Heavy metal accumulation in vegetable species and health risk assessment in Serbia
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Continuous monitoring of heavy metal content in vegetables is of high priority for population nutrition control, as well as risk assessment for human health. The chemical composition of plants is a reliable indicator of their contamination by hazardous substances accumulated in the environment as a consequence of inadequately applied agro-technology. The main goal of this study was to examine the quality of vegetables that reach consumer markets as a function of growth location. Samples of 11 of the most common vegetable species used in the human diet were collected during a 4-year survey. Vegetables originated from local farm producers who cultivated them at different locations in Vojvodina Province, Serbia. Many vegetable samples contained disturbingly high levels of the investigated metals: cadmium, lead, nickel, and chromium. The plant species with the highest Cd accumulation was spinach, where Cd leaves exceeded the maximum permissible concentrations (MPCs) in more than half of the analyzed samples from different localities (54%). Pb concentrations in spinach were also higher than MPC values (according to Serbian law 3.0 μg/g) in 46% of all analyzed samples. Results showed that Cr levels in all tested vegetable species were below MPC values recommended by the FAO/WHO organization. The largest chromium accumulator was spinach, with average values of 2.3 μg/g, followed by beetroot and parsnips with an average concentration of 1.4 μg/g. The highest average content of Ni in all analyzed vegetable species was also recorded in spinach leaves, with an average value of 2.2 μg/g, followed by broccoli (1.7 μg/g) and tomatoes (1.5 μg/g).
KeywordsToxic element pollution Vegetable quality Green markets Hazard quotients Human health
Research was conducted within the project titled: “Biologically active components and medical potential of functional food grown in Vojvodina Province, Serbia” no. 114-451-2149/2016-0, financed by government of Province of Vojvodina.
The manuscript was edited for English grammar and usage by dr Edward T. Petri.
- Agency for Environmental Protection (2011/2012/2013): Annual report on setting the air quality in the Republic of Serbia 2011. Ministry of Energy, Development and Environmental Protection, Belgrade. (in Sebian).Google Scholar
- Agency of Environmental Protection (2015): Status of surface water in Serbia. Ministry of Agriculture and Environmental Protection, Republic of Serbia. pp. 118 (in Serbian).Google Scholar
- Arsenov, D., Župunski, M., Borišev, M., Nikolić, N., Orlović, S., Pilipović, A., & Pajević, S. (2017). Exogenously applied citric acid enhances antioxidant defense and phytoextraction of cadmium by willows (Salix spp). Water, Air & Soil pollution, 228, 221. https://doi.org/10.1007/s11270-017-3405-6.CrossRefGoogle Scholar
- Bakirdere, S., & Yaman, M. (2008). Determination of lead, cadmium and copper in roadside soil and plants in Elazig, Turkey. Environmental Monitoring and Assessment, 136(1–3), 401–410.Google Scholar
- Chang, C. Y., Yu, H. Y., Chen, J. J., Li, F. B., Zhang, H. H., & Liu, C. P. (2014). Accumulation of heavy metals in leaf vegetables from agricultural soils and associated potential health risks in the Pearl River Delta, South China. Environmental Monitoring and Assessment, 186(3), 1547–1560.CrossRefGoogle Scholar
- DELL INC. (2016). Dell Statistica (data analysis software system), version 13. software.dell.com.
- EFSA CONTAM Panel (EFSA panel on contaminants in the food chain). (2014). Scientific Opinion on the risks to public health related to the presence of chromium in food and drinking water. EFSA Journal, 12(3), 3595.Google Scholar
- EFSA CONTAM Panel (EFSA Panel on Contaminants in the Food Chain). (2015). Scientific Opinion on the risks to public health related to the presence of nickel in food and drinking water. EFSA Journal, 13(2), 4002.Google Scholar
- FAO/WHO (2001): Food additives and contaminants. Joint Codex Alimentarius Commission, FAO/WHO Food standards Programme, ALINORM 01/12A. 2001.Google Scholar
- Muňoz, I., Gomez-Ramos, J. M., Agüera, A., Garcia-Reyes, J. F., Molina-Diaz, A., & Fernandez-Alba, A. R. (2009). Chemical evaluation of contaminants in wastewater effluents and the environmental risk of reusing effluents in agriculture. Trends in Analytic Chemistry, 28(6), 676–694.CrossRefGoogle Scholar
- Naser, H. M., Sultana, S., Mahmud, N. U., Gomes, R., & Noor, S. (2011). Heavy metal levels in vegetables with growth stage and plant species variations. Bangladesh Journal of Agricultural Research, 36(4), 563–574.Google Scholar
- Official Gazette of Republic of Serbia (2010/11): Regulations for pesticides, metals and metalloids and other toxic substances, chemotherapeutics, anabolic steroids and other substances which can be found in food. Službeni glasnik RS 25/2010 i 28/2011 – dr. pravilnik. Accessed 19 September 2017.Google Scholar
- Pajević, S., Borišev, M., Rončević, S., Vukov, D., & Igić, R. (2008). Heavy metal accumulation of Danube river aquatic plants—indication of chemical contamination. Central European Journal of Biology, 3(3), 285–294.Google Scholar
- Pajević, S., Borišev, M., Nikolić, N., Arsenov, D., Orlović, S. & Župunski, M. (2016). Phytoextraction of heavy metals by fast-growing trees: a review. In: Phytoremediation management of environmental contaminants. A.A. Ansari, S.S. Gill, R. Gill, G.R. Lanza, and L. Newman, Springer, p. 29–64.Google Scholar
- Pivić, R., Stanojković, A., Maksimović, J., Jošić, D., & Dinić, Z. (2017). The quality of water used for irrigation of agricultural soil in the basin of River Great Morava. AgroLife Scientific Journal., 6(1), 188–194.Google Scholar
- Singh, A., Sharma, R. K., Agrawal, M., & Marshall, F. M. (2010). Risk assessment to heavy metal toxicity through contaminated vegetables from waste water irrigated area of Varanasi, India. Tropical Ecology, 51(2), 375–387.Google Scholar
- US Environmental Protection Agency (US EPA) (1989) Risk assessment guidance for superfund: Human Health Evaluation Manual [part A]: Interim final. U.S. environmental protection agency, Washington, DC, USA [EPA/540/1–89/002].Google Scholar
- Zhong, T., Xue, D., Zhao, L., & Zhang, X. (2017). Concentration of heavy metals in vegetables and potential health risk assessment in China. Environmental Geochemistry and Health, 1–10.Google Scholar