Four-way data coupled to parallel factor model applied to environmental analysis: Determination of 2,3,7,8-tetrachloro-dibenzo-para-dioxin in highly contaminated waters by solid-liquid extraction laser-excited time-resolved Shpol'skii spectroscopy

    Authors

    H. C. Goicoechea; S. J. Yu; A. C. Olivieri;A. D. Campiglia

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Anal. Chem.

    Keywords

    POLYCYCLIC AROMATIC-HYDROCARBONS; ROOM-TEMPERATURE PHOSPHORIMETRY; FLUORESCENCE LIFETIME DETECTION; DIBENZO-P-DIOXINS; POLYCHLORINATED; DIBENZOFURANS; CHEMOMETRIC ANALYSIS; 2ND-ORDER ADVANTAGE; FIBEROPTIC; PROBE; HUMAN SERUM; SPECTROMETRY; Chemistry, Analytical

    Abstract

    This article reports the first application of parallel factor analysis to high-order instrumental data generated from Shpol'skii matrixes at liquid helium temperature. Third-order data arrays-consisting of excitation modulated wavelength time matrixes-are collected with the aid of a cryogenic fiber-optic probe, a tunable dye laser, and a multichannel system for phosphorescence detection. The multidimensional data formats are applied to the analysis of 2,3,7,8-tetrachloro-dibenzo-para-dioxin in water samples. The experimental procedure is rapid and environmentally friendly. Complete sample analysis is accomplished in less than 15 min with only 100 mu mu L of organic solvent (n-heptane). The feasibility to directly determine parts-per-trillion concentration levels of the target compound is demonstrated with heavily contaminated samples of unknown composition. The limits of detection, estimated from calibrations based on the univariate method and parallel factor analysis, are 0.060 and 0.092 ng(.)mL(-1), respectively; both referred to a 100 mL water sample.

    Journal Title

    Analytical Chemistry

    Volume

    77

    Issue/Number

    8

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    2608

    Last Page

    2616

    WOS Identifier

    WOS:000228605100043

    ISSN

    0003-2700

    Share

    COinS