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This work was aimed at highlighting the potentialities of the reagent generation by ultrasonic irradiation to produce chloride and hypochlorite solutions for analytical purposes derived from the residues of organochlorines of laboratory effluents. The dependence between the production of chloride obtained from the sonication of effluents containing organochlorines and the irradiation time was evaluated for CCl4, CHCl3, CH2Cl2 and Thiamethoxam®. It was observed that under saturation conditions the production of chloride was highest for CHCl3. Additionally, good precision related to the sonochemical generation of chloride was achieved (RSD < 10%). The extent of sonochemical generation of hypochlorite was also evaluated in the presence of different NaOH concentrations. The hypochlorite generated by the degradation of CCl4 residues was monitored by the reference Berthelot method for NH4+ determination. The results obtained with hypochlorite solution sonochemically generated for different NH4+ concentration were compared with the conventional reagent and no significant difference (95% confidence level) was found.

Production of chloride and hypochlorite for analytical purposes by sonochemical degradation of organochlorines