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The filtrate from filtration through a 0.7 \u00b5m GF\/F filter and a 0.2 um omnipore filter was acidified to pH 2-3 with 12 M hydrochloric acid and extracted using solid phase extraction (1 g Agilent Bond Elut PPL cartridge, 6 mL cartridge volume) and eluted with methanol (according to methods described in Dittmar et al., 2008; Longnecker et al., 2015). Extracts were stored at -20C until analysis.<\/p>\n
A Phenomenex C18 reversed phase column (Synergi\u00a0Fusion, 2.1 x 150 mm, 4\u00a0um) coupled via a heated ESI source to a triple quadrupole mass spectrometer (Thermo Scientific TSQ Vantage) was used to measure metabolites (Kido Soule et al., 2015).<\/p><\/div>","@type":"rdf:HTML"}],"http:\/\/ocean-data.org\/schema\/hasBriefDescription":[{"@value":"Targeted dissolved metabolite abundances","@language":"en-US"}],"http:\/\/purl.org\/dc\/terms\/description":[{"@value":"
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See related dataset: Sample depth, lat, lon, station, time, and cast are from CTD profiles are also included in this dataset. \u00a0For more information about the data from CTDs refer to the following datasets: Peaks were detected and integrated using MAVEN (Melamud et al., 2010). Metabolites were quantified using calibration curves and MQ blanks were subtracted. The dissolved metabolites were corrected to account for their solid phase extraction efficiencies (Johnson et al., 2017). For limits of detection please refer to Johnson et al., 2017.<\/p>\n BCO-DMO Data Manager Processing Notes:
Targeted metabolite abundances: Particulate<\/a><\/p>\n
CTD<\/a>
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\n* added a conventional header with dataset name, PI name, version date
\n* modified parameter names to conform with BCO-DMO naming conventions
\n* blank values replaced with no data value 'nd'
\n* changed micro (u) symbol to u in the data.
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\n* time 0 padded if less than 4 numbers (731 -> 0731)
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