[Human health risks derived from dietary exposure to arsenic in Shaanxi Province in 2013-2015].

OBJECTIVE: To understand the daily intake of arsenic via daily dietary of Shaanxi inhabitants, and to assess the possible adverse health impact. METHODS: The arsenic contents of 4287 samples were analyzed statistically. The safety of arsenic intake was evaluated by using the dietary arsenic PTWI recommended by JECFA. The health risk was assessed with USEPA health risk assessment model. RESULTS: The arsenic contents of grains and vegetables were 0. 0265 mg / kg and 0. 0271 mg / kg, respectively. Grains and vegetables were major part of the daily diet of residents, 80% of dietary arsenic intake was from which. The average and the higher dietary intake of arsenic were 0. 423 and 1. 10μg /( kg·d), respectively, which was lower than the standard of PTWI recommended by JECFA. But the values of the individual health risk were 9. 03 × 10~(-5) and 2. 34 × 10~(-4)a~(-1), the both of which were higher than the standard of ICRP. That showed a potential health risk from As via dietary exposure for the residents. CONCLUSION: Although the average dietary intake of arsenic is in a safe range, the health risk caused by the risk cannot be ignored.