©2020 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2020 Biological and Chemical Oceanography Data Management Office.Zhang J., Ortner P. B., Fischer C. J. (1997). Determination of Nitrate and Nitrite in Estuarine and Coastal Waters by Gas Segmented Continuous Flow Colorimetric Analysis. National Exposure Research Laboratory Office of Research and Development US Environmental Protection Agency Cincinatti. Method 353.4. URL: https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100PDOG.txt