Assessment of cadmium, lead and nitrogen elements content of the rice in Abraj region of Fars
Subject Areas :
1 - Department of Environment, Abadeh Branch, Islamic Azad University, Abadeh, Iran
Keywords: nitrogen, Rice, Cadmium, Lead, National Standard,
Abstract :
Rice is one of the main staple foods which is at the risk of contamination with elements and heavy metals. Given the fact that the entry of heavy metals into the food chain and reaching critical concentrations has adverse metabolic and physiological effects on human beings, assessment of healthiness of produced rice is necessary. The present study aimed to evaluate cadmium, lead and nitrogen elements amount in the rice of the Abraj region of Marvdasht county in Fars province in comparison with national standard. The samples were collected randomly from soil and rice plant (root and grain) in four studied stations in three consecutive months of August, September and October, 2016. The results showed that cadmium and lead content in soil and rice grain were lower than national agricultural standards, which means that the produced rice is not contaminated with cadmium and lead. On the other hand, nitrogen content in soil and rice grain was higher than national agricultural standards, which showed nitrogen-contaminated soil and extra accumulation of nitrogen in the produced rice in this region. Therefore, cadmium and lead-containing fertilizers were adequately used however use of nitrate-containing fertilizers was excessive in this region.
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