Pb and Cd accumulation in Avicennia marina from Qeshm Island,



accumulation of heavy metals Pb and Cd in the mangrove, Avicennia marina,
was studied on the southern coast of Iran, particularly on and near Qeshm
Island in the Persian Gulf. The samples were collected from 7 stations
which they were analyzed by flame Atomic absorption spectrophotometer after
chemical digestion. Maximum Pb and Cd in leaves are (34.50, 3.52 ppm) and
minimum of them are in stems (2.00, 0.05 ppm) and the accumulation of
metals in leaves is more than stems.  The different between monitored stations and accumulation of metals in tissues (P≥0.01) was not significant and there was no significant relationship
between the leaves and stems of metals concentration (P≥0.05) but it was
significant relationship between concentration of Pb and Cd in leaf tissue and
stem tissue alone. (P < 0.05). After entering these metals to food chain, are
accumulated in human body and this matter may cause some disease by receiving
metals more than provisional tolerable
weekly intake (PTWI) of lead and cadmium, in adults which in 0.025
and 0.007 mg/kg body weight with
standards ENHIS.