Speciation of arsenic in environmental samples of the Nha Trang Harbor, Vietnam, using HPLC coupled HG-AAS.
Bull Environ Contam Toxicol
; 86(4): 415-8, 2011 Apr.
Article
em En
| MEDLINE
| ID: mdl-21365299
ABSTRACT
A coupled high performance liquid chromatography-hydride generation-atomic absorption spectroscopy system was used to determine the speciation of arsenic in samples from the Nha Trang Harbor, Vietnam. Concentrations of arsenic in seawater, pore water, suspended solid, and sediment were 4.12-9.81 µg/L, 13.10-24.32 µg/L, 1.87-6.42 µg/g, and 3.37-9.06 µg/g, respectively. Extraction using H(3)PO(4) + NH(2)OH·HCl and ultrasonic digestion was optimized to yield a 76-85% of total arsenic. Arsenic (III) was the most abundant species in suspended solids and sediments whereas arsenic (V) represented for 30-50% of arsenic (III) concentration. Monomethylarsonic acid and dimethylarsinic acid species were undetectable.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Arsênio
/
Água do Mar
/
Poluentes Químicos da Água
/
Monitoramento Ambiental
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article