©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 sample is injected into a flowing carrier solution passing rapidly through small-bore tubing.
| Dataset Name | PI-Supplied Description | PI-Supplied Name |
|---|---|---|
| Macronutrients and dissolved and particulate trace metals collected from the R/V Atlantic Explorer cruise AE1913 in the Sargasso Sea in June of 2019 | Alpkem Rapid Flow Analyzer | |
| Concentrations of trace metals and dissolved macronutrients and CTD sensor data from four cruises in the Bermuda Atlantic Time-series Study (BATS) region in March, May, August and November 2019 | continuous flow analysis following the protocols of the Bermuda Atlantic Time-series Study | continuous flow analysis |
| Chemical data associated with field collections from the Gulf of Maine, Nauset Marsh Estuary System, and Long Island Sound (Alexandrium isotopes project) | Used to quantify NH4+, NO3-/NO2-, Silicate, and PO43- | SEAL AA3 four-channel segmented flow analyzer |
| Accession numbers and images of coral samples taken in the Florida Keys during 2013 (Coral Microbial Relationships project) | Dissolved inorganic nutrients measured. | Continous Segmented Flow System |
| Denitrification and DNRA data from Little Lagoon, Alabama collected from 2012-2013 | Used to measure continuous flow rate | Continuous Flow Analyzer |
| Porewater sulfate, sulfide, ammonia, phosphate, and silicate concentrations in Alvin pushcore samples from Guaymas Basin hydrothermal sediments collected on R/V Atlantis cruise AT37-06 in December 2016 | QuAAtro39; Seal Analytical | |
| Monthly cross-shore transects of biogeochemical properties in La Jolla, CA | For NO3: Instrument utilizes an analytical method where N-1-N (NEDD) and sulfanilamide are reacted with the sample to form a red dye, which is measured at an absorbance of 520-540 nm. For nitrate analysis, the nitrate is first reduced to nitrite by the sample being mixed with a buffer solution (ie., Ammonium Chloride or Imidazole) and passed over a cadmium column that has been treated with copper sulfate, which catalyzes the reduction reaction. The resulting nitrite is then analyzed and the final output for the ‘nitrate’ channel is a sum of both nitrate and nitrite. It is important therefore to analyze nitrite separately so that nitrate can be determined by subtracting from the total nitrate plus nitrite concentration (Becker et al., 2019). For analysis of PO4 in seawaters acidic solution of molybdate is added, followed by the addition of a reducing compound (dihydrazine sulfate or ascorbic acid) to form a phospho-molybdenum blue complex with the absorbance measured at approximately 820 or 880nm, depending on the method and availability of filters (Becker et al., 2019). For analysis of SIL, acidified ammonium molybdate is added to a seawater sample to produce silicomolybdic acid, which is then reduced to a silicomolybdenum blue complex following the addition of stannous chloride or ascorbic acid, and measured at 660nm for stannous chloride or 820nm for ascorbic acid (Becker et al., 2019). For NO2: Instrument utilizes an analytical method where N-1-N (NEDD) and sulfanilamide are reacted with the sample to form a red dye, which is measured at an absorbance of 520-540 nm. For nitrate analysis, the nitrate is first reduced to nitrite by the sample being mixed with a buffer solution (ie., Ammonium Chloride or Imidazole) and passed over a cadmium column that has been treated with copper sulfate, which catalyzes the reduction reaction. The resulting nitrite is then analyzed and the final output for the ‘nitrate’ channel is a sum of both nitrate and nitrite. It is important therefore to analyze nitrite separately so that nitrate can be determined by subtracting from the total nitrate plus nitrite concentration (Becker et al., 2019). For NH3: In the fluorometric method, without using any membrane diffusion, the sample is combined with a working reagent made up of OPA, sodium sulfite, a borate buffer, and then heat to 75°C. Fluorescence proportional to the ammonium concentration is measured at 460nm following excitation at 370nm (Becker et al., 2019). | Seal Analytical continuous-flow AutoAnalyzer 3 |
| Site descriptions and physical environmental conditions in coral microbiomes in the Florida Keys during 2013 (Coral Microbial Relationships project) | Dissolved inorganic nutrients measured. | Continous Segmented Flow System |
| Sediment core porewater and particulate measurements from three sites on the Louisiana Shelf sampled during R/V Pelican cruises from December 2021 through August 2022 | The Skalar San++ Automated Wet Chemistry Analyzer, also known as continuous flow analyzer, was used to analyze porewater for nitrate, nitrite, phosphorus, and ammonia. | Skalar San++ Automated Wet Chemistry Analyzer |
| Sediment core porewater and particulate measurements from three sites on the Louisiana Shelf sampled during R/V Pelican cruises in August 2021 | The Skalar San++ Automated Wet Chemistry Analyzer, also known as continuous flow analyzer, was used to analyze porewater for nitrate, nitrite, phosphorus, and ammonia. | Skalar San++ Automated Wet Chemistry Analyzer |