ارزیابی خطر و شدت آلودگی خاک ناشی از آلودگی فلزات سنگین در خاک‌های اطراف محل دفن زباله‌های شهری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی سبزوار، سبزوار، ایران

2 استادیار، گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی سبزوار، سبزوار، ایران

3 کارشناسی ارشد پرستاری، گروه پرستاری، دانشکده پرستاری، دانشگاه آزاد اسلامی، سبزوار، ایران

چکیده

زمینه و هدف: در محل‌های دفن مهندسی شده هم نمی‌توان از تولید شیرابه جلوگیری کرد که حاوی انواع مختلفی از فلزات سنگین است. بنابراین محل‌دفن زباله یکی از منابع اصلی افزایش غلظت فلزات سنگین در خاک است. هدف از انجام این مطالعه، بررسی شدت آلودگی خاک‌های اطراف محل‌دفن زباله سبزوار به فلزات سنگین و تهیه نقشه آلودگی خاک به فلزات سنگین بود.

مواد و روش‌ها: نمونه‌های خاک‌های سطحی و عمقی در 18 ایستگاه با توجه به نوع خاک و فاصله از محل ‌دفن شهر سبزوار جمع‌آوری گردید. غلظت فلزات سنگین آرسنیک، روی، سرب، کروم، مس، جیوه و کادمیوم به‌وسیله دستگاه ICP-OES آنالیز گردید. شدت آلودگی خاک با استفاده از شاخص‌های زمین انباشتگی (Igeo) و مجموع ریسک اکولوژیکی (RI) ارزیابی شد.

یافته‌ها: میانگین غلظت آرسنیک، روی، سرب، کروم و مس در خاک سطحی به ترتیب 01/6، 04/41، 31/6، 77/26 و 45/31 بر حسب mg/kg و جیوه و کادمیوم به ترتیب 79/60 و 60/61 بر حسب µg/kg بود. اما میانگین غلظت آرسنیک، روی، سرب، کروم و مس در خاک در عمقی به ترتیب 75/5، 33/38، 25/6، 68/22و 04/31 بر حسب mg/kg و جیوه و کادمیوم به ترتیب 57/66 و 98/59 بر حسب µg/kg بود که مقدار همگی نسبت به مقادیر پس‌زمینه طبیعی بیشتر است.

نتیجه‌گیری: بر اساس برآورد شاخص‌هایIgeo و RI برای فلزات سنگین آرسنیک، سرب، روی، کروم و مس در خاک عدم آلودگی ولی برای جیوه و کادمیوم آلودگی شدید را نشان داد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of Heavy Metals in the Soil around Municipal Waste Landfill

نویسندگان [English]

  • Mohammad Hasan Kowsari 1
  • MohammadHossein Saghi 2
  • ayoob rastegar 2
  • Somayeh Sotude 3
1 Student Research Committee, Sabzevar University of Medical Sciences, Sabzevar, Iran
2 Department of Environmental Health Engineering, Faculty of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran.
3 Msc of Nursing, Nursing Department Sabzevar Branch, Islamic Azad University, Sabzevar, Iran
چکیده [English]

Background: Even in engineered landfills in developed countries, leachate production cannot be avoided and it contains different types of heavy metals. Therefore, landfills are one of the main sources of increased concentrations of heavy metals in the soil. The purpose of this study was to evaluate the severity of contamination of soils around Sabzevar landfill with heavy metals and to prepare a soil contamination map with heavy metals.

Methods: Samples of surface and deep soils were collected in 18 stations according to the type of soil and distance from landfill Sabzevar. The concentrations of heavy metals Arsenic, Zinc, Lead, Chromium, Copper, Mercury and Cadmium were analyzed by ICP-OES. The intensity of soil contamination was assessed using Index Geoaccumulation Potential ecological risk index.

Results: The mean concentrations of Arsenic, Zinc, Lead, Chromium and Copper in surface soil, respectively are, 6.013, 41.04, 6.31, 26.77 and 31.45 mg/kg of Mercury and Cadmium, respectively, 60.79 and 61.60 μg/kg, respectively. But the mean concentration of Arsenic, Zinc, Lead, Chromium and Copper in depth soil, respectively are, 5.75, 38.33, 6.25, 22.68 and 31.04 mg/kg, Mercury and Cadmium, respectively, 66.57 and 59.98 μg/kg, the value of all proportion to Natural background values are higher.

