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Assessment of Heavy Metals Contamination of Agricultural Field around Brick Kilns in Joypurhat District, Bangladesh

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Abstract (2. Language): 
The present work assessed the heavy metal contamination of agricultural field around two selected brick kilns, where brick kiln is in the center of agricultural land using two soil pollution indices such as geo accumulation index (Igeo) and single element pollution index (SEPI). For conducting this experiment, a total of 10 soil samples and 13 plant samples were collected from the soil surface which was almost 50-200 m away from the kilns. During the study, soil properties such as pH, EC, organic carbon content and organic matter was also determined. The heavy metal (Pb, Cr, Ni, Zn and Cu) concentrations were determined using Atomic Absorption Spectrophotometer. Concentrations of Pb, Cr, Ni, Zn and Cu were found to be below detection limit to 7.75, 10.0 to 64.94, 4.62 to 16.39, 0.20 to 3.37 and 2.69 to 9.63 ppm respectively. The results of single element pollution index (SEPI) and geo-accumulation index (Igeo) of soils of studied area indicated that the soils are unpolluted with regards to Pb, Cr, Ni, Zn and Cu. Interestingly, it was found that there is a prominent difference in concentration between plant tissues and soils of investigated area. Plant tissue concentration of Pb, Cr, Ni, Zn and Cu were found to be 6.0 to 62, 19.1 to 113.8, 21 to 75.6, 16.59 to 78.55 and 1.0 to 71.7 ppm respectively. Environmental condition, plants species and soil properties are some factors might be responsible for such differences.
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International Journal of Science and Engineering Investigations, Volume 6, Issue 70, November 2017 105
www.IJSEI.com Paper ID: 67017-15
ISSN: 2251-8843
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