Fluorimetric Determination of Non-Fluorescent Dinitroaniline Derivative Herbicides, Using the Photoreduction of Anthraquinone - 2, 6-Disulfonate
- 1 December 1987
- journal article
- research article
- Published by Taylor & Francis in Analytical Letters
- Vol. 20 (12), 1995-2009
- https://doi.org/10.1080/00032718708078040
Abstract
A photoreduction - fluorescence technique has been developed for the quantitative analysis of several dinitroaniline derivative herbicides. The photoreduction of anthraquinone - 2.6 - disulfonate by dinitroanilines generates highly fluorescent dihydroxyanthracene-2,6disulfonate, in a 20 : 80 vol/vol acetonitrile-water mixture at room temperature. Optimal irradiation times for obtaining a convenient, sensitized fluorescence signal are relatively short, ranging between 2 and 4 min. Linear log-log calibration curves are established over several orders of magnitude in concentration units. The limits of detection range between 0.3 and 4.2 pg m1−l. The photoreduction-fluorescence technique is shown to be very convenient, sensitive, and precise for the quantitation of dinitroaniline herbicides.Keywords
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