SENSITIVE DETERMINATION OF HUMIC-ACID IN NATURAL-WATER BY CHEMILUMINESCENCE FLOW-INJECTION METHOD

Authors
HU XC KITANO M TAKENAKA N BANDOW H MAEDA Y ZHANG DI
Citation
Xc. Hu et al., SENSITIVE DETERMINATION OF HUMIC-ACID IN NATURAL-WATER BY CHEMILUMINESCENCE FLOW-INJECTION METHOD, Bunseki Kagaku, 43(12), 1994, pp. 1077-1082
Citations number
8
Categorie Soggetti
Chemistry Analytical
Journal title
Bunseki Kagaku → ACNP
ISSN journal
05251931
Volume
43
Issue
12
Year of publication
1994
Pages
1077 - 1082
Database
ISI
SICI code
0525-1931(1994)43:12<1077:SDOHIN>2.0.ZU;2-B
Abstract
The chemiluminescence produced by the reaction between humic acid and hypobromite in alkaline solution has been applied to the determination of humic acid in natural water. The maximum wavelength of this chemil uminescence is 560 similar to 600 nm. The limit of detection for humic acid was 0.01 ppm. The interference from ammonium ion has been elimin ated by using an on-line cation exchange column. The interference from urea can be neglected because the concentration of urea in natural wa teris very low. Ferrous cation enhances the chemiluminescence of humic acid and hypobromite, but, does not enhance that of urea or ammonium ion.