Human health risk assessment and contamination of heavy metals and organophosphate pesticides accumulated in rice crop of northern Iran

Document Type : (original research)

Authors

1 Department of Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Department of Environment, Faculty of Natural Resources and Marine Science, Tarbiat Modares University, Noor, Iran

3 Assistant Professor, Department of Marine and Fisheries Sciences, Department of Marine and Fisheries Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran

10.22034/aej.2022.335275.2781

Abstract

Environmental pollution has become one of the main problems of today's societies in a way that in addition to natural ecosystems, it also endangers human health. Therefore, in this study, the contamination of heavy metals and organophosphate toxins accumulated in two different types of rice consumed by humans was measured. The risk of carcinogenicity and non-carcinogenicity associated with these toxins for children and adults in rice fields in northern Iran was also assessed. For this purpose, 17 stations were selected for sampling rice consumption from farms in Mazandaran province in the first and second cultivation groups. After sampling, rice samples were wrapped in foil to measure toxins and placed in plastic packs to measure heavy metals. Heavy metals were measured using ICP-MS and toxins were measured using GC-MS and mercury was measured using mercury autoanalyzer. Carcinogenic and non-carcinogenic risk indices for both groups of children and adults in the first and second culture groups were evaluated and calculated. The results showed that nickel and lead showed the highest values in the collected samples at station 14 at 0.38 and at station 6 at 0.17 mg/kg, respectively. In addition, the toxic and carcinogenic metals arsenic, cadmium and mercury in stations 6, 5 and 6 showed values of 0.094, 0.017 and 0.001 mg/kg, respectively. Station 1 and Station 2 have the highest and lowest values of diazinon in the range of 0.038 and 0.004, respectively, and chloroprifus have the highest and lowest values in stations 8 and 14, respectively, in the range of 0.019 and 0.001 mg/kg. The non-carcinogenic risk of the first and second cultures was highest for children and adults for safe toxins and for nickel metal. THQ levels also showed a high risk for consumers. The risk of carcinogenicity for the target groups was highest in different concentrations of chromium and in the second group for children the group had high risk levels. The results of this study showed that rice produced in farms in northern Iran contains different amounts of toxins and heavy metals that have carcinogenic and non-carcinogenic potential for consumers.

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Main Subjects

References

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Journal of Animal Environment
Volume 15, Issue 1
June 2023
Pages 309-322

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