Determination of adulterated gasoline using fluorescence emission-excitation matrices and multivariate calibration

Shutao Wang; Qi Cheng; Yuanyuan Yuan; Changbing Wang; Shuangna Ma

doi:10.1016/j.saa.2018.11.012

Determination of adulterated gasoline using fluorescence emission-excitation matrices and multivariate calibration

Spectrochim Acta A Mol Biomol Spectrosc. 2019 Mar 5:210:260-265. doi: 10.1016/j.saa.2018.11.012. Epub 2018 Nov 15.

Authors

Shutao Wang¹, Qi Cheng², Yuanyuan Yuan³, Changbing Wang³, Shuangna Ma³

Affiliations

¹ Measurement Technology and Instrumentation Key Lab of Hebei Province, Yanshan University, Qinhuangdao, Hebei 066004, China. Electronic address: wangshutao@ysu.edu.cn.
² Measurement Technology and Instrumentation Key Lab of Hebei Province, Yanshan University, Qinhuangdao, Hebei 066004, China. Electronic address: chengqi19880@163.com.
³ Measurement Technology and Instrumentation Key Lab of Hebei Province, Yanshan University, Qinhuangdao, Hebei 066004, China.

PMID: 30463039
DOI: 10.1016/j.saa.2018.11.012

Abstract

Methanol gasoline, known as a new energy, has a certain degree of damage to automobile. The aim of this work was to identify and quantify the methanol in methanol gasoline using three-dimensional fluorescence spectroscopy technique combined with second order chemometric methods. Parallel factor analysis (PARAFAC) and self-weighted alternating trilinear decomposition (SWATLD) methods were used to analyse artificial samples. However, the obtained results by PARAFAC were not satisfactory. On the other hand, excellent prediction results were obtained when SWATLD model was applied, with recovery rate between 98.7 and 102.8%, and between 97.4 and 101.9% for two and three factor respectively. In order to verify the accuracy of the method, four real samples were predicted using SWATLD model with RMSEP between 0.1 μg/mL and 0.23 μg/mL.

Keywords: Excitation-emission matrix fluorescence; Methanol gasoline; PARAFAC; SWATLD.