Department of Environment, Faculty of Natural Resources and Marine Science, Tarbiat Modares University, Tehran, Iran.
Bull Environ Contam Toxicol. 2012 Apr;88(4):614-6. doi: 10.1007/s00128-012-0537-7. Epub 2012 Feb 10.
In this study, Arsenic (As) was measured in several varieties of imported and local cultivated rice. Soil samples collected from rice farms situated in south Caspian Sea (Iran) were also studied. The mean concentration of As in imported rice, local farmed rice and soil, were determined as 0.28, 0.39 and 3.80 μg g(-1) dry weight, respectively. Estimated daily intake of As through human consumption of imported and local produced rice was 0.77 and 1.074 μg day(-1) kg(-1) B.W., respectively. These values are much lower than the tolerable daily intakes estimated by JECFA. The As concentration in the soil (3.80 μg g(-1) dry) was below acceptable limit for agricultural soil of 20.0 mg kg(-1) as recommended by the European Community (EC). No correlation between the As concentrations in rice and soil samples was found (p > 0.05).
本研究测定了几种进口和本地种植的大米中的砷（As）含量。还研究了来自里海南部（伊朗）稻田的土壤样本。进口大米、本地种植大米和土壤中砷的平均浓度分别为 0.28、0.39 和 3.80μg/g 干重。通过人类食用进口和本地生产的大米，估计每日砷摄入量分别为 0.77 和 1.074μg/天·kg-1·BW。这些值远低于 JECFA 估计的可耐受每日摄入量。土壤中的砷浓度（3.80μg/g 干重）低于欧洲共同体（EC）建议的 20.0mg/kg 农用土壤的可接受限值。在大米和土壤样本中未发现砷浓度之间存在相关性（p>0.05）。
