Fluorescence Spectra of Aromatic Hydrocarbons Based on Alternating Trilinear Decomposition

2018 ◽  
Vol 55 (9) ◽  
pp. 093001
Author(s):  
王玉田 Wang Yutian ◽  
刘凌妃 Liu Lingfei ◽  
王书涛 Wang Shutao ◽  
张正帅 Zhang Zhengshuai
Keyword(s):  
Aromatic Hydrocarbons ◽  
Fluorescence Spectra ◽  
Trilinear Decomposition ◽  
Alternating Trilinear Decomposition

scholarly journals Application of alternating trilinear decomposition-assisted multivariate curve resolution to gas chromatography-mass spectrometric data for the quantification of polycyclic aromatic hydrocarbons in aerosols

2021 ◽  
Vol 8 (8) ◽  
pp. 210458
Author(s):  
Xiangdong Qing ◽  
Xiaohong Zhou ◽  
Ling Xu ◽  
Jin Zhang ◽  
Yi Huang ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Aromatic Hydrocarbons ◽  
Mass Spectrometric ◽  
Multivariate Curve Resolution ◽  
Curve Resolution ◽  
Trilinear Decomposition ◽  
External Standard Method ◽  
External Standard ◽  
Polycyclic Aromatic ◽  
Alternating Trilinear Decomposition

For the first time, alternating trilinear decomposition-assisted multivariate curve resolution (ATLD-MCR) was applied to analyse complex gas chromatography–mass spectrometric (GC-MS) data with severe baseline drifts, serious co-elution peaks and slight retention time shifts for the simultaneous identification and quantification of polycyclic aromatic hydrocarbons (PAHs) in aerosols. It was also compared with the classic multivariate curve resolution-alternating least-squares (MCR-ALS) and the GC-MS-based external standard method. In validation samples, average recoveries of five PAHs were within the range from (96.2 ± 6.8)% to (106.5 ± 4.1)% for ATLD-MCR, near to the results of MCR-ALS ((98.0 ± 1.5)% to (106.7 ± 4.3)%). In aerosol samples, the concentrations of pyrene provided by ATLD-MCR were not significantly different from those of MCR-ALS. The other four PAHs including chrysene, benzo[a]anthracene, fluoranthene and benzo[b]fluoranthene were not detected by ATLD-MCR and the GC-MS-based external standard method. The results of figures of merit further demonstrated that ATLD-MCR achieved high sensitivities (8.9 × 10 4 to 1.7 × 10 6 mAU ml µg −1 ) and low limits of detection (0.003 to 0.087 µg ml −1 ), which were better than or similar to MCR-ALS, presenting a great choice to deal with complex GC-MS data for the simultaneous determination of targeted PAHs in aerosols.

scholarly journals Detection of Water Contamination Events Using Fluorescence Spectroscopy and Alternating Trilinear Decomposition Algorithm

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Jie Yu ◽  
Xiaoyan Zhang ◽  
Dibo Hou ◽  
Fang Chen ◽  
Tingting Mao ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Contamination ◽  
Fluorescence Spectra ◽  
Interpolation Method ◽  
Three Dimensional ◽  
Trilinear Decomposition ◽  
Residual Matrix ◽  
Uv Vision ◽  
Alternating Trilinear Decomposition ◽  
Contamination Events

The method based on conventional index and UV-vision has been widely applied in the field of water quality abnormality detection. This paper presents a qualitative analysis approach to detect the water contamination events with unknown pollutants. Fluorescence spectra were used as water quality monitoring tools, and the detection method of unknown contaminants in water based on alternating trilinear decomposition (ATLD) is proposed to analyze the excitation and emission spectra of the samples. The Delaunay triangulation interpolation method was used to make the pretreatment of three-dimensional fluorescence spectra data, in order to estimate the effect of Rayleigh and Raman scattering; ATLD model was applied to establish the model of normal water sample, and the residual matrix was obtained by subtracting the measured matrix from the model matrix; the residual sum of squares obtained from the residual matrix and threshold was used to make qualitative discrimination of test samples and distinguish drinking water samples and organic pollutant samples. The results of the study indicate that ATLD modeling with three-dimensional fluorescence spectra can provide a tool for detecting unknown organic pollutants in water qualitatively. The method based on fluorescence spectra can be complementary to the method based on conventional index and UV-vision.

Rapid determination of sulfamethoxazole and trimethoprim illegally added into health products using excitation-emission matrix fluorescence coupled with second-order calibration method

2021 ◽  
Author(s):  
Lu-Zhu Chen ◽  
Hai-Long Wu ◽  
WanJun Long ◽  
Tong Wang ◽  
Gao-Yan Tong ◽  
...  
Keyword(s):  
Analytical Method ◽  
Rapid Determination ◽  
Calibration Method ◽  
Trilinear Decomposition ◽  
Excitation Emission Matrix ◽  
Health Products ◽  
Alternating Trilinear Decomposition ◽  
Second Order Calibration ◽  
Eem Fluorescence

In this work, a simple and fast analytical method based on self-weighted alternating trilinear decomposition (SWATLD) algorithm coupled with excitation-emission matrix (EEM) fluorescence was developed for the simultaneous determination of...

scholarly journals Absorption and Laser Induced Fluorescence Spectroscopy of Neutral Polycyclic Aromatic Hydrocarbons in Argon matrices

2015 ◽  
Vol 11 (A29A) ◽  
Author(s):  
Salma Bejaoui ◽  
Farid Salama ◽  
Ella Sciamma-O'Brien
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Fluorescence Spectra ◽  
Laser Induced Fluorescence ◽  
Broad Emission Band ◽  
Band Emission ◽  
Polycyclic Aromatic ◽  
Argon Matrices ◽  
Extended Red Emission ◽  
Solid Argon

Polycyclic aromatic hydrocarbons (PAHs) are considered as plausible carriers for the extended red emission (ERE), a photoluminescent process associated with a wide variety of interstellar environments, as well as for broad emission band features seen in cometary spectra. We report the absorption spectra of phenanthrene, anthracene, fluoranthene, pentacene, pyrene, chrysene and triphenylene isolated at 10 K in solid argon matrices together with laser induced fluorescence (LIF) spectra at 355 nm of matrix-isolated anthracene and fluoranthene. LIF spectra are compared with the UV/blue fluorescence spectra of the Red Rectangle Nebula (RR). The LIF spectra measured in solid Ar matrices have been shifted to the predicted position of the PAH band emission in the gas phase for comparison with the astronomical observations (Fig. 1).

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