Sequential injection spectrophotometric method for screening bromate produced as an ozonation water disinfection by-product.
Anal Sci
; 38(1): 137-143, 2022 Jan.
Article
em En
| MEDLINE
| ID: mdl-35287215
ABSTRACT
The aim of this work was the development of an automatic sequential injection analysis method to monitor the ozonation process for water disinfection. The determination was based on the reaction between bromate and o-dianisidine in the presence of bromide in acidic medium. The determination parameters were studied and adjusted to enable bromate quantification in the range 0.35-4.0 mg BrO3-/L with a limit of detection of 20 µg BrO3-/L. The choice of a sequential injection procedure enabled a minimal consumption of reagents and no need for sample pre-treatment. The developed sequential injection proved to be accurate with < 5% relative deviation when compared to ICP-MS and an average of 101% in recovery percentages studies. It was effectively applied to monitor an ozonation process enabling the follow-up of the process with real-time quantification of the bromate content.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ozônio
/
Bromatos
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Idioma:
En
Revista:
Anal Sci
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Portugal