Anodic　oxidation　capacities　of　graphite　and　platinum　(Pt)　electrodes　were　investigated　for　the　degradation　of　the　herbicide　atrazine　in　synthetic　aqueous　medium.　The　electro-oxidation　of　atrazine　under　various　supporting　electrolytes　and　applied　currents　was　conducted　in　an　undivided　reactor　with　different　electrode　materials.　The　electrochemical　behavior　between　anode　material　and　supporting　electrolyte　was　investigated　by　means　of　cyclic　voltammetry.　Graphite　anode　exhibited　good　oxidation　capacity　for　degradation　of　10mgL(-1)　atrazine　in　near-neutral　pH　condition,　achieving　over　90%　removal　efficiency　in　all　cases　within　60min.　Atrazine　removal　efficiency　of　100%　was　obtained　with　graphite　anode　in　60min　of　reaction　time　at　applied　current　60mA,　NaCl　concentration　0.05molL(-1),　and　initial　pH6.8;　nevertheless,　less　than　60%　of　removal　was　achieved　with　Pt　anode　under　the　same　conditions.　Five　times　consecutive　runs　demonstrated　that　the　atrazine　removal　efficiency　was　obviously　increased　with　the　positive　polarized　graphite　anode.　Positive　polarization　of　graphite　anode　during　anodic　oxidation　process　functionalizes　the　surface,　generating　oxygen-containing　functional　groups;　these　functional　groups　played　a　catalytic　role　during　the　oxidation　of　substrates.　An　oxidation　pathway　was　proposed　in　which　atrazine　was　virtually　destroyed　by　chemisorbed　reactive　oxygen　at　the　graphite　anode.