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Determination of three polycyclic aromatic hydrocarbons in tea using four-way fluorescence data coupled with third-order calibration method.
- Source :
-
Microchemical Journal . May2019, Vol. 146, p957-964. 8p. - Publication Year :
- 2019
-
Abstract
- Abstract The content of polycyclic aromatic hydrocarbons (PAHs) in tea has attracted widespread attention. In this study, the strategy of four-way fluorescence data coupled with third-order calibration method based on four way parallel factor analysis (four-way PARAFAC) was used to determine phenanthrene, naphthalene and acenaphthene in tea. A new method, introducing an additional temperature mode into the three-way fluorescence data set, was proposed to acquire a four-way data array. The feasibility of the method was validated by experiments. The four-way PARAFAC could give satisfactory analytical results for the determination of three PAHs in tea. The average spiked recoveries were (100.9 ± 7.8)% for phenanthrene, (94.6 ± 8.6)% for naphthalene, (96.0 ± 9.8)% for acenaphthene. The root-mean-square error of prediction (RMSEP) values were 0.495 μg L−1 for phenanthrene, 0.841 μg L−1 for naphthalene, 0.577 μg L−1 for acenaphthene. The average relative predictive errors (ARPE) values for three PAHs were <2.35%. The limits of detection (LOD) of three PAHs were between 0.026 and 0.14 μg L−1. Generally, these results obtained by four-way PARAFAC were better than that of three-way PARAFAC. In addition, analytical figures of merit, such as Sensitivity, Selectivity and Analytical sensitivity, were calculated for three PAHs to evaluate the methods. The results demonstrated that the four-way PARAFAC was more suitable for the determination for three target analytes in this study. Highlights • Determination of three PAHs using EEM fluorescence spectroscopy combined with multiway calibration methods. • Introducing a temperature mode to construct the four-way fluorescence data array. • Green analytical chemistry. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHENANTHRENE
*POLYCYCLIC aromatic hydrocarbons
*FLUORESCENCE
Subjects
Details
- Language :
- English
- ISSN :
- 0026265X
- Volume :
- 146
- Database :
- Academic Search Index
- Journal :
- Microchemical Journal
- Publication Type :
- Academic Journal
- Accession number :
- 135227887
- Full Text :
- https://doi.org/10.1016/j.microc.2019.02.016