Dissolved biochemical elements

*DATASET-NAME : Alkalinity, pH and carbon dioxyd in the Adriatic, Otranto Strait Sea and Ionian Sea.

*TIME-PERIOD : 1997 to present

*GEOGRAPHIC COVERAGE : Southern Adriatic Sea, Otranto Strait and Northern Ionian Sea

*PROJECT : MASTIII/MTPII/MATER, MAss Transfer and Ecosystem Response

*PARAMETERS : Alkalinity, pH and carbon dioxyd measurements, on samples collected in correspondence of three main stations in the Adriatic Sea, Otranto Strait and Ionian Sea.

*INSTRUMENTS :

*SUMMARY : The alkalinity is defined as the quantity of hydrogen ions in milliequivalents to neutralize the weak bases in 1 kg of water and is a basic parameter in the approach to most biochemical processes involved in carbon cycling, from production to mineralization of organic matter.
The analytical method was a Gran titration on 25 ml water samples, according to the methods reported by Giordani et al. (1992), pH measurements were also carried out. The titrations have been completely carried out on board, immediately after the water sampling. From alkalinity data, pH, in-situ temperature and salinity of the water sample, CO2 has been calculated on board through equilibrium constants and this parameter can be used to estimate primary production by 14C in-situ incubations.

*REFERENCE :

*CENTRE :
OSSERVATORIO GEOFISICO SPERIMENTALE
Department of Oceanology
PO BOX 2011
IT-34016 TRIESTE
Italy
tel : +39 40 21401

*STORAGE-MEDIUM : Hard disk.

*AVAILABILITY : OGS, Osservatorio Geofisico Sperimentale, charged as Regional Data Center for the Adriatic/Ionian Basin. Data availability is submitted to the originator permission

*COMPLETED-BY : Stefano Miserocchi & Paola Giordani - IGM (Italy)

*ENTRY-DATE : 1999-10-13

Available Data Set(s) Processing Level
MAI1 MAR97 - Alkalinity, pH and carbon dioxyd measurements IN VALIDATION
MAI2 AUG97 - Alkalinity, pH and carbon dioxyd measurements IN VALIDATION
MAI5 MAR98 - Alkalinity, pH and carbon dioxyd measurements IN VALIDATION
MAI6 AUG98 - Alkalinity, pH and carbon dioxyd measurements IN VALIDATION
MAI8 FEB99 - Alkalinity, pH and carbon dioxyd measurements IN VALIDATION


Last update 15/05/2000

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