Abstract：
This study addressed micronutrients (Fe, Zn, Cu, Mn, Co) and heavy metals (As, Pb) in the soil and rice crop in Khuzestan Province, Iran. Twenty-eight composite soil and grain samples from the intended rice farms were garnered during harvest time. Concentrations of the elements in the samples and in the grains were, respectively, determined by inductively coupled plasma optical emission spectrometry and inductively coupled plasma mass spectrometry device. The average concentration of As, Fe, Co, Cu, Mn, Pb, and Zn in soil of crop were 2.71, 20,065.8, 10.43, 22.28, 422.28, 5.85, and 47.07 mg/kg, respectively. The physicochemical properties of soil, bioconcentration factor, daily intakes, and health risk assessment of the elements were calculated. The results revealed that the area covered by alkaline saline soils is poor in micronutrients. Bioconcentration factor values of all elements were less than 1. Low levels of bioconcentration factor may be for low levels of nutrients in the soil and physicochemical conditions of the soil. Furthermore, the daily intake of Co (adults\' group) and Fe and Zn (children group) was very low. Health risk assessment showed only adults are threatened by non-cancerous diseases due to excessive value of all the elements (HI = 2.53) and cancerous diseases caused by excessive As and Pb (2.86E-04 and 2.01E-05, respectively). Considering that Khuzestan Province is the fourth largest producer of rice in Iran, the lack of micronutrients and the presence of heavy metals in rice produced in the study area can adversely affect consumers. Further investigation is therefore a must in the region.
摘要：
这项研究涉及微量营养素(Fe，Zn,Cu,Mn,Co)和重金属(As，Khuzestan省土壤和水稻作物中的Pb），伊朗。在收获期间，从预期的稻田中收集了28个复合土壤和谷物样品。样品和颗粒中元素的浓度为，分别,电感耦合等离子体发射光谱和电感耦合等离子体质谱装置测定。As的平均浓度,Fe,Co,Cu,Mn,Pb,作物土壤中Zn分别为2.71、20,065.8、10.43、22.28、422.28、5.85和47.07mg/kg,分别。土壤的理化性质,生物富集因子，每日摄入量，并对要素进行了健康风险评估。结果表明，碱性盐渍土覆盖的区域微量营养素含量较差。所有元素的生物富集因子值均小于1。低水平的生物富集因子可以用于土壤中低水平的养分和土壤的物理化学条件。此外，Co（成人组）和Fe和Zn（儿童组）的每日摄入量非常低。健康风险评估显示，只有成年人由于所有元素的过高值（HI=2.53）和过量的As和Pb（分别为2.86E-04和2.01E-05）而受到非癌性疾病的威胁。考虑到胡泽斯坦省是伊朗第四大大米生产国，研究区域生产的大米中微量营养素的缺乏和重金属的存在会对消费者产生不利影响。因此，必须在该地区进行进一步调查。
