CONCENTRATION OF SOME HEAVY METALS IN SOILS AND OLIVE TREES AS INDICATOR FOR ENVIRONMENTAL POLLUTION OF HEAVY TRAFFIC ROADS IN EGYPT | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 4, Volume 31, Issue 10, October 2006, Pages 6799-6808 PDF (148.4 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2006.224721 | ||
| Authors | ||
| M. A. Amer1; Afaf M. A. Yousif2 | ||
| 1Soil, Water and Environment Research Institute, A. R. c. | ||
| 2Horticulture Research institute. A. R. c. | ||
| Abstract | ||
| Soil and olive trees samples were collected from three sites varied in their traffic density levels. Site (A) between km 45-47 on the major Alexandria-Cairo road was chosen and representing the high traffic density sample. The second location (B). olive trees farm located close to the first site, about 50-100 meters to the west of the major road. The third location (C). olive trees farm. Nubaria Horticulture Research Station, 17 km to the east of the first site and serve as the pollution free reference point being forfrom the traffic density. Roots. leaves and fruits were analyzed for heavy metals contents before and after washing in addition to soil samples to distinguish the effect of road deposits and dust precipitation on their content of these heavy metals. Analysies of samples were conducted at the Soil Salinity Lab. Agric. Research Center. Alexandria. using Atomic Absorption Spectrophotometry. The data showed high correlation between the analyzed elements Pb. Zn Cu and Fe in each season and traffic density especially in roots and leaves of olive trees. Lead was the highest element in the organs of the olive tree compared with the other elements. Its mean concentration was 27.42, 19.5. and 37 pgig dry weights in roots. leaves and fruits. respectively. While Cd showed the lowest concentration and was not affected by traffic density, the micronutn‘ents Zn. Cu. and Fe showed adequate concentration. Washing the samples of leaves and fruits showed significant effect on decreasing the concentration of Pb. Zn. Cu and Fe. being reduced by a percentage ranged from 1 to 41%. indicating the effect of environmental pollution on precipitation of such elements on the surface of leaves and fruits. Thus. we can conclud that washing is necessary for consuming such fruits before using to avoid hazards of toxicity. At the same time. concentration of these elements in the soil showed that they were low and did not reach the hazard level. | ||
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