Photocatalytic Degradation-Excitation−Emission Matrix Fluorescence for Increasing the Selectivity of Polycyclic Aromatic Hydrocarbon Analyses

The application of photocatalysis enhancement to calibration of fluorescence excitation−emission matrixes (EEMs) with parallel factor (PARAFAC) analysis is described. In this study, three- and four-way PARAFAC analysis was employed to extract the fluorescent species' spectra from overlapping EE...

Full description

Saved in:
Bibliographic Details
Published in:Analytical chemistry (Washington) 2005-12, Vol.77 (23), p.7679-7686
Main Authors: Kim, Yoon-Chang, Jordan, James A, Nahorniak, Michelle L, Booksh, Karl S
Format: Article
Language:English
Subjects:
Analytical chemistry
Catalysis
Chemistry
Exact sciences and technology
Fluorescence
Photochemistry
Polycyclic aromatic hydrocarbons
Polycyclic Aromatic Hydrocarbons - analysis
Polycyclic Aromatic Hydrocarbons - chemistry
Spectrometric and optical methods
Spectrometry, Fluorescence - instrumentation
Spectrometry, Fluorescence - methods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The application of photocatalysis enhancement to calibration of fluorescence excitation−emission matrixes (EEMs) with parallel factor (PARAFAC) analysis is described. In this study, three- and four-way PARAFAC analysis was employed to extract the fluorescent species' spectra from overlapping EEMs. Time-dependent photocatalysis degradation of the polycyclic aromatic hydrocarbons (PAHs) was employed to create an additional dimension for analysis. The consequent four-dimension degradation−EEM data cubes have greater selectivity for each PAH than do three-dimension EEM data cubes alone. On a scale of 0 to 1, with 0 being completely collinear spectra and 1 being orthogonal spectra, including the time-dependent measurements increased the selectivity an average of 21%, from 0.73 to 0.87.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac0509051