Cadmium content in rice and its daily intake in Ghaemshahr region of Iran

Abstract

This investigation surveyed Cadmium (Cd) content of Iranian rice (oryza saliva) which is predominant rice culture in north of Iran. A total of 60 samples were collected from Ghaemshahr region in Mazandaran province (North of Iran). The samples were collected in during harvesting of rice in field. The first step, grains of raw rice were digested by acid digestion method and then were analyzed for Cadmium by atomic absorption spectrometer. To assess the daily intake of Cd by rice, from daily consumption of rice was calculated. The results showed that average concentration of Cd in rice was 0.40± 0.16µg/g dry wt and ranged from 0.12 to 0.83 ìg/g dry wt. The Cd content in the rice samples was found to be upper the FAO/WHO Guidelines. Also average weekly intake of Cd from rice was 7.7µg/kg body weight/week that it was approximately 10% more than to the maximum weekly intake recommended by WHO/FAO.