Heavy Metals in Some Vegetables, Soil and Water in Industrial and Non-Industrial Zones of Central Region of Iran

Document Type : Research Article-en

Authors

Ashkan Nasresfahani

Nafiseh Zamindar

Saeed Paidari

Haniyeh Rezaee Barzani

Department of food science and technology, Faculty of Agriculture, Water, Food, and Nutraceuticals, Isf.C., Islamic Azad University, Isfahan, Iran

https://doi.org/10.22067/ifstrj.2025.94093.1451

Abstract

The presence of heavy metals in water, soil, and agricultural products is considered a significant threat to human health. This study aimed to evaluate different heavy metals such as Mercury (Hg), Lead (Pb), Arsenic (As), Cadmium (Cd), Zinc (Zn) and Cobalt (Co), in some vegetable varieties like cucumber, tomato and eggplant and also in the soil and water resources, in greenhouses around the mega industrial zones vicinity (1-10 Km) and comparing it with a greenhouse located in suburb of Isfahan, Iran. Measurement of heavy metals was carried out using ICP-OES in replicate. Concentrations of heavy metals in soil varied by region and generally following the descending pattern: Co > Pb > As > Hg > Zn > Cd. Heavy metals transfer factor were in the order of Cd > Hg > Zn > Pb > Co > As. According to the results, the mega industrial zones of Isfahan province showed a hazardous situation, and notably, heavy metal levels in the suburban region of Isfahan exceeded the health risk index (HRI). Based on the findings, it is recommended that producers adopt regular monitoring of irrigation and soil quality, apply phytoremediation and organic soil amendments to reduce heavy metal uptake, and select low-accumulating crop varieties in order to minimize health risks and ensure sustainable greenhouse production near industrial zones.

Keywords

Heavy metals pollution

ICP-OES

Health risk assessment

Industrial zones

Vegetable

Subjects

• Food Chemistry

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Authors retain the copyright. This is an open access article distributed under Creative Commons Attribution 4.0 International License (CC BY 4.0)

