In this work, twelve heavy metals and arsenic, As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, and Zn, in a rice sample collected from some areas of Vietnam have been quantified and implemented by using multiple analytical platforms such as ICP-MS, AAS, and mercury analyser. Seventy rice samples collected from the Red River Delta and mining zone activity were analysed. Concentration of heavy metals and arsenic in rice was analysed after appropriated sample digestion using internal or external calibration curves. The mean concentration (mg kg⁻¹ dried weight) of the analysed elements in rice samples decreased on the order of Mn (19.268) > Fe (13.624) > Zn (8.163) > Cu (3.138) > Ni (0.384) > Cr (0.296) > Co (0.279) > As (0.115) > Cd (0.111) > Pb (0.075) > Hg (0.007) > Se (<LOD). Mercury, a highly toxic element, has been only found in rice samples collected in the mining activity zone (frequency detection 14.5% of total samples). The experimental results indicated that the heavy metals and arsenic found in rice collected from mining activity zone were higher than those in rice harvested from normal cultivated areas like the Red River Delta. The heavy metals and arsenic content in Vietnamese rice samples were also compared with the concentration of heavy metals in other foreign rice samples in some recent publications. The estimated daily intake through rice consumption was calculated and compared with the level proposed by the Food and Agriculture Organization of the United Nations. The results indicated that the provisional daily intake of Cd was higher than the level proposed by FAO, while the intake of other heavy metals was in an acceptable range of CODEX standard.

中文翻译：

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越南大米中的砷和重金属：通过大米消耗量人体暴露于这些元素的评估

在这项工作中，从越南某些地区采集的大米样品中的十二种重金属和砷，砷，镉，钴，铬，铜，铁，汞，锰，镍，铅，硒和锌已被量化和实施。通过使用多种分析平台，例如ICP-MS，AAS和汞分析仪。分析了从红河三角洲和矿区活动收集的70份水稻样品。使用内部或外部校准曲线对样品进行适当的酶切后，分析了水稻中重金属和砷的浓度。平均浓度（mg kg ^-1大米样品中分析元素的干重按Mn（19.268）> Fe（13.624）> Zn（8.163）> Cu（3.138）> Ni（0.384）> Cr（0.296）> Co（0.279）>的顺序降低如（0.115）> Cd（0.111）> Pb（0.075）> Hg（0.007）> Se（<LOD）。汞是一种剧毒元素，仅在采矿活动区收集的大米样品中被发现（频率检测占总样品的14.5％）。实验结果表明，从采矿活动区采集的水稻中发现的重金属和砷含量高于从正常种植区（如红河三角洲）采集的水稻中的重金属和砷含量。最近一些出版物还对越南大米样品中的重金属和砷含量与其他外国大米样品中的重金属含量进行了比较。计算了通过大米消耗量估算的每日摄入量，并将其与联合国粮食及农业组织提出的水平进行了比较。结果表明，Cd的每日临时摄入量高于粮农组织建议的水平，而其他重金属的摄入量在CODEX标准的可接受范围内。