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Degradation of Oil- and Water-Soluble Fluorescent Dyes

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1008369.(doi:10.13031/2013.29615)
Authors:   Lav R Khot, Masoud Salyani, Roy D Sweeb
Keywords:   spray deposit photodegradation, spray droplet, Yellow 131SC dye, Pyranine 10G, fluorometry

The assessment of spray deposit efficiency is an important aspect in pesticide application technology research. Since fluorescent tracer dyes serve as useful markers for evaluating spray deposits in many spray application investigations, it is necessary to study the stability and degradation of the fluorescent deposits during storage and exposure to solar radiation before using them under field conditions. Therefore, this study was carried out to evaluate the degradation characteristics of spray deposits prepared with two fluorescent dyes (oil-soluble Yellow 131SC, and water-soluble Pyranine 10G), due to the solar radiation and duration of sample storage.

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