recorded higher
values of Cu, Zn, Cd, and Pb (0.08, 7.94, 0.11, and 0.64
mg/L, respectively); and Ibrahim et al. (1999a) found
a higher value of Pb (0.09 mg/L) but lower levels of
Cu, Zn, and Cd (0.03, 0.23, and 0.005 mg/L,
respectively) than in the present study.