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Information Journal Paper

Title

CONTAMINATION OF SOIL, WATER, PLANT AND DUST BY ZINC, LEAD AND CADMIUM IN SOUTHWEST ISFAHAN

Pages

  441-452

Keywords

Abstract

 Introduction Due to MINING, considerable amounts of heavy metal bearing mineral sare scattered in theatmosphere in the form of dust and make the surrounding air, water and soils polluted.Runoff water movingfromthe mountainstowardsplains may also transport heavy metals from mines to the soils.One type of POLLUTIONs is contamination with heavy metals. The purpose of the present research has been to investigate the effect of heavymetals of mine on soil, water, plant and dust POLLUTION.Materials and Methods: Gushfil mine is located 3 kilometers southwest of Sepahanshahr, Isfahan. Soilprofiles were dug 500 meters apart along three parallel transects, between east of Sepahanshahr and Gushfilmine. The profiles were described and samples were collected from their horizons. Ore, wells, plant and dustwere sampled as well. Total concentrations of LEAD, ZINC and CADMIUM were measured in the samples. To find theorigin of polluted dust and soil, LEAD isotopes contents in the samples were measured and regressionalrelationships between the ratios of these contents were investigated.Results and Discussion: Sepahanshahr soils are not contaminated by ZINC, LEAD and CADMIUM, but within adistance of one to two kilometers from the Gushfil mine, the soils are polluted by ZINC and LEAD. CADMIUMcontamination was not observed in the studied soils. In all of the soils, the heavy metals content varies downwards irregularly. The reason for this variation trend is that the studied soils are alluvial. In differentperiods of time, alluvium parent materials have been transported by runoff water from the LEAD and ZINC minestowards the alluvial piedmont plain. The studied heavy metals have been distributed irregularly in differenthorizons of the soils that have been formed in these parent materials. LEAD and CADMIUM concentrations ofdrinking water in the studied area are much higher than the maximum amount allowed by the World HealthOrganization. CADMIUM content in all trees of the Sepahanshahr urban park and in alfalfa, LEAD content in olivetrees and LEAD and CADMIUM concentrations in Holly hock (Althaea officinalis), Spurge (Euphorbiarigida) andRhizome (Acanthe phylum bracteatum) are higher than dietaryallowance. Significant correlation between heavymetal concentrations reduction in dust samples and increase of distance from the mine expresses thatcontaminant heavy metals enter the atmosphere due to mine explosions. In dolomitic sandstone rich in sphalerite mineral, the total amounts of LEAD and ZINC are maximum. The maximum amount of CADMIUM and too much LEADand ZINC were observed in a shale fragment, sampled from a location of a fault in the mine. Contents of the threemetals were less in black and green shales, compared with the other samples. In dolomitic sandstone rich ingallon mineral, the amounts of the three metals are high and its LEAD content is maximum with respect to otherrocks excluding dolomitic sandstone rich in sphalerite mineral. Significant correlation between ratios of LEADisotopes contents of the rocks, soil and dust showed that the soils of the alluvial piedmont plain located at thefootslope of the western mountains of the studied area have formed in alluvium parent materials originated fromwestern mountains. The studied heavy metals have been transported together with these alluviums from the minetowards the alluvial piedmont plain. The other origin of these metals is the dust which is produced during theGushfil mine explosions. This dust is translocated towards the Sepahanshahr and makes the surroundingenvironment of the mine polluted.Conclusions: Origin of ZINC, LEAD and CADMIUM in soil, water, plant and dust in the studied area is rocks ofGushfil mine. Transportation of these metals from the mine towards the environment can be explained by twomechanisms: 1) together with runoff water flowing from the western mountains towards the alluvial piedmontplain and 2) in the form of dust which originates from the mine and moves eastwards. The soils are notcontaminated with CADMIUM. With increase of distance from the mine, contamination of LEAD and ZINC decreasesin soil and dust in such a way that in the Sepahanshahr soils, POLLUTION of these metals is not observed. The soilslocated within a distance of 1 to 2 kilometers from the Gushfil mine are contaminated with LEAD and ZINC. Wateris polluted with LEAD and CADMIUM and the CADMIUM content of the plants is higher than dietaryallowance.

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    APA: Copy

    ESMAEILPOURFARD, N., GIVI, J., & DAVOUDIAN, A.. (2015). CONTAMINATION OF SOIL, WATER, PLANT AND DUST BY ZINC, LEAD AND CADMIUM IN SOUTHWEST ISFAHAN. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 29(2), 441-452. SID. https://sid.ir/paper/141072/en

    Vancouver: Copy

    ESMAEILPOURFARD N., GIVI J., DAVOUDIAN A.. CONTAMINATION OF SOIL, WATER, PLANT AND DUST BY ZINC, LEAD AND CADMIUM IN SOUTHWEST ISFAHAN. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2015;29(2):441-452. Available from: https://sid.ir/paper/141072/en

    IEEE: Copy

    N. ESMAEILPOURFARD, J. GIVI, and A. DAVOUDIAN, “CONTAMINATION OF SOIL, WATER, PLANT AND DUST BY ZINC, LEAD AND CADMIUM IN SOUTHWEST ISFAHAN,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 29, no. 2, pp. 441–452, 2015, [Online]. Available: https://sid.ir/paper/141072/en

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