Conclusion: Based on estimates of Igeo and RI indices for heavy metals Arsenic, Lead, Zinc, Chromium and Copper in the soil showed no contamination but for Mercury and Cadmium showed severe contamination.

کلیدواژه‌ها [English]

  • Soil Pollution
  • heavy metals
  • Landfill
  1. Eskandari M, Homaee M, Mahmoodi S, Pazira E, Van Genuchten MT. Optimizing landfill site selection by using land classification maps. Environmental Science and Pollution Research. 2015;22(10):7754-65. (Persian)
  2. Boateng TK, Opoku F, Akoto O. Heavy metal contamination assessment of groundwater quality: a case study of Oti landfill site, Kumasi. Applied Water Science. 2019;9(2):33.
  3. Popego T, Dikinya O, Gaobotse G. Assessment of the concentration of heavy metals associated with landfill leachate in Gamodubu soils in the Kweneng District, Botswana. African Journal of Soil Science. 2019;7(1):523-9.
  4. Artiningsih A, Zubair H, Imran A, Widodo S, editors. Contamination and characteristic of Ni and Cr metal on top soil from Antang landfill, Makassar City, South Sulawesi Province, Indonesia. IOP Conference Series: Earth and Environmental Science; 2019; 175(1):012021.
  5. Forti JC, Lima PG, Reis AR, dos Santos FA, Braga SS. Analysis of heavy metals and aromatics compounds in soil layers of a sanitary landfill. Environmental Quality Management. 2019;28(3):123-30 .
  6. Ravankhah N, Mirzaei R, S M. Evaluation of Geoaccumulation Index, Contamination Factor, and Principal Component Analysis for Estimating Soil Contamination. Iranian Journal of Health & Environment. 2015;8(3):345-56 (Persian)
  7. Hosseinzade F, Moomeni AA, Bagheri R. Assessment of heavy metals pollution in soils around Behshahr landfill. New Findings In Applied Geology 2018;12(24):77-88. (Persian)
  8. Saheed I, Azeez S, Jimoh A, Obaro V, Adepoju S. Assessment of Some Heavy Metals Concentration in Soil and Groundwater Around Refuse Dumpsite in Ibadan Metopolis, Nigeria. Nigerian Journal of Technology. 2020;39(1):301-5 .
  9. Yang X, Zhou M, Cang L, Ji Q, Xie J. Enhanced Electrokinetic Remediation of Heavy-Metals Contaminated Soil in presence tetrasodium N, N-bis (carboxymethyl) glutamic acid (GLDA) as chelator. Int J Electrochem Sci. 2020;15:696-709 .
  10. Alam R, Ahmed Z, Howladar MF. Evaluation of heavy metal contamination in water, soil and plant around the open landfill site Mogla Bazar in Sylhet, Bangladesh. Groundwater for Sustainable Development. 2020;10:100311. .
  11. Rezaei A, Hassani H, Mousavi SBF, Hassani S, Jabbari N. Assessment of Heavy Metals Contamination in Surface Soils in Meiduk Copper Mine Area, Se Iran. Earth Sciences Malaysia (ESMY). 2019;3(2):01-8 (Persian) .
  12. Nezhad MTK, Tabatabaii SM, Gholami A. Geochemical assessment of steel smelter-impacted urban soils, Ahvaz, Iran. Journal of Geochemical Exploration. 2015;152:91-109. (Persian)
  13. Zaheri N, Khosravi Y, Mokhtari MAA, Zamani A. Distribution pattern of the heavy metals in stream sediments of the Baycheh-Bagh area, northwest of Zanjan. Journal Of Stratigraphy and Sedimentology Researches. 2019;35(2):135-50. (Persian)
  14. Mazhari SA. The investigation of surface soil geochemistry and mineralogical role in the heavy metal bioavailability of Sabzevar area. Iranian Journal of Crystallography and Mineralogy. 2017;25(2):279-94 (Persian)
