The use of nitrite ion in the chromatographic determination of large amounts of hypochlorite ion and of traces of chlorite and chlorate ions

Citation
A. Gallina et al., The use of nitrite ion in the chromatographic determination of large amounts of hypochlorite ion and of traces of chlorite and chlorate ions, ANALYST, 124(10), 1999, pp. 1439-1442
Citations number
11
Categorie Soggetti
Chemistry & Analysis","Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYST
ISSN journal
00032654 → ACNP
Volume
124
Issue
10
Year of publication
1999
Pages
1439 - 1442
Database
ISI
SICI code
0003-2654(199910)124:10<1439:TUONII>2.0.ZU;2-N
Abstract
An ion chromatographic procedure was developed for the one-run determinatio n of ClO-, ClO2- and ClO3- present at very different concentration levels i n the same sample. The method is based on the quantitative and fast reducti on of HClO in slightly acidic medium by added sodium nitrite, followed by t he ion chromatographic determination of ClO2-, ClO3- and the generated NO3- . The possibility of amperometric titration of the 'free chlorine' with a s tandard solution of NaNO2 was also ascertained. The performance characteris tics of the analysis were defined.