Zinc and cadmium contamination in an Avicennia schaueriana mangrove environment: Mass balance and tissue distribution.
Mar Pollut Bull
; 184: 114170, 2022 Nov.
Article
em En
| MEDLINE
| ID: mdl-36307951
The leachate pond of a Zn processing plant in Rio de Janeiro, Brazil, released Zn and Cd into a mangrove during three decades. Soil, root, stems, leaves and phloem bark samples of Avicenna schaueriana from the mangrove were collected and analyzed. Zn and Cd levels were measured by atomic absorption and were much more concentrated in soil at 76 kg/ha and 424 kg/ha respectively than in the trees (272.3 kg/ha Zn and 0.046 kg/ha Cd). This species shows a protective mechanism against uptake. The high content of Cd in the bark phloem was due to exposure to tidal flooding with high concentrations of Cd, not translocation from the roots. Allometry, and the biomass of roots, stems, leaves and bark showed that only a small percentage was phytoextracted by A. schaueriana, so this species under the described concentrations cannot phytoaccumulate and should not be used in phytoextraction.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes do Solo
/
Avicennia
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Mar Pollut Bull
Ano de publicação:
2022
Tipo de documento:
Article
País de publicação:
Reino Unido