<div><p>For dissolved samples: 0.45 µm Supor membrane filtered seawater samples from the GEOTRACES Carousel/GO-FLO bottles were placed into 1 L borosilicate glass bottles and acidified to pH < 2 by addition of 4 mL 6 M HCl. Samples were stored at room temperature in the dark.</p>
<p>Dissolved selenite, selenite+ selenite, and total dissolved selenium concentrations were determined in triplicate using selective hydride generation/atomic absorption spectrometry following Cutter (1978), Cutter (1983), and Cutter and Bruland (1984). The standard addition method of calibration was used to assure accuracy (one sample on an analysis day was used and its slope applied to the other samples on that day). Selenate was calculated as the difference between selenite+selenate and selenite determinations, while organic selenide was the difference between total dissolved selenium and selenite+selenate determinations. Precision was always less than 10% RSD, but typically less than 5% RSD at the observed concentrations. Detection limits were 0.02 nmol/L for all selenium species.</p></div>
GN01 Healy HLY1502 Depth Profiles Selenium Speciation Selenite (SeIV), Selenate (SeVI), Organic selenide (Org Se-II), and Total Se depth profiles
<div><p>Data have been submitted to BCO-DMO and are currently being processed (2019-10-08).</p></div>
GN01 Se Speciation
<div><p>Samples analyzed in triplicate and means computed. Standard additions of selenite were used for daily calibration on a representative sample and its slope applied to subsequent samples.</p></div>
778741
GN01 Se Speciation
2019-10-07T15:58:55-04:00
2019-10-07T15:58:55-04:00
2019-10-08T15:51:09-04:00
urn:bcodmo:dataset:778741
Selenium speciation depth profiles, including Selenite (SeIV), Selenate (SeVI), Organic selenide (Org Se-II), and Total Se, from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015
false
Cutter, G. A. (2019) Selenium speciation depth profiles, including Selenite (SeIV), Selenate (SeVI), Organic selenide (Org Se-II), and Total Se, from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2019-10-07 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/778741 [access date]
false
1
false
2019-10-07
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http://lod.bco-dmo.org/id/dataset/778741
2015-08-13 - 2015-10-08
2015-08-13
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