Some heavy metal contents and enzymes in two fish species from two areas along the White Nile

Abstract The objective of the present study was to determine heavy metals  and two enzymes of two fresh water fish namely: Oreochromis   niloticus and Synodontus  schall  from two sites along the White Nile . Al-Dubaseen area was considered the site with high contamination  where dumping of industrial  effluents takes place and Al-Kalakla  area was 5km south before the  dumping area and considered area with less pollution.  Twenty Fish samples  from the two sites were transported to the laboratory for the estimation of the  heavy metals Lead( Pb),Cadmium(Cd),Iron (Fe) ,Zinc(Zn) and two enzymes glutamic-pyruvic transaminase (GPT) and Glutamic-oxaloacetic transaminase (GOT)  .Results revealed that both fish species accumulated Pb,Fe,and Cu  above permissible levels whereas Cd and Zn levels were within permissible levels. Results also showed that gills in general accumulated more heavy metals than muscles in both studied species .The heavy metals pattern in both muscles and gills was  Fe> pb>Cu>Cd>Zn. The enzymatic estimation showed that activity of the two enzymes showed elevated  levels of GOT  than GPT in both fish collected from both two sites.