CATALYTIC DETERMINATION OF DISSOLVED INORGANIC CARBON IN NATURAL-WATERS BY FLOW-INJECTION SPECTROPHOTOMETRY

Authors
MANIASSO N SATO S GINE MF JACINTHO AO
Citation
N. Maniasso et al., CATALYTIC DETERMINATION OF DISSOLVED INORGANIC CARBON IN NATURAL-WATERS BY FLOW-INJECTION SPECTROPHOTOMETRY, Analyst, 121(11), 1996, pp. 1617-1619
Citations number
10
Categorie Soggetti
Chemistry Analytical
Journal title
Analyst → ACNP
ISSN journal
00032654
Volume
121
Issue
11
Year of publication
1996
Pages
1617 - 1619
Database
ISI
SICI code
0003-2654(1996)121:11<1617:CDODIC>2.0.ZU;2-3
Abstract
A flow injection procedure for the spectrophotometric determination of inorganic dissolved carbon in natural waters is described. The method is based on the ability of the hydrogencarbonate anion to catalyse th e slow reaction of EDTA with Cr-III ions of an aged aqueous solution, The proposed system handles up to 36 samples per hour with hydrogencar bonate contents ranging from 10 to 300 mg l(-1), with RSDs better than 1%, The results for waters agree well with those obtained by titratio n.