Nickel and molybdenum couldn’t be identified from patients’ urine in this study by the Sam
and Stanley method.
The concentration of zinc in all areas fell within the standard limit (2.00 ppm, Figure 7). Only
two samples from El-Salam area, which were 2.62 ppm and 2.28 ppm exceeded the standard
limit. Urine testes showed only one patient from each area that had zinc in their bodies, and
that will be explained in the following discussion and conclusions section.
The concentration of cobalt fell in all areas within the standard limit (1.00 ppm), which varies from 0.39 ppm to 0.01 ppm (Figure 8). Almost all the manganese concentration fell within the standard limit (0.05 ppm), which varied from 0.05 ppm to 0.00 ppm from all areas except one sample from Heliopolice with 0.1 ppm (Figure 9). The concentration of chromium fell within the standard limit (0.05 ppm)in almost all areas except in El-Salam area, which reached up to 0.51 ppm (Figure 10).