Monitoring the quality of rivers and lakes is becoming more and more important as enviornmental concerns increase. A good
dissolved oxygen transmitter used properly is one of the important tools to use in this regard. You may want to look at http://www.ecy.wa.gov/programs/wq/plants/management/joysmanual/4oxygen.html for some useful techniques.
The following papers have been found based on your search criteria. Please select a paper from the list below to find out more information about this paper and to read an abstract if one has been made available.
Use of the fish enzyme system in monitoring water quality: effects of mercury on tissue enzymes
