Fluorescence Determination of the Pesticide Asulam by Flow Injection Analysis

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Abstract

This paper presents the analytical determination of the pesticide Asulam based on its native fluorescence. The method was optimized in either a flow injection analysis (FIA) assembly or in batch. The maximum fluorescence intensity was observed for basic pH solutions and at a λex of 258 nm and a λem of 342 nm. The influence of different empirical parameters, such as the pH, the presence of surfactants, solvent polarity or solved oxygen amount, was studied. The calibration range was fitted with a linear equation from 0.01 - 3 mg l-1 Asulam and 0.005 - 15 mg l-1 Asulam for batch and continuous-flow, respectively. The RSD for both procedures was 1.0%. After testing the influence of a large series of potential interferents, the method was applied to water samples from different locations.

Journal

  • Analytical Sciences

    Analytical Sciences 22 (1), 21-24, 2006

    The Japan Society for Analytical Chemistry

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