An electrochemiluminescent electrode for use in apparatus for monitoring {HEAD ~ the concentration} of {TAIL ~ organic materials} in water, comprising: 
An electrochemiluminescent electrode for use in apparatus for monitoring { HEAD ~ the concentration } of { TAIL ~ organic materials } in water , comprising :
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH