مطالعات علوم محیط زیست

مطالعات علوم محیط زیست

کارایی برنج (Oryza sativa) و گندم (Triticum aestivum)در جذب عناصر بالقوه سمی

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشیار گروه مهندسی محیط زیست، دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد، شهرکرد
2 استادیار گروه مهندسی صنایع مبلمان، دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد، شهرکرد
3 دانش آموخته کارشناسی ارشد، گروه مهندسی محیط زیست، دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد، شهرکرد
4 دانشیار گروه مهندسی طبیعت، دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد، شهرکرد
10.22034/jess.2026.581498.2454
چکیده
آلودگی خاک‌های کشاورزی به عناصر بالقوه سمی از مهم‌ترین مسائل زیست‌محیطی و بهداشتی در دهه‌های اخیر به‌شمار می‌رود. این عناصر به دلیل پایداری زیاد، تحرک‌پذیری نسبی در خاک و قابلیت انتقال به اندام‌های خوراکی گیاهان، می‌توانند از طریق زنجیره غذایی وارد بدن انسان شوند و مخاطرات متعددی ایجاد کنند. هدف این پژوهش شناسایی نوع و میزان فلزات سنگین موجود در خاک‌های زراعی و بررسی توانایی گیاه برنج (Oryza sativa) و گندم (Triticum aestivum)در جذب این فلزات است. در این مطالعه نمونه‌برداری از خاک زمین‌های کشاورزی واقع در جنوب و جنوب‌غربی اصفهان از لایه سطحی تا نیمه‌عمقی خاک در محدوده 5 تا 30 سانتی‌متر برداشت شدند. نمونه های خاک و گیاه در فصل بهار 1402 برداشت شدند. پس از آماده‌سازی نمونه‌ها، غلظت عناصر با روش‌های آزمایشگاهی استاندارد اندازه‌گیری و شاخص‌های آماری شامل حداقل، حداکثر، میانگین، انحراف معیار و چولگی محاسبه شد. نتایج اندازه‌گیری در خاک نشان داد میانگین عناصر در اغلب موارد در محدوده طبیعی قرار دارد؛ به‌طوری‌که در خاک‌های زیر کشت برنج میانگین مس 54/33، سرب 9/22 و مولیبدن 60/0 میلی‌گرم بر کیلوگرم اندازه‌گیری شد. این موضوع بیانگر غالب بودن منشأ زمین‌زاد عناصر و نبود آلودگی شدید منطقه است، هرچند تغییرات مکانی برخی عناصر مشاهده شد. بررسی همزمان خاک و گیاه نشان داد الگوی توزیع عناصر تحت تأثیر عوامل زمین‌زاد و انسان‌زاد قرار دارد. اگرچه غلظت اغلب فلزات سنگین در محدوده مجاز قرار داشت، اما تجمع موضعی عناصری مانند سرب، روی، آرسنیک و استرانسیوم مشاهده شد که در صورت تداوم مدیریت نامناسب کشاورزی می‌تواند خطرات زیست‌محیطی و بهداشتی ایجاد کند.
کلیدواژه‌ها

عنوان مقاله English

Efficiency of rice (Oryza sativa) and wheat (Triticum aestivum) in the absorption of potential elements

نویسندگان English

nasrin Gharahi 1
leils fathi 2
fatemeh jaberi 3
elham ghehsareh 4
mohsen bahmani 2
1 Associate Professor, Department of Environmental Engineering, Faculty of Natural Resources and Earth Sciences, Shahrekord University, Shahrekord
2 Assistant Professor, Faculty of Natural Resources and Earth Sciences, Shahrekord University, Shahrekord
3 MSc Graduate, Department of Environmental Engineering, Faculty of Natural Resources and Earth Sciences, Shahrekord University, Shahrekord
4 Associate Professor, Department of Nature Engineering, Faculty of Natural Resources and Earth Sciences, Shahrekord University, Shahrekord
چکیده English

Contamination of agricultural soils with potentially toxic elements is considered one of the most important environmental and public health issues in recent decades. These elements can enter the human food chain through plants and cause numerous health risks. The absorption and accumulation of these elements depend on the plant species and its physiological characteristics. The aim of this study was to identify the type and concentration of heavy metals present in agricultural soils and to investigate the ability of different edible vegetables to absorb these metals, as well as to propose strategies for reducing the negative environmental impacts of these pollutants and minimizing risks to human health. The aim of this study is to identify the type and amount of heavy metals present in agricultural soils and to investigate the ability of rice (Oryza sativa) and wheat (Triticum aestivum) plants to absorb these metals.

Materials and methods
In this study, soil samples were taken from agricultural lands located in the south and southwest of Isfahan from the surface to semi-deep soil layer in the range of 5 to 30 cm. Soil and plant samples were taken in the spring of 2024. After sample preparation, element concentrations were measured using standard laboratory methods and statistical indices including minimum, maximum, mean, standard deviation, and skewness were calculated.

Results and discussion
The results of soil measurements showed that the average element concentrations were in most cases within the normal range; so that in rice-cultivated soils, the average copper concentrations were 33.54, lead 22.9, and molybdenum 0.60 mg/kg. This indicates the dominance of the terrestrial origin of elements and the absence of severe pollution in the region, although spatial variations of some elements were observed. Simultaneous examination of soil and plants showed that the distribution pattern of elements is influenced by terrestrial and anthropogenic factors. Although the concentration of most heavy metals was within the permissible range, local accumulation of elements such as lead, zinc, arsenic, and strontium was observed, which could pose environmental and health risks if improper agricultural management continues

Conclusion
Investigation of plant tissues showed that element uptake strongly depends on plant type. To prevent the gradual accumulation of these elements, periodic monitoring of soil and plants, control of irrigation water quality, proper fertilizer management, and the use of sustainable methods such as phytoremediation are essential. Keywords: Potentially toxic elements, heavy metals, soil-to-plant transfer, bioaccumulation, phytoremediation, food safety

Contamination of agricultural soils with potentially toxic elements is considered one of the most important environmental and public health issues in recent decades. These elements can enter the human food chain through plants and cause numerous health risks. The absorption and accumulation of these elements depend on the plant species and its physiological characteristics. The aim of this study was to identify the type and concentration of heavy metals present in agricultural soils and to investigate the ability of different edible vegetables to absorb these metals, as well as to propose strategies for reducing the negative environmental impacts of these pollutants and minimizing risks to human health. The aim of this study is to identify the type and amount of heavy metals present in agricultural soils and to investigate the ability of rice (Oryza sativa) and wheat (Triticum aestivum) plants to absorb these metals.

Materials and methods
In this study, soil samples were taken from agricultural lands located in the south and southwest of Isfahan from the surface to semi-deep soil layer in the range of 5 to 30 cm. Soil and plant samples were taken in the spring of 2024. After sample preparation, element concentrations were measured using standard laboratory methods and statistical indices including minimum, maximum, mean, standard deviation, and skewness were calculated.

Results and discussion
The results of soil measurements showed that the average element concentrations were in most cases within the normal range; so that in rice-cultivated soils, the average copper concentrations were 33.54, lead 22.9, and molybdenum 0.60 mg/kg. This indicates the dominance of the terrestrial origin of elements and the absence of severe pollution in the region, although spatial variations of some elements were observed. Simultaneous examination of soil and plants showed that the distribution pattern of elements is influenced by terrestrial and anthropogenic factors. Although the concentration of most heavy metals was within the permissible range, local accumulation of elements such as lead, zinc, arsenic, and strontium was observed, which could pose environmental and health risks if improper agricultural management continues

Conclusion
Investigation of plant tissues showed that element uptake strongly depends on plant type. To prevent the gradual accumulation of these elements, periodic monitoring of soil and plants, control of irrigation water quality, proper fertilizer management, and the use of sustainable methods such as phytoremediation are essential. Keywords: Potentially toxic elements, heavy metals, soil-to-plant transfer, bioaccumulation, phytoremediation, food safety
Contamination of agricultural soils with potentially toxic elements is considered one of the most important environmental and public health issues in recent decades. These elements can enter the human food chain through plants and cause numerous health risks. The absorption and accumulation of these elements depend on the plant species and its physiological characteristics. The aim of this study was to identify the type and concentration of heavy metals present in agricultural soils and to investigate the ability of different edible vegetables to absorb these metals, as well as to propose strategies for reducing the negative environmental impacts of these pollutants and minimizing risks to human health. The aim of this study is to identify the type and amount of heavy metals present in agricultural soils and to investigate the ability of rice (Oryza sativa) and wheat (Triticum aestivum) plants to absorb these metals.

Materials and methods
In this study, soil samples were taken from agricultural lands located in the south and southwest of Isfahan from the surface to semi-deep soil layer in the range of 5 to 30 cm. Soil and plant samples were taken in the spring of 2024. After sample preparation, element concentrations were measured using standard laboratory methods and statistical indices including minimum, maximum, mean, standard deviation, and skewness were calculated.

Results and discussion
The results of soil measurements showed that the average element concentrations were in most cases within the normal range; so that in rice-cultivated soils, the average copper concentrations were 33.54, lead 22.9, and molybdenum 0.60 mg/kg. This indicates the dominance of the terrestrial origin of elements and the absence of severe pollution in the region, although spatial variations of some elements were observed. Simultaneous examination of soil and plants showed that the distribution pattern of elements is influenced by terrestrial and anthropogenic factors. Although the concentration of most heavy metals was within the permissible range, local accumulation of elements such as lead, zinc, arsenic, and strontium was observed, which could pose environmental and health risks if improper agricultural management continues

Conclusion
Investigation of plant tissues showed that element uptake strongly depends on plant type. To prevent the gradual accumulation of these elements, periodic monitoring of soil and plants, control of irrigation water quality, proper fertilizer management, and the use of sustainable methods such as phytoremediation are essential. Keywords: Potentially toxic elements, heavy metals, soil-to-plant transfer, bioaccumulation, phytoremediation, food safety

کلیدواژه‌ها English

Potentially toxic elements
heavy metals
soil-to-plant transfer
bioaccumulation
food safety
1.       Bhat, S. A., Bashir, O., Haq, S. A. U., Amin, T., Rafiq, A., Ali, M., Américo-Pinheiro, J. H. P., and Sher, F. 2022. Phytoremediation of heavy metals in soil and water: An eco-friendly, sustainable and multidisciplinary approach. Chemosphere, 303 (Part 1): 134788.
2.       Brahma, S., Pegu, L., Saikia, B., Chintey, R., & Sonowal, D. 2025. Heavy metal contamination in vegetables and their amelioration: A review. Agricultural Reviews. https://doi.org/10.18805/ag.R-2737
3.       Clemens, S., & Ma, J. F. 2022. Toxic heavy metal and metalloid accumulation in crop plants and foods. Annual Review of Plant Biology, 73, 159–181. https://doi.org/10.1146/annurev-arplant-102820-012911
4.       Genchi, G., Sinicropi, M. S., Carocci, A., Lauria, G., & Catalano, A. 2020a. The effects of cadmium toxicity. International Journal of Environmental Research and Public Health, 17(11), 3782. https://doi.org/10.3390/ijerph17113782
5.       Genchi, G., Sinicropi, M. S., Lauria, G., Carocci, A., & Catalano, A. 2020b. Lead toxicity: Impact on human health. International Journal of Environmental Research and Public Health, 17(12), 4312. https://doi.org/10.3390/ijerph17124312
6.       Islam, M. S. 2024. Heavy metals in agricultural soils: Uptake by crops and human health implications. Environmental Pollution, 327, 121234. https://doi.org/10.1016/j.envpol.2024.121234
7.       Islam, M. S., Ahmed, M. K., Habibullah-Al-Mamun, M., & Masunaga, S. 2020. Potential toxic elements in food crops: Uptake, bioaccumulation and human health risk assessment. Environmental Monitoring and Assessment, 192, 1–15. https://doi.org/10.1007/s10661-020-8208-7
8.       Jalali, M., Meyari, A. 2022. Heavy metal contents, soil-to-plant transfer factors, and associated health risks in vegetables grown in western Iran. Journal of Food Composition and Analysis, 106: 104316.
9.       Kicińska, A., Pomykała, R., & Izquierdo-Diaz, M. 2022. Changes in soil pH and mobility of heavy metals in contaminated soils. European Journal of Soil Science 73(1): e13203.
10.   Lin, H., Wang, Z., Liu, C., and Dong, Y. 2022. Technologies for removing heavy metals from contaminated soils on farmland: A review. Chemosphere, 305: 135457.
11.   Lu, N., Li, G., Sun, Y., Wei, Y., He, L., and Li, Y. 2021. Phytoremediation potential of four native plants in soils contaminated with lead in a mining area. Land, 10 (11): 1129.
12.   Luthansa, U. M., Sulistiyaning Titah, H., and Pratikno, H. 2021. The ability of mangrove plant on lead phytoremediation at Wonorejo Estuary, Surabaya, Indonesia. Journal of Ecological Engineering, 22 (6): 268-253.
13.   Mohammadi, A. A., Zarei, A., Majidi, S., Ghaderpoury, A., Hashempour, Y., Saghi, M. H., & Ghaderpoori, M. 2019. Carcinogenic and non-carcinogenic health risk assessment of heavy metals in drinking water of Khorramabad, Iran. MethodsX, 6, 1642-1651.‏
14.   Mojiri, A. 2011. The potential of corn (Zea mays) for phytoremediation of soil contaminated with cadmium and lead. Journal of Biological and Environmental Sciences, 5 (13): 22-17.
15.   Rashid, A., Schutte, B. J., Ulery, A., Deyholos, M. K., Sanogo, S., Lehnhoff, E. A., and Beck, L. 2023. Heavy metal contamination in agricultural soil: Environmental pollutants affecting crop health. Agronomy, 13 (6): 1521.
16.   Sikakwe, G. U., Briggs, D. C., & Iwegbue, C. M. A. 2024. Mercury exposure and human health risks: Neurotoxicity, nephrotoxicity and developmental effects. Environmental Toxicology and Pharmacology, 105, 104345. https://doi.org/10.1016/j.etap.2024.104345
17.   Tchounwou, P. B., Yedjou, C. G., Patlolla, A. K., & Sutton, D. J. 2020. Heavy metal toxicity and the environment. EXS, 101, 133–164. https://doi.org/10.1007/978-3-7643-8340-4_6
18.   Thakur, R., Sarvade, S., and Dwivedi, B. S. 2022. Heavy metals: Soil contamination and its remediation. AATCC Review, 10 (2): 76-59.
19.   World Health Organization. 2021. Mercury and health / Lead poisoning and health / Arsenic. World Health Organization. https://www.who.int
20.   رزمجو، ا. 1399. بررسی حذف فلزات سنگین از خاک‌های آلوده با تکنیک گیاه‌پالایی. تنش‌های محیطی در علوم زراعی، 10:(2( 345-349.