Variable Definition: 
Nitrogen, total dissolved; Total dissolved nitrogen
Variable Description: 

total dissolved nitrogen
detection limit 0.1
(prior to 1998 by persulfate oxidation and automated colorimetric analysis; after 1998 by high temperature catalytic oxidation with chemiluminescent detection) in mg N/L

Unit: 
parts per million; Concentration ppm
Value Type: 
Average
Data Type: 
real
Attribute or Value: 
Variable
Data Sets using this Variable: