A b s t r a C T
In thisworktheelectrochemicalbehaviorofsubstancesofenvironmentalconcern [bentazone atrazine
carbamazepine,,,, Phenytoinanditsmetabolite5 - (4-hydroxyphenyl) - 5-phenylhydantoin HPPH], ona
glassy. Carbonworkingelectrode (Ag / AgClreferenceelectrode) wasstudiedwiththeaimtodevelopa
HPLC. Methodcoupledwithamperometricdetection.Constantpotential (DC), pulsedamperometric
detection modeswerestudied.Forthepulsedmode, the severalwaveformsweresetandinvestigated.
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