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            <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset/957694.rdf" xlink:actuate="onRequest">Total alkalinity from an experiment testing the suitability of high-density polyethylene (HDPE) for collection and long-term storage of total alkalinity samples using laboratory-manipulated oligotrophic Atlantic surface water</gmx:Anchor>
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            <gco:CharacterString>Cite this dataset as: Woosley, R., Neithardt, D., Bruno, J. A. (2025) Total alkalinity from an experiment testing the suitability of high-density polyethylene (HDPE) for collection and long-term storage of total alkalinity samples using laboratory-manipulated oligotrophic Atlantic surface water. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-04-03 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.957694.1 [access date]</gco:CharacterString>
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        <gco:CharacterString>TA HDPE bottle storage test Dataset Description:  Methods and Sampling: &amp;lt;p&amp;gt;125-milliliter (mL) high-density polyethylene (HDPE)&amp;amp;nbsp;oblong wide-mouth bottles certified to meet EPA performance-based standards for metals, cyanide, and fluoride (Fisher Scientific product number 05-721-147) were used. The bottles had been previously used on GP17-OCE (R/V Roger Revelle cruise RR2214). Bottles were pretreated in one of five treatments: 1.) no further conditioning, 2.) 1-week soak in low nutrient surface seawater, 3.) 2-week soak in low nutrient surface seawater 4.) 1-week soak in milli-Q water or 5.) a 2-week soak in milli-Q water.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;After the treatment, the bottles were rinsed with milli-Q water 3 times and allowed to dry in a fume hood. All of the bottles were then filled with low-nutrient surface seawater collected from the North Atlantic (39˚ 46.406'&amp;amp;nbsp;N, 70˚ 53.065'&amp;amp;nbsp;W on October 10, 2019). A 20-liter (L)&amp;amp;nbsp;carboy was filled with the seawater (that had previously been poisoned to ~0.04% HgCl2) by filtering through a 0.8/0.2-micrometer (um)&amp;amp;nbsp;AcroPak™ 1000 filter (Pall Laboratories, Port Washington, New York USA, product number 1515-002). After filtering, the carboy was shaken vigorously to ensure it was well mixed and allowed to equilibrate overnight. The practical salinity of the water was 34.992, and the initial TA was determined to be 2299.68 ±0.59 (N=5). More details can be found in Woosley et al. (submitted).&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Instrumentation:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
Samples were analyzed in the lab for total alkalinity using a custom-designed open cell titration with non-linear least squares fitting designed and built by the laboratory of Andrew G. Dickson (University of California, San Diego) and described in detail in Dickson et al. (2003).&amp;lt;/p&amp;gt;</gco:CharacterString>
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&amp;lt;p&amp;gt;After the treatment, the bottles were rinsed with milli-Q water 3 times and allowed to dry in a fume hood. All of the bottles were then filled with low-nutrient surface seawater collected from the North Atlantic (39˚ 46.406'&amp;amp;nbsp;N, 70˚ 53.065'&amp;amp;nbsp;W on October 10, 2019). A 20-liter (L)&amp;amp;nbsp;carboy was filled with the seawater (that had previously been poisoned to ~0.04% HgCl2) by filtering through a 0.8/0.2-micrometer (um)&amp;amp;nbsp;AcroPak™ 1000 filter (Pall Laboratories, Port Washington, New York USA, product number 1515-002). After filtering, the carboy was shaken vigorously to ensure it was well mixed and allowed to equilibrate overnight. The practical salinity of the water was 34.992, and the initial TA was determined to be 2299.68 ±0.59 (N=5). More details can be found in Woosley et al. (submitted).&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Instrumentation:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
Samples were analyzed in the lab for total alkalinity using a custom-designed open cell titration with non-linear least squares fitting designed and built by the laboratory of Andrew G. Dickson (University of California, San Diego) and described in detail in Dickson et al. (2003).&amp;lt;/p&amp;gt;</gco:CharacterString>
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				    <gco:CharacterString>Unavailable</gco:CharacterString>
				  </gmd:voice>
				  <gmd:facsimile>
				    <gco:CharacterString>508-289-2009</gco:CharacterString>
				  </gmd:facsimile>
				</gmd:CI_Telephone>
		  </gmd:phone>
		  <gmd:address>
		    <gmd:CI_Address>
				  <gmd:deliveryPoint>
				    <gco:CharacterString>WHOI MS#36</gco:CharacterString>
				  </gmd:deliveryPoint>
				  <gmd:city>
				    <gco:CharacterString>Woods Hole</gco:CharacterString>
				  </gmd:city>
				  <gmd:administrativeArea>
				    <gco:CharacterString>MA</gco:CharacterString>
				  </gmd:administrativeArea>
				  <gmd:postalCode>
				    <gco:CharacterString>02543</gco:CharacterString>
				  </gmd:postalCode>
				  <gmd:country>
				    <gco:CharacterString>USA</gco:CharacterString>
				  </gmd:country>
				  <gmd:electronicMailAddress>
				    <gco:CharacterString>info@bco-dmo.org</gco:CharacterString>
				  </gmd:electronicMailAddress>
		    </gmd:CI_Address>
		  </gmd:address>
      <gmd:onlineResource>
          <gmd:CI_OnlineResource>
            <gmd:linkage>
              <gmd:URL>http://www.bco-dmo.org</gmd:URL>
            </gmd:linkage>
          </gmd:CI_OnlineResource>
        </gmd:onlineResource>
		  <gmd:hoursOfService>
        <gco:CharacterString>Monday - Friday 8:00am - 5:00pm</gco:CharacterString>
      </gmd:hoursOfService>
		  <gmd:contactInstructions>
		    <gco:CharacterString>For questions regarding this resource, please contact BCO-DMO via the email address provided.</gco:CharacterString>
		  </gmd:contactInstructions>
		</gmd:CI_Contact>
  </gmd:contactInfo>
  <gmd:role>
    <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact"  codeSpace="007">pointOfContact</gmd:CI_RoleCode>
  </gmd:role>
</gmd:CI_ResponsibleParty>
      </gmd:contact>
    </gmd:MD_MaintenanceInformation>
  </gmd:metadataMaintenance>
  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation>
    <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/957688.rdf" xlink:title="High density polyethylene water bottle" xlink:actuate="onRequest">high-density polyethylene (HDPE) oblong wide-mouth bottles</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>high-density polyethylene (HDPE) oblong wide-mouth bottles</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: high-density polyethylene (HDPE) oblong wide-mouth bottles PI Supplied Instrument Description:125 mL HDPE oblong wide-mouth bottles certified to meet EPA performance-based standards for metals, cyanide, and fluoride (Fisher Scientific product number 05-721-147) were used. Instrument Name: High density polyethylene water bottle Instrument Short Name:HDPE bottle   Instrument Description: A high density polyethylene (HDPE) water bottle. Often used for surface sampling from small boats. HDPE has a somewhat higher chemical resistance than low density polyethylene (LDPE). HDPE is also somewhat harder and more opaque and it can withstand higher temperatures (120 degrees Celsius for short periods, 110 degrees Celsius continuously).</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/682.rdf" xlink:title="Titrator" xlink:actuate="onRequest">custom designed open cell titration</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>custom designed open cell titration</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: custom designed open cell titration PI Supplied Instrument Description:Samples were analyzed in the lab for total alkalinity using a custom designed open cell titration with non-linear least squares fitting designed and built by the laboratory of Andrew G. Dickson (University of California, San Diego) and described in detail in Dickson et al. (2003). Instrument Name: Titrator Instrument Short Name:Titrator   Instrument Description: Titrators are instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>