References

1. Al-Hossainy, A.F., Mohamed, A.E., Hassan, F.S.M., & Abd Allah, M.M. (2017). Determination of cadmium and lead in perch fish samples by differential pulse anodic stripping voltammetry and furnace atomic absorption spectrometry. Arabian Journal of Chemistry, 10, S347-S354. https://doi.org/https://doi.org/10.1016/j.arabjc.2012.09.005
2. Beccaloni, E., Vanni, F., Beccaloni, M., & Carere, M. (2013). Concentrations of arsenic, cadmium, lead and zinc in homegrown vegetables and fruits: Estimated intake by population in an industrialized area of Sardinia, Italy. Microchemical Journal, 107, 190–195. https://doi.org/10.1016/j.microc.2012.06.012
3. Bi, C., Zhou, Y., Chen, Z., Jia, J., & Bao, X. (2018). Heavy metals and lead isotopes in soils, road dust and leafy vegetables and health risks via vegetable consumption in the industrial areas of Shanghai, China. Science of the Total Environment, 619–620, 1349–1357. https://doi.org/10.1016/j.scitotenv.2017.11.177
4. Briffa, J., Sinagra, E., & Blundell, R. (2020). Heavy metal pollution in the environment and their toxicological effects on humans. Heliyon, 6(9), e04691. https://doi.org/10.1016/j.heliyon.2020.e04691
5. Cai, L., Xu, Z., Sun, G.-X., Chen, Z., Bao, P., He, M., Dou, L., Chen, L., & Zhou, Y. (2014). Multivariate and geostatistical analyses of the spatial distribution and source of arsenic and heavy metals in the agricultural soils in Shunde, Southeast China. Journal of Geochemical Exploration, 148. https://doi.org/10.1016/j.gexplo.2014.09.010
6. Codex Alimentarius, C. (2016). General Standard for Contaminants and Toxins in Food and Feed. CODEX STAN 193–1995. In Codex Alimentarius Commission. https://doi.org/10.1093/law:epil/9780199231690/e1857
7. Council of the European Union. (2006). Commission Regulation (EC) No. 1881/2006 setting maximum levels for certain contaminants in foodstuffs. Official Journal of the European Union, L 364, 5–24. http://data.europa.eu/eli/reg/2006/1881/oj/eng
8. Ferri, R., Hashim, D., Smith, D.R., Guazzetti, S., Donna, F., Ferretti, E., Curatolo, M., Moneta, C., Beone, G.M., & Lucchini, R.G. (2015). Metal contamination of home garden soils and cultivated vegetables in the province of Brescia, Italy: implications for human exposure. Science of the Total Environment, 518, 507-517. https://doi.org/10.1016/j.scitotenv.2015.02.072
9. Gebrekidan, A., Weldegebriel, Y., Hadera, A., & Van der Bruggen, B. (2013). Toxicological assessment of heavy metals accumulated in vegetables and fruits grown in Ginfel river near Sheba Tannery, Tigray, Northern Ethiopia. Ecotoxicology and Environmental Safety, 95, 171-178. https://doi.org/https://doi.org/10.1016/j.ecoenv.2013.05.035
10. Gharib, A.G., Fatoorechian, S., & Ahmadiniar, A. (2003). Determination of essential major and trace elements in daily diets by comparative methodologies and alterations. Journal of Trace Elements in Medicine and Biology, 1, 43–53.
11. Iran National Standardization Organization. (n.d.). National Standard No. 12968: Food and feed—Maximum tolerance of heavy metals and test methods (In Persian). https://www.inso.gov.ir
12. Järup, L. (2003). Hazards of heavy metal contamination. British Medical Bulletin, 68(1), 167-182. https://doi.org/10.1093/bmb/ldg032
13. Kakouei Dinaki, F., Cheraghi, M., Lorestani, B., Sobhan Ardakani, S., & Chamani, A. (2021). Investigating the potential of native plants in phytoremediation of heavy metals and nutrients in the Latian and Lar Dam reservoirs. Iran-Water Resources Research, 17(2), 130–141. https://doi.org/10.1007/s00128-023-03823-4
14. Khan, K., Lu, Y., Khan, H., Ishtiaq, M., Khan, S., Waqas, M., Wei, L., & Wang, T. (2013). Heavy metals in agricultural soils and crops and their health risks in Swat District, Northern Pakistan. Food Chem Toxicol, 58, 449-458. https://doi.org/10.1016/j.fct.2013.05.014
15. Khan, S., Cao, Q., Zheng, Y.M., Huang, Y.Z., & Zhu, Y.G. (2008). Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China. Environmental Pollution, 152(3), 686-692. https://doi.org/https://doi.org/10.1016/j.envpol.2007.06.056
16. Khillare, P.S., Jyethi, D.S., & Sarkar, S. (2012). Health risk assessment of polycyclic aromatic hydrocarbons and heavy metals via dietary intake of vegetables grown in the vicinity of thermal power plants. Food Chemistry Toxicology, 50(5), 1642-1652. https://doi.org/10.1016/j.fct.2012.01.032
17. Nabulo, G., Black, C.R., & Young, S.D. (2011). Trace metal uptake by tropical vegetables grown on soil amended with urban sewage sludge. Environment Pollution, 159(2), 368-376. https://doi.org/10.1016/j.envpol.2010.11.007
18. Noli, F., & Tsamos, P. (2016). Concentration of heavy metals and trace elements in soils, waters and vegetables and assessment of health risk in the vicinity of a lignite-fired power plant. Science Total Environment, 563-564, 377-385. https://doi.org/10.1016/j.scitotenv.2016.04.098
19. Radkhah, A.R., Eagderi, S., & Atash Afrazah, S. (2025). Efficiency of different adsorbents in removing heavy metals from municipal wastewater: A review study. Journal of Water and Sustainable Development, 11(4), 63–82. https://doi.org/10.22067/jwsd.v11i4.2407-1346
20. Radkhah, A.R., Eagderi, S., & Sadeghinejad Masouleh, E. (2022). Accumulation of heavy metals in fish: A serious threat to food security and public health [Review]. Journal of Marine Medicine, 3(4), 236-245. https://doi.org/10.30491/3.4.236
21. Rezaei Malidareh, R., Shokrzadeh, M., Khasi, B., Rouhi, S., & Zaboli, F. (2016). Evaluation and comparison of the effect of different washing and cooking processes on residual heavy metals (lead and cadmium) in Tarom rice cultivated in the paddy fields of Qaemshahr, northern Iran. Journal of Research in Environmental Health, 2(1), 52–59. https://doi.org/10.22038/jreh.2016.7089
22. Ranjbar, G., Najafpoor, A.A., & Dehghan, A. (2020). Survey of heavy metals (lead, cadmium, arsenic, mercury) in vegetables of farmlands around Kashafrud River in Mashhad in spring and summer, 2018. Journal of Research in Environmental Health, 6(2), 107–116. https://sid.ir/paper/362884/en
23. Sadegh, N., Rezaei, M.R., & Sayadi Anari, M.H. (2019). Investigation of heavy metals pollution lead, chromium and cadmium under different land use at soil and saffron plant (Case study: Ferdows). Journal of Saffron Research, 7(1), 1-12. https://doi.org/10.22077/jsr.2018.1762.1068
24. Sabour-Moghaddam, N. (2024). Investigating the effect of soil contamination with heavy metals on the growth and development of wheat seedlings in greenhouse conditions [Research]. Genetic Engineering and Biosafety Journal, 13(1), 42-50. https://doi.org/10.61186/gebsj.13.1.6
25. Singh, A., Sharma, R., Agrawal, M., & Marshall, F. (2010). Risk assessment of heavy metal toxicity through contaminated vegetables from waste water irrigated area of Varanasi, India. Tropical Ecology, 51, 375-387.
26. Ur Rehman, Z., Khan, S., Tahir Shah, M., Brusseau, M.L., Akbar Khan, S., & Mainhagu, J. (2018). Transfer of heavy metals from soils to vegetables and associated human health risks at selected sites in Pakistan. Pedosphere, 28(4), 666-679. https://doi.org/10.1016/s1002-0160(17)60440-5
27. Voutsa, D., Grimanis, A., & Samara, C. (1996). Trace elements in vegetables grown in an industrial area in relation to soil and air particulate matter. Environmental Pollution, 94(3), 325-335. https://doi.org/https://doi.org/10.1016/S0269-7491(96)00088-7
28. Yang, L., Huang, B., Hu, W., Chen, Y., Mao, M., & Yao, L. (2013). The impact of greenhouse vegetable farming duration and soil types on phytoavailability of heavy metals and their health risk in eastern China. Chemosphere, 103. https://doi.org/10.1016/j.chemosphere.2013.11.047