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基于FTIR的在用润滑油燃油污染的定量检测
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    摘要:

    为定量、快速检测在用油的燃油污染程度,通过定量加入法配制一定燃油浓度梯度的润滑油样品,建立燃油浓度和804~759 cm-1谱区峰面积的标准曲线,线性相关性达0.987 7,此曲线可用于在用润滑油燃油污染的定量分析。对配制的样品和在用油样品的红外光谱进行Savitzky Golay多项式法平滑和一阶导数处理,采用偏最小二乘法(PLS)建立润滑油中燃油污染的红外光谱定量分析模型。模型校正偏差为0.144,相关系数达到0.986,预测集的标准偏差为0.161,具有很好的精密度和准确性,可用于在用油燃油稀释污染的快速定量检测分析。

    Abstract:

    To monitor the fuel content in the used oil quantitatively and rapidly,a serial of lubricating oil samples with different fuel content were made up through gravimetric method,and a standard curve of fuel content with correlation coefficient of 0.987 7 was established based on the FTIR peak area of 804~759 cm-1,which can be used for the quantitative analysis of the fuel content of used lubricating oil.In order to achieve the rapid monitor of fuel content,a calibration model was built with partial least square method (PLS) after pretreating the Fourier transformation infrared spectrometry of prepared oil samples and used ones by Savitzky Golay smoothing and the first derivative.The standard error of calibration model is0.144,the correlation coefficient is 0.986,and the standard error of prediction set is 0.161,indicating that the model has high precision and accuracy can be used to monitor the fuel contaminant of oil rapidly.

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王菊香,邢志娜,韩 晓,申 刚.基于FTIR的在用润滑油燃油污染的定量检测[J].润滑与密封,2014,39(8):77-80.
.[J]. Lubrication Engineering,2014,39(8):77-80.

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  • 在线发布日期: 2014-11-25
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