Improvements in a fast potentiometric seawater alkalinity determination
19 páginas, 12 figuras, 1 tabla During the Cither 3 cruise along WOCE section A14, where 107 full-water column stations were surveyed, pH and alkalinity were measured potentiometrically. Corrections carried out on the raw data set have allowed us to improve the data quality. The correction procedure...
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ftcsic:oai:digital.csic.es:10261/56954 2024-02-11T10:06:01+01:00 Improvements in a fast potentiometric seawater alkalinity determination Mejoras en las determinaciones potenciométricas del sistema de CO2 oceánico usando agua de mar subestándar y materiales de referencia de CO2 Pérez, Fiz F. Ríos, Aida F. Rellán, Trinidad Álvarez, Marta 2000 http://hdl.handle.net/10261/56954 es en spa eng Universidad Autónoma de Baja California http://redalyc.uaemex.mx/pdf/480/48026305.pdf Ciencias Marinas 25(1): 31-49 (2001) 0185-3880 http://hdl.handle.net/10261/56954 open PH Alkalinity Potentiometry Seawater Carbon dioxide artículo http://purl.org/coar/resource_type/c_6501 2000 ftcsic 2024-01-16T09:41:01Z 19 páginas, 12 figuras, 1 tabla During the Cither 3 cruise along WOCE section A14, where 107 full-water column stations were surveyed, pH and alkalinity were measured potentiometrically. Corrections carried out on the raw data set have allowed us to improve the data quality. The correction procedure was focused on monitoring: (i) calibrations, (ii) liquid junction potential and (iii) seawater sub-standards; CO2 reference material (CRM) has been used to check this procedure. Accuracy of pH15 measurements (NBS scale) and alkalinity was 0.004 and 1.4 μmol.kg–1, respectively. Certified total inorganic carbon on CRM, batch 24, is 1987.55 μmol.kg.–1. A value of 1987.8 ± 2.2 μmol.kg–1 was obtained following the correction procedure. This improvement was independently verified by means of the covariances between nitrate and pH, and between silicate and normalized alkalinity in North Atlantic Deep Water. This work was supported by CICYT (grant number ANT94-1168-E) and IFREMER (University contract number 94-1430-087). Peer reviewed Article in Journal/Newspaper North Atlantic Deep Water North Atlantic Digital.CSIC (Spanish National Research Council) Referencia |
institution |
Open Polar |
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Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
Spanish English |
topic |
PH Alkalinity Potentiometry Seawater Carbon dioxide |
spellingShingle |
PH Alkalinity Potentiometry Seawater Carbon dioxide Pérez, Fiz F. Ríos, Aida F. Rellán, Trinidad Álvarez, Marta Improvements in a fast potentiometric seawater alkalinity determination |
topic_facet |
PH Alkalinity Potentiometry Seawater Carbon dioxide |
description |
19 páginas, 12 figuras, 1 tabla During the Cither 3 cruise along WOCE section A14, where 107 full-water column stations were surveyed, pH and alkalinity were measured potentiometrically. Corrections carried out on the raw data set have allowed us to improve the data quality. The correction procedure was focused on monitoring: (i) calibrations, (ii) liquid junction potential and (iii) seawater sub-standards; CO2 reference material (CRM) has been used to check this procedure. Accuracy of pH15 measurements (NBS scale) and alkalinity was 0.004 and 1.4 μmol.kg–1, respectively. Certified total inorganic carbon on CRM, batch 24, is 1987.55 μmol.kg.–1. A value of 1987.8 ± 2.2 μmol.kg–1 was obtained following the correction procedure. This improvement was independently verified by means of the covariances between nitrate and pH, and between silicate and normalized alkalinity in North Atlantic Deep Water. This work was supported by CICYT (grant number ANT94-1168-E) and IFREMER (University contract number 94-1430-087). Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Pérez, Fiz F. Ríos, Aida F. Rellán, Trinidad Álvarez, Marta |
author_facet |
Pérez, Fiz F. Ríos, Aida F. Rellán, Trinidad Álvarez, Marta |
author_sort |
Pérez, Fiz F. |
title |
Improvements in a fast potentiometric seawater alkalinity determination |
title_short |
Improvements in a fast potentiometric seawater alkalinity determination |
title_full |
Improvements in a fast potentiometric seawater alkalinity determination |
title_fullStr |
Improvements in a fast potentiometric seawater alkalinity determination |
title_full_unstemmed |
Improvements in a fast potentiometric seawater alkalinity determination |
title_sort |
improvements in a fast potentiometric seawater alkalinity determination |
publisher |
Universidad Autónoma de Baja California |
publishDate |
2000 |
url |
http://hdl.handle.net/10261/56954 |
geographic |
Referencia |
geographic_facet |
Referencia |
genre |
North Atlantic Deep Water North Atlantic |
genre_facet |
North Atlantic Deep Water North Atlantic |
op_relation |
http://redalyc.uaemex.mx/pdf/480/48026305.pdf Ciencias Marinas 25(1): 31-49 (2001) 0185-3880 http://hdl.handle.net/10261/56954 |
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open |
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1790603387902885888 |