rately identified through the difference between the position and the absorption intensity of the characteristic absorption peaks of in-frared spectra and second derivative infrared spectra.