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Nutrient methods.
(California Cooperative Oceanic Fisheries Investigation, La Jolla, CA, 2015)
The phytoplankton macro nutrients nitrate, nitrite, silicate, and phosphate in seawater are analyzed using colorimetric assays. Ammonium concentrations are determined using a fluorometric assay.
ISUS Nitrate sensor.
(California Cooperative Oceanic Fisheries Investigation, La Jolla, CA, 2015)
Since November 2004, a Satlantic ISUS nitrate sensor has been integrated with a Seabird 911+ CTD-Rosette system deployed on CalCOFI cruises. Cruises typically occupy 75 stations, collecting approximately 1400 discrete ...
ISUS Nitrate history.
(California Cooperative Oceanic Fisheries Investigation, La Jolla, CA, 2017)
The original methods description was written Feb 2010 by J. Wilkinson. Changes to the method or instrument are listed below.