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中红外光谱检测不同浓度乙醇柴油性能指标

Determination of Performance of Different Concentration Ethanol Diesel Oil Based on Mid Infrared Spectroscopy

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摘要

利用中红外光谱和化学计量学实现了对乙醇柴油各项性能指标的定量分析。 实验样品96个, 为32种不同浓度的乙醇柴油溶液。 采用S-G平滑、 MSC、 微分处理(1stD和2ndD)、 SNV等四种方法对光谱数据进行预处理, 并结合八种波段筛选方法(UVE, CARS, SPA, RPLS, UVE-SPA, UVE-CARS, SPA-CARS, UVE-SPA-CARS)对乙醇柴油MIR光谱数据进行处理, 分别建立乙醇柴油密度、 粘度、 乙醇含量的PLSR模型, 得出以下主要结论: 综合比较八种变量筛选方法, 发现UVE-SPA-CARS-PLS对乙醇含量的建模效果最好, 模型预测集的Rp和RMSEP分别为0.978 1和0.825 5。 变量筛选较原始光谱建立的模型来说, 不仅模型输入数量减少, 预测效果也有所提高。

Abstract

The quantitative analysis of the performance indexes of ethanol diesel was carried out by means of medium infrared spectroscopy and chemometrics. There were 96 samples in 32 different concentrations of ethanol diesel oil solutions. Using S-G, MSC, smooth differential processing (1st D and 2nd D), SNV of methods preprocessed spectral data, combined with the screening method of eight kinds (UVE, CARS,SPA,RPLS,UVE-SPA,UVE-CARS,SPA-CARS,UVE-SPA-CARS)processing ethanol diesel MIR spectral data, and PLSR model were established respectively with density of ethanol diesel oil, viscosity and ethanol content. The results showed that: comparing the eight variables screening methods, we found that UVE-SPA-CARS-PLS has the best modeling effect on ethanol content. The correlation coefficient was 0.978 1 and the root mean square error of prediction was 0.825 5, respectively. Compared with the model established by the original spectrum, variable selection not only reduced the number of model inputs, but also improved the prediction effect.

Newport宣传-MKS新实验室计划
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中图分类号:O657.3

DOI:10.3964/j.issn.1000-0593(2018)09-2741-08

基金项目:国家自然科学基金项目(61640417), 国家“十二五”(863计划)课题(SS2012AA101306), 江西省优势科技创新团队建设计划项目(20153BCB24002), 南方山地果园智能化管理技术与装备协同创新中心(赣教高字[2014]60号), 江西省研究生创新资金项目(YC2015-S238)资助

收稿日期:2017-08-17

修改稿日期:2017-12-29

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刘燕德:华东交通大学机电与车辆工程学院, 江西 南昌 330013
叶灵玉:华东交通大学机电与车辆工程学院, 江西 南昌 330013
唐天义:华东交通大学机电与车辆工程学院, 江西 南昌 330013
欧阳爱国:华东交通大学机电与车辆工程学院, 江西 南昌 330013
孙旭东:华东交通大学机电与车辆工程学院, 江西 南昌 330013
张 宇:华东交通大学机电与车辆工程学院, 江西 南昌 330013

联系人作者:刘燕德(jxliuyd@163.com)

备注:刘燕德, 1967年生, 华东交通大学机电与车辆工程学院教授

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引用该论文

LIU Yan-de,YE Ling-yu,TANG Tian-yi,OUYANG Ai-guo,SUN Xu-dong,ZHANG Yu. Determination of Performance of Different Concentration Ethanol Diesel Oil Based on Mid Infrared Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2018, 38(9): 2741-2748

刘燕德,叶灵玉,唐天义,欧阳爱国,孙旭东,张 宇. 中红外光谱检测不同浓度乙醇柴油性能指标[J]. 光谱学与光谱分析, 2018, 38(9): 2741-2748

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