Journal
MICROCHEMICAL JOURNAL
Volume 99, Issue 2, Pages 278-282Publisher
ELSEVIER
DOI: 10.1016/j.microc.2011.05.017
Keywords
Molecular imprinting; Fluorescence optosensor; Xylenes; Flow analysis; Screening test; Water analysis
Categories
Funding
- Spanish Ministry of Education and Science [CTQ2008-01394]
- Regional Government of Andalusia [P07-FQM-2738, P07-FQM-2625]
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We describe a rapid, sensitive, fluorescent screening test for xylenes in water samples that avoids more costly time-consuming methods. The screening test is based on a molecularly imprinted polymer and it runs without the need for any pre-concentration step, thus rendering it suitable for routine use in water-quality-control laboratories. The test recognizes contaminated samples rapidly (50 s) and inexpensively with a cut-off level of 10 mu g mL(-1), which is the value that the International Organization has laid down in its assessment of the water quality for human consumption. The reliability of the screening test was 23% false positives and 0% false negatives in 30 samples. The applicability was confirmed by analyzing mineral, tap and river water samples. (C) 2011 Elsevier B.V. All rights reserved.
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