Arsenic specification in Iranian rice and risk assessment of inorganic arsenic in population of Tehran

Introduction: Arsenic is a natural component of the earth’s crust. It is found in organic or inorganic forms in nature and people are exposed to it with drinking water, eating food and environment. It is highly toxic in its inorganic form. Determination and quantification of different forms of As in food, Specially rice, as the main dish of Iranian people is really important. This study aimed to determination concentration of inorganic and total arsenic in Iranian rice that are sold in super markets of Tehran city. Methods: An analytical study was carried out in 11 samples from 11 brands of Iranian rice that were sold in super markets in Bahman 1397 in Tehran. After preparation, samples were analyzed for total and inorganic arsenic using Liquid chromatography/inductively coupled plasma mass spectrometry (LC/ICP MS). The levels of AST and AsIn doses in daily rice consumption for each person (110 grams for 70kg body weight in adult, and 110 grams for 15kg body weight in children) were calculated. Results: Based on calculations of chronic daily intake of Total and inorganic arsenic and Hazard quotient (HQ) in adults and children was observed that: HQ in adults was less than one but in children was more than one. Which it can cause Non-cancer disease in long-term. Conclusion: Average concentration of total As and inorganic As in samples were 0.1 and 0.09; that mean concentration of total As is lower than standard level perposed by ISIRI 12968 and WHO. But there is no standard level for inorganic arsenic.

کلیدواژه ها:

Inorganic Arsenic ، Total Arsenic ، Iranian rice ، Risk Assessment ، LC/ICP MS