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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.696281 2023-05-15T17:34:47+02:00 Organic carbon and nitrogen concentrations on vertical profiles in waters of the North Atlantic in June-July 1996 Kähler, Paul Koeve, Wolfgang MEDIAN LATITUDE: 46.288058 * MEDIAN LONGITUDE: -20.516000 * SOUTH-BOUND LATITUDE: 32.990000 * WEST-BOUND LONGITUDE: -21.970000 * NORTH-BOUND LATITUDE: 59.493300 * EAST-BOUND LONGITUDE: -19.796700 * DATE/TIME START: 1996-06-25T00:42:00 * DATE/TIME END: 1996-07-14T05:16:00 2008-06-26 application/zip, 12 datasets https://doi.pangaea.de/10.1594/PANGAEA.696281 https://doi.org/10.1594/PANGAEA.696281 en eng PANGAEA Kähler, Paul; Koeve, Wolfgang (2001): Marine dissolved organic matter: can its C : N ratio explain carbon overconsumption? Deep Sea Research Part I: Oceanographic Research Papers, 48(1), 49-62, https://doi.org/10.1016/S0967-0637(00)00034-0 https://doi.pangaea.de/10.1594/PANGAEA.696281 https://doi.org/10.1594/PANGAEA.696281 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY CTD/Rosette CTD-RO M36/2 M36/2-CTD-178_002 M36/2-CTD-179_009 M36/2-CTD-180_011 M36/2-CTD-181_013 M36/2-CTD-183_016 M36/2-CTD-184_018 M36/2-CTD-186_020 M36/2-CTD-188_028 M36/2-CTD-189_030 M36/2-CTD-190_032 M36/2-CTD-193_038 M36/2-CTD-194_040 Meteor (1986) Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.696281 2023-01-20T07:31:12Z 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. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-21.970000,-19.796700,59.493300,32.990000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
CTD/Rosette CTD-RO M36/2 M36/2-CTD-178_002 M36/2-CTD-179_009 M36/2-CTD-180_011 M36/2-CTD-181_013 M36/2-CTD-183_016 M36/2-CTD-184_018 M36/2-CTD-186_020 M36/2-CTD-188_028 M36/2-CTD-189_030 M36/2-CTD-190_032 M36/2-CTD-193_038 M36/2-CTD-194_040 Meteor (1986) |
spellingShingle |
CTD/Rosette CTD-RO M36/2 M36/2-CTD-178_002 M36/2-CTD-179_009 M36/2-CTD-180_011 M36/2-CTD-181_013 M36/2-CTD-183_016 M36/2-CTD-184_018 M36/2-CTD-186_020 M36/2-CTD-188_028 M36/2-CTD-189_030 M36/2-CTD-190_032 M36/2-CTD-193_038 M36/2-CTD-194_040 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 CTD-RO M36/2 M36/2-CTD-178_002 M36/2-CTD-179_009 M36/2-CTD-180_011 M36/2-CTD-181_013 M36/2-CTD-183_016 M36/2-CTD-184_018 M36/2-CTD-186_020 M36/2-CTD-188_028 M36/2-CTD-189_030 M36/2-CTD-190_032 M36/2-CTD-193_038 M36/2-CTD-194_040 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 |
Dataset |
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 |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.696281 https://doi.org/10.1594/PANGAEA.696281 |
op_coverage |
MEDIAN LATITUDE: 46.288058 * MEDIAN LONGITUDE: -20.516000 * SOUTH-BOUND LATITUDE: 32.990000 * WEST-BOUND LONGITUDE: -21.970000 * NORTH-BOUND LATITUDE: 59.493300 * EAST-BOUND LONGITUDE: -19.796700 * DATE/TIME START: 1996-06-25T00:42:00 * DATE/TIME END: 1996-07-14T05:16:00 |
long_lat |
ENVELOPE(-21.970000,-19.796700,59.493300,32.990000) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Kähler, Paul; Koeve, Wolfgang (2001): Marine dissolved organic matter: can its C : N ratio explain carbon overconsumption? Deep Sea Research Part I: Oceanographic Research Papers, 48(1), 49-62, https://doi.org/10.1016/S0967-0637(00)00034-0 https://doi.pangaea.de/10.1594/PANGAEA.696281 https://doi.org/10.1594/PANGAEA.696281 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.696281 |
_version_ |
1766133732509483008 |