Dissolved Gaseous Mercury Production at a Marine Aquaculture Site in the Mercury-Contaminated Marano and Grado Lagoon, Italy.
Bull Environ Contam Toxicol
; 103(2): 218-224, 2019 Aug.
Article
em En
| MEDLINE
| ID: mdl-31030224
ABSTRACT
Dissolved gaseous mercury (DGM) production was examined in relation to ultraviolet radiation within a marine aquaculture site in the contaminated Marano and Grado Lagoon (Italy). The measured rates of DGM production relative to time elapsed (17.06 and 20.68 pg h-1, respectively) were substantially (6-20 times) higher than what has been observed in other marine Hg studies. We measured similar levels of DGM relative to dissolved total mercury (THgD) (0.84%-8.91%) at these sites in comparison to uncontaminated marine sites, however relative to other moderately-contaminated marine sites in Portugal the % DGM/THgD was high. These results suggest a substantial capacity for Hg volatilization from these highly contaminated lagoons to the atmosphere due to photoreduction mechanisms.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Aquicultura
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Gases
/
Mercúrio
País/Região como assunto:
Europa
Idioma:
En
Revista:
Bull Environ Contam Toxicol
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Canadá