©2020 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2020 Biological and Chemical Oceanography Data Management Office.A fully automated Segmented Flow Analysis (SFA) system, ideal for water and seawater analysis. It comprises a modular system which integrates an autosampler, peristaltic pump, chemistry manifold and detector. The sample and reagents are pumped continuously through the chemistry manifold, and air bubbles are introduced at regular intervals forming reaction segments which are mixed using glass coils. The AA3 uses segmented flow analysis principles to reduce inter-sample dispersion, and can analyse up to 100 samples per hour using stable LED light sources.
| Dataset Name | PI-Supplied Description | PI-Supplied Name |
|---|---|---|
| Alkalinity and dissolved inorganic carbon (DIC) from sea water samples collected at coral reefs from equatorial central Pacific in 1973, 2012, 2015, and 2018 | Some water samples were also analyzed to determine nitrate, ammonium, phosphate, and silicate concentrations at the Woods Hole Oceanographic Institution Nutrient Analytical Facility (https://web.whoi.edu/nutrient/) using a four channel segmented flow AA3 HR Autoanalyzer. | Four channel segmented flow AA3 HR Autoanalyzer |
| Seawater biogeochemistry inshore and offshore the Bermuda coral reef from the Bermuda coral reef platform and adjacent Sargasso Sea extending to Bermuda Atlantic Time Series-station from 2014-2018 | SEAL AutoAnalyzer III for inorganic nutrients. | SEAL AutoAnalyzer III |
| Bottle data from R/V Endeavor cruise EN665 in the Gulf of Maine, conducted April 7-12, 2021 | Nutrients were determined at the WHOI Nutrient Analytical Facility on a SEAL Analytical AA3 HR following established procedures. | SEAL Analytical AA3 HR |
| Carbonate chemistry analyses (total alkalinity, DIC, and d13C of DIC) from discrete bottle samples and CTD data from 12 stations sampled during R/V Endeavor cruise EN669 in the Gulf of Maine during August 2021 | Nutrients were determined at the WHOI Nutrient Analytical Facility on a SEAL Analytical AA3 HR following established procedures. | SEAL Analytical AA3 HR |
| Hydrography, nutrients, and nitrogen uptake rates from SPIROPA cruise TN368 in July 2019 | Samples to determine nitrate, phosphate, and silicate concentrations were filtered (0.4 μm, polycarbonate) directly from Niskin bottles into acid‐washed polyethylene bottles and stored frozen until analysis via standard colorimetric methods at the WHOI Nutrient Analytical Facility using a SEAL Analytical AA3 HR discrete chemistry analyzer. | SEAL Analytical AA3 HR discrete chemistry analyzer |
| Nutrient and chlorophyll analyses from surface samples collected underway on board container ships during basin-wide transects of the North Pacific Ocean from Hong Kong to Long Beach, CA from 2009-2012 | Seal Analytical AA3 | |
| Carbon export from San Dieguito Lagoon from samples for seawater carbonate biogeochemistry between April 2014 and January 2015 | Nutrient samples were taken according to best practices and were filtered using a 0.4 µm filter and immediately frozen until analysis. Samples were analyzed using US Environmental Protection Agency methods for ammonium (method G-171-96, detection limit 0.034 µmol/L), nitrite+nitrate (method G-172-96, detection limit 0.010 µmol/L), silicate (method G-177-96, detection limit 0.016 µmol/L), and phosphate (method G-297-03, detection limit 0.025 µmol/L). Please see http://seal-analytical.com/Products/AA3SFAAnalyzer/tabid/59/Default.aspx for a complete instrument description. | SEAL AutoAnalyzer 3 four-channel segmented flow analyzer |
| Concentration measurements of water column phosphate, nitrate and nitrite, dissolved organic phosphorus, methane, and ethylene from samples collected during the R/V Neil Armstrong cruise AR16 in the western North Atlantic Ocean in May 2017 | SEAL Analytics autoanalyzer model 3 HR |