<div><p>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.).</p>
<p>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).</p>
<p>Sulfate was determined by ion chromatography and conductivity detection with a Thermo-Fisher Dionex ICS-5000 ion chromatograph.</p>
<p>DOC was determined by high temperature combustion using a Shimadzu TOC-V total carbon analyzer (Burdige and Komada, 2011; Komada et al. 2016).</p>
<p>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).</p>
<p>Note: "ns" stands for "samples not collected for this analysis".</p></div>
GoM bottom water analysis
<div><p>This dataset includes results of analysis on sediment core bottom water samples collected from the northern Gulf of Mexico in May 2017 - initial pH, alkalinity, sulfate, DIC, and DOC.</p></div>
Gulf of Mexico bottom water analysis
<div><p>BCO-DMO Processing Notes:<br />
- added conventional header with dataset name, PI name, version date<br />
- modified parameter names to conform with BCO-DMO naming conventions<br />
- added columns for site, lat, and lon<br />
- reformatted collection date and time from m/d/yyyy H:MM to YYYY-MM-DDTHH:MM:SS (ISO 8601:2004E)</p></div>
745932
Gulf of Mexico bottom water analysis
2018-09-11T12:58:21-04:00
2018-09-11T12:58:21-04:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:745932
Chemical analysis from sediment core bottom water samples collected in the northern Gulf of Mexico, May 2017
This dataset includes results of analysis on sediment core bottom water samples collected from the northern Gulf of Mexico in May 2017 - initial pH, alkalinity, sulfate, DIC, and DOC.
false
Burdige, D., Long, M., Zimmerman, R. (2018) Chemical analysis from sediment core bottom water samples collected in the northern Gulf of Mexico, May 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2018-08-06 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.745932.1 [access date]
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1
10.1575/1912/bco-dmo.745932.1
false
2018-08-06
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