光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2015年
4期
929-933
,共5页
拉曼光谱%动植物油%光谱分析
拉曼光譜%動植物油%光譜分析
랍만광보%동식물유%광보분석
Raman spectroscopy%Animal and plant oil%Spectral analysis
利用拉曼光谱技术分别研究了植物油和动物脂肪油的光谱特性。通过自适应迭代惩罚最小二乘法的基线校正方法,对所测得的拉曼光谱进行了数据处理,获得了它们的微观信息。进而通过选取其中部分油的拉曼光谱,进行了植物油的光谱、动物脂肪油的光谱以及动物脂肪油和植物油之间的光谱比较和分析,从而发现了多种植物油光谱(包括多个频移范围内的频移大小以及强度大小)的差异,也发现了动物脂肪油与植物油的拉曼光谱间的差异。不但提供了辨识不同食用油的光谱依据,也证明了拉曼光谱是一种识别不同油品的有效方法。
利用拉曼光譜技術分彆研究瞭植物油和動物脂肪油的光譜特性。通過自適應迭代懲罰最小二乘法的基線校正方法,對所測得的拉曼光譜進行瞭數據處理,穫得瞭它們的微觀信息。進而通過選取其中部分油的拉曼光譜,進行瞭植物油的光譜、動物脂肪油的光譜以及動物脂肪油和植物油之間的光譜比較和分析,從而髮現瞭多種植物油光譜(包括多箇頻移範圍內的頻移大小以及彊度大小)的差異,也髮現瞭動物脂肪油與植物油的拉曼光譜間的差異。不但提供瞭辨識不同食用油的光譜依據,也證明瞭拉曼光譜是一種識彆不同油品的有效方法。
이용랍만광보기술분별연구료식물유화동물지방유적광보특성。통과자괄응질대징벌최소이승법적기선교정방법,대소측득적랍만광보진행료수거처리,획득료타문적미관신식。진이통과선취기중부분유적랍만광보,진행료식물유적광보、동물지방유적광보이급동물지방유화식물유지간적광보비교화분석,종이발현료다충식물유광보(포괄다개빈이범위내적빈이대소이급강도대소)적차이,야발현료동물지방유여식물유적랍만광보간적차이。불단제공료변식불동식용유적광보의거,야증명료랍만광보시일충식별불동유품적유효방법。
The spectral characteristics of different kinds of oil ,either from plant seeds or animal fat ,were studied with Raman spectroscopy .The experimental data were processed with the adaptive iteratively reweighted penalized least squares method to realize baseline correction ,and provide evident information about their microscopic world .The spectra were analyzed and com‐pared with each other in three parts :the Raman spectra comparison among different samples of plant oils ,the analysis of the ani‐mal fat and the comparison between plant oils and the animal fat .The differences among the oils were observed in the analysis , including Raman shift and Raman intensity differences .This study not only yields the spectral basis for distinguishing or recog‐nizing the different edible oils ,but also confirms that Raman spectroscopy is an effective tool for identifying different oils .