CAJ | 학술논문

测定了不同来源、不同工艺的润滑油基础油近红外谱图，以偏最小二乘方法为数学工具，通过硅胶吸附法取得基础数据，建立基础油的近红外光谱－化学族组成模型。采用该模型测定未知样品与硅胶吸附法的测定结果相比，饱和烃质量分数和芳烃质量分数相关系数分别为 0.9877和0.9875。对子分析结果表明，两种分析方法的测定结果一致。近红外分析方法重现性好，分析速度快，结果准确，且不消耗有机溶剂。
측정료불동래원、불동공예적윤활유기출유근홍외보도，이편최소이승방법위수학공구，통과규효흡부법취득기출수거，건립기출유적근홍외광보－화학족조성모형。채용해모형측정 미지양품여규효흡부법적측정결과상비，포화경질량분수화방경질량분수상관계수분별위 0.9877화0.9875。대자분석결과표명，량충분석방법적측정결과일치。근홍외 분석방법중현성호，분석속도쾌，결과준학，차불소모유궤용제。
A new analytical method of determining the chemical composition of lube base oil s was developed，based on FT－NIR spectros copy in the 1620～1920 nm region．NIR spec tra of lube base oils of different origi n and processing schemes were recorded．Partial least squares（PLS） technique was? applied to construct the mathematical models，which correlated the NIR spectral f eatures with the chemical composition an alyzed by silica gel absorbent column．Fo ur factors were used．Twenty－one unknown? samples were tested by NIR method and the conventional method．The correlation coefficients of the results tested by the? two methods were 0.9877 and 0.9875，for saturates content and aromatics content，respectively．The validity of the develope d method was proved by pairedt test．T he? NIR method，with its advantages of better repeatability，shorter time of testing，simpler operation and without need of so lvent，can be used as an alternative for? determining the chemical composition of? lube base oils．