Determinatin of nickel and vanadium in residue oil by laser-induced breakdown spectroscopy combined with partial least squares
LIU Liang1, YAN Chunhua1, LI Maogang1, ZHANG Tianlong2, TANG Hongsheng2, LI Hua*1,2
1. College of Chemistry and Chemical Engineering,Xi'an Shiyou University,Xi'an 710065,China; 2. Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science,Northwest University,Xi'an 710127,China
Abstract：The rapid analysis of metal elements in residue oil is of great significance for the product quality of residue oil and the efficiency of refining process.Different residue oil samples were obtained from a refinery,calcined and ground into powder,and mixed according to different mass ratios to obtain residue oil samples.In this study,the laser-induced breakdown spectroscopy(LIBS) was combined with chemometrics to establish a rapid quantitative method for the analysis of nickel(Ni) and vanadium(V) in residue oil.Firstly,the partial least squares(PLS) model for the quantitative analysis of Ni and V in residue oil was constructed based on the LIBS spectra of 20 different samples.Secondly,the effects of different preprocessing and variable selection methods on the prediction performance of PLS calibration model were investigated.The results showed that for Ni and V in residue oil,the PLS model based on first derivative-multiplicative scatter correction and synergetic interval PLS(D1st-MSC-siPLS) and PLS model based on second derivative-multiplicative scatter correction and synergetic interval PLS(D2nd-MSC-siPLS) had the optimal prediction results.The optimal determination coefficients (R2p) were 0.986 4 and 0.981 2, and root mean square errors(RMSEp) were 1.440 2 and 0.588 8 mg/kg,and the mean relative errors (MREp) were 3.89% and 1.85%,respectively.Therefore,the combination of LIBS technique with PLS algorithm could provide a feasible method for the quantitative analysis of Ni and V elements in reside oil.
刘良, 闫春华, 李茂刚, 张天龙, 汤宏胜, 李华. 激光诱导击穿光谱结合偏最小二乘测定渣油中镍钒[J]. 冶金分析, 2024, 44(10): 87-94.
LIU Liang, YAN Chunhua, LI Maogang, ZHANG Tianlong, TANG Hongsheng, LI Hua. Determinatin of nickel and vanadium in residue oil by laser-induced breakdown spectroscopy combined with partial least squares. , 2024, 44(10): 87-94.
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