Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996
Not filtered water samples were taken in 10 ml ampoules (sealed immediately after being acidified with phosphoric acid to pH<2, sampling), or 40 ml screw-lid vials, and measured onboard at sampling or next days, or frozen (-20°C) until being acidified and measured in home labs.Carbon measurement...
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ftdatacite:10.1594/pangaea.696281 2023-05-15T17:33:15+02:00 Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996 Kähler, Paul Koeve, Wolfgang 2008 application/zip https://dx.doi.org/10.1594/pangaea.696281 https://doi.pangaea.de/10.1594/PANGAEA.696281 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/s0967-0637(00)00034-0 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY CTD/Rosette M36/2 Meteor 1986 Collection of Datasets article Collection 2008 ftdatacite https://doi.org/10.1594/pangaea.696281 https://doi.org/10.1016/s0967-0637(00)00034-0 2022-02-09T13:17:17Z Not filtered water samples were taken in 10 ml ampoules (sealed immediately after being acidified with phosphoric acid to pH<2, sampling), or 40 ml screw-lid vials, and measured onboard at sampling or next days, or frozen (-20°C) until being acidified and measured in home labs.Carbon measurement was by high-temperature catalytic oxydation in a 10 cm column packed with 5% Pt on aluminum oxide beads at 900°C in a stream of oxygen, and CO2 detection by infrared extinction after the removal of moisture and SO2 by appropriate traps (cold trap, Mg-percarbonate, Na-pyrophosphate, tin, bronze or Sulfix). The apparatus was the dual channel Dimatek 2000 equipped with a Binos 200 detector.Nitrogen was measured by chemoluminescence detection of NO2 in the combustion gases after leaving the Binos detector in one of the two channels of the setup. Most measurements of samples containing high nitrate were discarded, when data were inconsistent. The nature of nitrate interference is not clear. Article in Journal/Newspaper North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
CTD/Rosette M36/2 Meteor 1986 |
spellingShingle |
CTD/Rosette M36/2 Meteor 1986 Kähler, Paul Koeve, Wolfgang Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996 |
topic_facet |
CTD/Rosette M36/2 Meteor 1986 |
description |
Not filtered water samples were taken in 10 ml ampoules (sealed immediately after being acidified with phosphoric acid to pH<2, sampling), or 40 ml screw-lid vials, and measured onboard at sampling or next days, or frozen (-20°C) until being acidified and measured in home labs.Carbon measurement was by high-temperature catalytic oxydation in a 10 cm column packed with 5% Pt on aluminum oxide beads at 900°C in a stream of oxygen, and CO2 detection by infrared extinction after the removal of moisture and SO2 by appropriate traps (cold trap, Mg-percarbonate, Na-pyrophosphate, tin, bronze or Sulfix). The apparatus was the dual channel Dimatek 2000 equipped with a Binos 200 detector.Nitrogen was measured by chemoluminescence detection of NO2 in the combustion gases after leaving the Binos detector in one of the two channels of the setup. Most measurements of samples containing high nitrate were discarded, when data were inconsistent. The nature of nitrate interference is not clear. |
format |
Article in Journal/Newspaper |
author |
Kähler, Paul Koeve, Wolfgang |
author_facet |
Kähler, Paul Koeve, Wolfgang |
author_sort |
Kähler, Paul |
title |
Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996 |
title_short |
Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996 |
title_full |
Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996 |
title_fullStr |
Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996 |
title_full_unstemmed |
Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996 |
title_sort |
organic carbon and nitrogen concentrations on vertical profiles in waters of the north atlantic in june-july 1996 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2008 |
url |
https://dx.doi.org/10.1594/pangaea.696281 https://doi.pangaea.de/10.1594/PANGAEA.696281 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1016/s0967-0637(00)00034-0 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.696281 https://doi.org/10.1016/s0967-0637(00)00034-0 |
_version_ |
1766131685947080704 |