CALIBRATION OF AN AUTOMATIC INSTRUMENT FOR BICARBONATE MONITORING

Citation
Mc. Tomei et al., CALIBRATION OF AN AUTOMATIC INSTRUMENT FOR BICARBONATE MONITORING, Environmental technology, 15(4), 1994, pp. 363-372
Citations number
13
Categorie Soggetti
Environmental Sciences
Journal title
ISSN journal
09593330
Volume
15
Issue
4
Year of publication
1994
Pages
363 - 372
Database
ISI
SICI code
0959-3330(1994)15:4<363:COAAIF>2.0.ZU;2-9
Abstract
The performance of an automatic instrument which allows one to measure discontinously (every 20 minutes) bicarbonate alkalinity (BA) in comp lex organic solutions is evaluated. Bicarbonate concentration is deter mined from overpressure measurements in a sealed vessel where inorgani c carbon is completely converted to carbon dioxide after acidification of the sample. The accuracy of the instrument has been tested as a fu nction of various operating parameters (ratio of overhead ps volume in the vessel over the liquid sample volume, concentration of bicarbonat es and temperature). Error sources were evaluated and operating condit ions which yield satisfactory performance identified.