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:: Volume 6, Issue 3 (Summer 2019) ::
Environ. health eng. manag. 2019, 6(3): 191-202 Back to browse issues page
Assessment of heavy metals concentrations in the soil of Mongla industrial area, Bangladesh
Md. Abu Rayhan Khan , Mosummath Hosna Ara , Palash Kumar Dhar
corresponding author: Chemistry Discipline, Science Engineering and Technology School, Khulna University, Khulna, Bangladesh , hosnaara1@gmail.com
Abstract:   (476 Views)
Background: Contamination of soil with heavy metals is an alarming issue around the world. Therefore, this study aimed to assess the contamination status of heavy metals in the soil of Mongla industrial area, Bangladesh.
Methods: Soil samples were randomly collected from 20 sites and digested by wet digestion method. The concentrations of heavy metals (Mn, Fe, Cu, Zn, Cd, and Pb) were determined using atomic absorption spectrophotometer (AAS). The quality of soil was assessed based on the contamination factor (CF),
geoaccumulation index (Igeo), enrichment factor (EF), and ecological risk index factor (ERIF) analyses.
Results: The average concentrations of Mn, Fe, Cu, Zn, Cd, and Pb were obtained to be 258.08 ± 51.61, 3736.90 ± 322.17, 19.55 ± 6.49, 66.76 ± 18.32, 0.59 ± 0.13, and 10.40 ± 1.49 mg kg-1, respectively, which were below the permissible limit. The highest value of CF (0.74 ± 0.16), Igeo (0.35 ± 0.34), EF (24.86 ± 6.27), and PERIF (22.11 ± 4.81) was observed for Cd. The pollution of CF, Igeo, EF, and ERIF was classified as very severely polluted, unpolluted to moderately polluted, strongly to extremely polluted, and slightly polluted, respectively, with these heavy metals due to anthropogenic activities. One-way ANOVA indicated a significant difference between Zn and Cd concentrations (P < 0.05), whereas Pearson correlation showed a positive correlation between Zn-Pb (P = 0.01) and Fe-Zn (P = 0.05).
Conclusion: There are different classes of contamination with heavy metals in the study area. Therefore, necessary steps should be taken and people’s awareness of the soil pollution should be raised.
Keywords: Soil pollution, Heavy metals, Contamination factor, Geoaccumulation index, Enrichment factor, Ecological risk index factor
eprint link: http://eprints.kmu.ac.ir/id/eprint/31543
Full-Text [PDF 982 kb]   (168 Downloads)    
Type of Study: Applicable | Subject: General
Received: 2019/09/15 | Accepted: 2019/09/15 | Published: 2019/09/15
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Rayhan Khan M A, Hosna Ara M, Kumar Dhar P. Assessment of heavy metals concentrations in the soil of Mongla industrial area, Bangladesh. Environ. health eng. manag.. 2019; 6 (3) :191-202
URL: http://ehemj.com/article-1-524-en.html


Volume 6, Issue 3 (Summer 2019) Back to browse issues page
مجله مدیریت و مهندسی بهداشت محیط Environmental Health Engineering And Management Journal
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