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Abstract
A method is proposed for the determination of phenol in river and waste water using electrochemical detection HPLC. An octadecyl silica solumn was used with a gradient of methanol in water from 40 % to 100 %. With preconcentration unit (guard C 18 column) on line and ampermetric detection (+1.1 V), detect-ability limit at 30 ppt was achieved. The method has been applied for the control of the performance of the purification plant.