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OAS accession Detail for 0291421
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| accessions_id: | 0291421 | archive |
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| Title: | Chemical analysis from sediment core pore water samples collected in the back barrier island bays on Virginia’s Eastern Shore in July 2017 (NCEI Accession 0291421) |
| Abstract: | This dataset contains chemical and physical data collected in the North Atlantic Ocean from 2017-07-12 to 2017-07-21. These data include Ammonium, Fe, dissolved inorganic Carbon, dissolved organic Carbon, pH, sulfate, and total alkalinity. The instruments used to collect these data include Automatic titrator, Benchtop pH Meter, Conductivity Meter, Ion Chromatograph, Spectrophotometer, and Total Organic Carbon Analyzer. These data were collected by Dr David J. Burdige and Dr Richard C. Zimmerman of Old Dominion University and Dr Matthew Long of Woods Hole Oceanographic Institution as part of the "Toward an Improved Understanding of Blue Carbon: The Role of Seagrasses in Sequestering CO2 (Seagrass Blue Carbon)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2019-03-20. The following is the text of the dataset description provided by BCO-DMO: Eastern Shore pore water analysis Dataset Description: This dataset includes results of analysis on sediment cores collected in the back barrier island bays on Virginia’s Eastern Shore in July 2017 - initial pH, alkalinity, sulfate, DIC, Fe, NH4, sulfide, and DOC. |
| Date received: | 20190320 |
| Start date: | 20170712 |
| End date: | 20170721 |
| Seanames: | North Atlantic Ocean |
| West boundary: | -75.835 |
| East boundary: | -75.798 |
| North boundary: | 37.344 |
| South boundary: | 37.266 |
| Observation types: | chemical, physical |
| Instrument types: | chromatograph, conductivity sensor, pH sensor, spectrophotometer, titrator, Total Organic Carbon (TOC) analyzer |
| Datatypes: | AMMONIUM (NH4), DISSOLVED INORGANIC CARBON (DIC), DISSOLVED ORGANIC CARBON, Iron, pH, Sulfate (SO4 2-), total alkalinity |
| Submitter: | |
| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
| Collecting institutions: | Old Dominion University, Woods Hole Oceanographic Institution |
| Contributing projects: | |
| Platforms: | |
| Number of observations: | |
| Supplementary information: | Acquisition Description: Sediment cores were collected by divers, sealed in the field with rubber stoppers and returned to the lab for processing. Pore waters were collected by inserting rhizon samplers (Seeberg-Elverfeldt et al., 2005) through pre-drilled holes in the core tubes. Samples were collected in gas-tight glass syringes and filtered through 0.45 µm nylon filters into storage vials. Alkalinity samples were titrated within 12hr of collection; other samples were returned to the lab for analysis, using techniques routinely used in my lab: alkalinity and initial pH - Hu and Burdige (2008); sulfate, DIC, ammonium and DOC - Burdige and Komada (2011), Komada et al. (2016); sulfide - Cline (1969), Abdulla et al. (in prep.). Alkalinity and initial pH were determined by Gran Titration using a Metrohm automatic titrator (model 785 DMP Titrino) combined with a Cole-Parmer pH electrode, calibrated using pH 4.00, 7.00 and 10.00 NIST-traceable buffers (Hu and Burdige, 2008). Sulfate was determined by ion chromatography and conductivity detection with a Thermo-Fisher Dionex ICS-5000 ion chromatograph, while DOC was determined by high-temperature combustion using a Shimadzu TOC-V total carbon analyzer (Burdige and Komada, 2011; Komada et al. 2016). Ammonium and DIC were determined by FIA analysis using a home-built system consisting of a Rainin Rabbit peristaltic pump and a Dionex CDM-II conductivity detector (Hall and Aller, 1992; Lustwerk and Burdige, 1995). Total dissolved sulfide was determined spectrophotometrically with an Ocean Optics USB400 UV-Vis spectrophotometer (Cline, 1969; Abdulla et al., in prep.); Total dissolved iron was also determined spectrophotometrically by the ferrozine method using the same spectrophotometer (Viollier et al., 2000). Note: "ns" stands for "samples not collected for this analysis". |
| Availability date: | |
| Metadata version: | 1 |
| Keydate: | 2024-04-20 19:27:08+00 |
| Editdate: | 2024-04-20 19:27:41+00 |