Shipboard analysis of picomolar levels of manganese in seawater by chelating resin concentration and chemiluminescence detection.
Anal Bioanal Chem
; 378(5): 1288-93, 2004 Mar.
Article
em En
| MEDLINE
| ID: mdl-14740144
ABSTRACT
A new shipboard analytical method for determining picomolar levels of manganese in seawater has been developed. The method is based on a combination of chelating resin column extraction and improved chemiluminescence (CL) detection in a closed flow system. In this method, manganese in sample solution is selectively collected on newly-developed iminodiacetate-immobilized chelating resin, and then eluted with acidic solution containing hydrogen peroxide. The resulting eluent is mixed with luminol solution and aqueous ammonia after removal of iron ions by a chelating resin column, and then the mixture is introduced into the CL cell. The manganese concentration is obtained from the CL intensity. The detection limit (3SD) of manganese is 5 pmol L(-1) from 9 mL of seawater sample. The method was applied to seawater samples collected at the Okinawa Trough.
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Base de dados:
MEDLINE
Assunto principal:
Água do Mar
/
Polímeros de Fluorcarboneto
/
Quelantes
/
Medições Luminescentes
/
Manganês
Idioma:
En
Ano de publicação:
2004
Tipo de documento:
Article