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