NDLI: Quantification of BTEX compounds in model effluent systems using flow injection diode-array spectrophotometry and multivariate calibration

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Quantification of BTEX compounds in model effluent systems using flow injection diode-array spectrophotometry and multivariate calibration

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Journals Bulletin ( Analytical Proceedings including Analytical Communications Vol - 32 Issue - 12 )

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Quantification of BTEX compounds in model effluent systems using flow injection diode-array spectrophotometry and multivariate calibration

Content Provider	Royal Society of Chemistry (RSC)
Author	Andrew, Kevin N. Worsfold, Paul J.
Copyright Year	1995
Abstract	The potential of applying flow injection (FI) analysis in combination with diode-array spectrophotometry (in the range 200–300 nm) and multivariate calibration to the on-line analysis of BTEX compounds in effluents has been investigated, using synthetic mixtures of toluene, ethylbenzene and o-xylene in aqueous solution (0–20 mg 1–1). Absorbance and first- and second-derivative spectral data have been modelled using stepwise multiple linear regression (SMLR), principal components regression (PCR) and partial least-squares regression (PLS1). Predictions of individual analyte concentrations in test samples produced prediction errors ranging from 8.5% for o-xylene to 45.8% for toluene. The lowest prediction errors (7.0%) were produced when calibrating the three compounds as a single component (‘total TEX’). In order to analyse industrial effluents, an FI manifold incorporating a solvent extraction cell was used to reduce matrix interferences. This method was successfully used for the analysis of both aqueous standards and solutions of a real effluent spiked with o-xylene. In each case, hexane was used to extract o-xylene from the aqueous matrix.
Starting Page	507
Ending Page	510
Page Count	4
File Format	PDF
ISSN	0144557X
Volume Number	32
Issue Number	12
Journal	Analytical Proceedings including Analytical Communications
DOI	10.1039/AI9953200507
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Analyte Linear regression Toluene BTX (chemistry) Nonlinear dimensionality reduction Polymerase chain reaction Fimbrin Absorbance Ethylbenzene O-Xylene Positive-definite matrix Hexane Spectrophotometry Liquid\u2013liquid extraction
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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