Microchemical Journal, cilt.205, 2024 (SCI-Expanded)
Chlorothalonil and dichlofluanid are antifouling paint booster biocides used to protect ship and boat hulls from biofouling. In this study target compounds were determined by a fast, easy and highly sensitive first derivative synchronous spectrofluorimetric approach. The first derivative amplitudes of chlorothanolil and diclofluonid were found at 358 nm (zero-crossing point of diclofluonid) and at 682 nm (zero-crossing point of chlorothanolil). The proposed method linearity was provided in the range of 0.25 μg/mL to 7.50 μg/mL for chlorothanolil and from 1.00 μg/mL to 7.50 μg/mL for diclofluonid. The limits of detection were determined to be 0.04 μg/mL and 0.23 μg/mL and the limits of quantification were 0.12 μg/mL to 0.69 μg/mL for chlorothalonil and diclofluonid, respectively. The method was successfully applied for the determination of the target compounds in synthetic and real seawater. The recoveries of chlorothalonil and diclofluonide were 86.78 % and 97.40 % in synthetic seawater and 90.91 % and 76.50 % in real seawater, respectively. The proposed method results obtained for synthetic seawater and real seawater were simultaneously compared with the analysis results of these samples using the GC–MS method. The greenness of the proposed method was assessed using the analytical eco-scale, green analytical procedure index (GAPI), and AGREE assessment method. The proposed method was found to be superior to the compared GC–MS method in terms of metrics of greenness aspects. This study will be the first scientific proof of the determination of antifouling paint booster biocides in seawater by the first Derivative Synchronous spectrofluorometry method.