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