TRACE ELEMENTS STATUS IN SURFICIAL SRDIMEN-n; OF LAKE MANZALAH, EGYPT

TRACE ELEMENTS STATUS IN SURFICIAL SRDIMEN-n;
OF LAKE MANZALAH, EGYPT
A. R. ABDEL – MOATI AND N. M. DOWIDAR
Oceanography Dept.• Faculty of Science. Aleaandria. Egypt.
ABSTRACT
The present paper includes detailed study on
the geochem1cal status of nfne elements (Al. Fe.
MIl. In. Pb. Nf. Cu. Co and Cd) .fn the surffc1al
sedfments of lake Manzalah. the larg~st ~rthern
Delta ,lake fn Egypt. Increased rate of dra1n water
reachfng .the lake dee_ it necessary to doeu..nt
and evaluate the fmportant changes thast took place
durfng the last 15 years. Attentfon was patd to
the levels and dfstrfbutfon of both exchangeable
and resfdual fOnls of these elenen’s tn lake
sed·f~nts. The geaochemfstr,y of these elements
fn the oxfc and anoxfc reefon of the lake was
discussed. The ….lative abundance of studied
elements was Al>Fe»Mn>Zn>Pb Nf>Cu>Co»Cd.
Intercomparfson wfth other ~11e Delta lakes fndfcates
the enrfchMent of Cu. Pb. Cd, and Co fn lake Manzalah
sedients.