  15. Mazhari SA. Distribution of platinum-group elements (PGE) in chromitites of Sabzevar, NE of Iran. Iranian Journal of Crystallography and Mineralogy. 2019;27(1):109-22
  16. Sarempour M, Behbahaninia A, Zareimahmoodabadi H. Evaluating soil contamination with heavy metals (nickel and cadmium) and developing a management strategy in a drilling cutting dump site in Azadegan Plain, Khuzestan province. Journal of Environmental Science and Technology. 2018;20(3):97-104 (Persian)
  17. Bazzi F, Rezaei MR, Sayadi Anari MH. Assessing Soil Pollution with Heavy Metals using Contamination Factor Index at Zahedan Municipal Landfill. Environment and Water Engineering. 2017;3(2):170-80 (Persian)
  18. Zhaoyong Z, Xiaodong Y, Simay Z, Mohammed A. Health risk evaluation of heavy metals in green land soils from urban parks in Urumqi, northwest China. Environmental Science and Pollution Research. 2018;25(5):4459-73. (Persian)
  19. Gąsiorek M, Kowalska J, Mazurek R, Pająk M. Comprehensive assessment of heavy metal pollution in topsoil of historical urban park on an example of the Planty Park in Krakow (Poland). Chemosphere. 2017;179:148-58
  20. Mukhopadhyay S, Chakraborty S, Bhadoria P, Li B, Weindorf DC. Assessment of heavy metal and soil organic carbon by portable X-ray fluorescence spectrometry and NixPro™ sensor in landfill soils of India. Geoderma Regional. 2020; 20:e00249.
  21. Jia B, He S, Huang Z, Liao J, Zhang J, editors. Heavy Metals Pollution Characteristics and Ecological Risk Assessment of the Sediments of Anrongjing River in Taizhou City. IOP Conference Series: Earth and Environmental Science; 2020: IOP Publishing.
  22. Zang J, Wang W, Wang Z, Zheng L, Xie X. Field Test on Electro-Osmosis in a Heavy Metal Contaminated Soil: Electrokinetic Remediation and Reinforcement of the soil. Int J Electrochem Sci. 2020;54:1230-41
  23. Egwu OC, Casmir UC, Victor UC, & et al. Evaluation and Ecological Risk Assessment of Selected Heavy Metal Pollution of Soils and Amaranthus cruentus and Telfairia occidentalis Grown Around Dump Site in Chanchaga Minna, Niger State, Nigeria. Asian Journal of Environment & Ecology. 2019;10(2):1-16
  24. Thongyuan S, Khantamoon T, Aendo P, & et al. Ecological and health risk assessment, carcinogenic and non-carcinogenic effects of heavy metals contamination in the soil from municipal solid waste landfill in Central, Thailand. Human and Ecological Risk Assessment: An International Journal. 2020;27(2):1-22
  25. Jafari K, Hafezi Moghadas N, mazlomi AR, Ghezi A. Investigation of heavy metals contaminant in downstream landfilling site of Ardebil municipal waste. Journal of Environmental Studies. 2016;42(3):489-506 (Persian)
  26. Yousefi Z, Gharanjik AM, Amanpour B, Adeli M. Selection of Solid Waste Landfill Site Using Remote Sensing and Geographical Information System: A Case Study in Gonbad-e Qabus. Journal of Mazandaran University of Medical Sciences (JMUMS). 2013 ;22(1):114-105 (Persian)
  27. Sistani N, Moeinaddini M, Khorasani N, Hamidian A, Ali-Taleshi M, Azimi Yancheshmeh R. Heavy metal pollution in soils nearby Kerman steel industry: metal richness and degree of contamination assessment. Iranian Journal of Health and Environment. 2017;10(1):75-86 (Persian)

دوره 29، شماره 1
فروردین و اردیبهشت 1401
صفحه 65-76
  • تاریخ دریافت: 08 بهمن 1399
  • تاریخ بازنگری: 17 اسفند 1399
  • تاریخ پذیرش: 18 اسفند 1399
  • تاریخ اولین انتشار: 24 بهمن 1400