ESTIMATION OF HEAVY METALS LEVELS IN NILE RIVER WATER, EGYPT | ||||
| Journal of Biological Chemistry and Environmental Sciences | ||||
| Volume 14, Issue 1, March 2019, Page 355-368 PDF (356.57 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/bces.2019.425759 | ||||
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| Abstract | ||||
| The aim of this study is to determine the heavy metals levels (Cd, Cr, Cu, Mg, Mn, Ni, Pb and Zn), in water samples collected during the four seasons from different sites along the river Nile at Shubra Khait region, El-Beheira Governorate and Kafr El-Zayat region, El-Gharbia Governorate. The determination of metals levels carried out by atomic absorption spectrometry. The recovery was 86.14±1.58% for Cd, 81.75±0.97% for Cr, 92.27±1.59% for Cu, 88.04±3.14 % for Fe, 82.15±1.58% for Mg, 81.43±1.82% for Mn, 78.61±2.31% for Ni, 89.10±1.98% for Pb and 85.24±3.17 % for Zn. The mean concentrations of the heavy metals in water samples in two sites at the Rosetta branch along the Nile River at Kafr El-zayat were ranged between 0.15±1.05-0.99±1.02 μg/ml for Cd, ND-0.06±0.18 μg/ml for Cr, 0.14±1.39-0.24±1.51 μg/ml for Cu, 0.41±0.51- 5.84±0.39 μg/ml for Fe, 4.28±1.52-6.29±1.06 μg/ml for Mg, ND- 1.12±1.45 μg/ml for Mn, 0.16±1.24 -1.65±0.68μg/ml for Ni, ND- 0.35±1.32 μg/ml for Pb and 0.18±0.65-0.64 ±1.49 μg/ml for Zn during all seasons for the two sites. Also, the mean concentrations of the heavy metals in water samples collected from Nile River at the Rosetta branch from two sites along the river at Shubra Khait region, El-Beheira Governorate. ranged between 0.12±3.00-0.93±2.14 μg/ml and the levels of Cr, Cu, Fe, Mg, Mn, Ni, Pb and Zn ranged between 0.04±1.11-0.13±1.97, 0.13±2.42-0.25±2.34, 1.14±1.93-5.61±1.99, ESTIMATION OF HEAVY METALS LEVELS356 5.39±1.05-6.22±1.55,ND-0.16±1.95, 0.14±2.93-2.05±2.00, 0.01±2.06- 0.07±2.39 and 0.15±1.47-0.55±1.72 μg/ml, respectively. Also, all water samples in El-Beheira and El-Gharbia governorates had levels of Cd, Ni were higher than the maximum permissible levels. On the other hand, according to the different organizations such as, WHO, EU, ECS and EPA, the permissibe levels are differentiate. For example, according to Egyptian Chemical Standard all water samples had levels of Cr exceeded the maximum permissible levels except water samples which collected during summer season from the first site of Kafr El-Zayat region, but according to other organization some samples below the permissible limits and others excceded the limits. Also, water samples had Fe levels higher than the permissible levels of WHO. While according to the permissible levels of Fe from Egyptian Chemical Standard all samples collected from the two sites at Shubra Khait region were had higher concentrations of Fe excceded the permissible limits. While samples collected from Kafr El-Zayat region at the first site had Fe concentration excceded the permissible levels during autumn and winter seasons and during summer and autumn seasons at the second site. According to the permissible levels of Mn in water recommended by WHO samples were collected during spring and autumn seasons in the first site in Kafr El-Zayat region were higher than the permissible levels. While water samples had levels of Pb exceeded the permissible levels according to WHO. All water samples which collected during all seasons in the study were had levels of Cu below the permissible levels according to WHO, Eropian Union and Egyptian Chemical Standard and EPA. Also, all water samples which collected during all seasons were had levels of Zn below the permissible levels WHO, EPA and Egyptian Chemical Standard. According to WHO the permissible levels all water samples contain Mg concentrations below the permissible levels. | ||||
| Keywords | ||||
| Key words: atomic absorption spectrometry; ECS; Egyptian Chemical Standard; EPA; WHO | ||||
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