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    刘靖宇, 赫银峰, 耿建阳, 胡宏利, 杜古尔·卫卫, 张毅, 陈志超. 典型干旱区绿洲土壤氟的迁移富集及健康风险评价[J]. 中国地质. DOI: 10.12029/gc20230417001
    引用本文: 刘靖宇, 赫银峰, 耿建阳, 胡宏利, 杜古尔·卫卫, 张毅, 陈志超. 典型干旱区绿洲土壤氟的迁移富集及健康风险评价[J]. 中国地质. DOI: 10.12029/gc20230417001
    LIU Jingyu, HE Yinfeng, GENG Jianyang, HU Hongli, DU Guer·weiwei, ZHANG Yi, CHEN Zhichao. Migration enrichment and health risk assessment of oasis soil fluorine in typical arid areas[J]. GEOLOGY IN CHINA. DOI: 10.12029/gc20230417001
    Citation: LIU Jingyu, HE Yinfeng, GENG Jianyang, HU Hongli, DU Guer·weiwei, ZHANG Yi, CHEN Zhichao. Migration enrichment and health risk assessment of oasis soil fluorine in typical arid areas[J]. GEOLOGY IN CHINA. DOI: 10.12029/gc20230417001

    典型干旱区绿洲土壤氟的迁移富集及健康风险评价

    Migration enrichment and health risk assessment of oasis soil fluorine in typical arid areas

    • 摘要:研究目的】为准确分析干旱绿洲区土壤氟(F)的迁移富集规律及对人体健康的危害。【研究方法】结合统计学理论与空间分析手段,分析土壤F迁移富集的影响因素,并开展土壤F健康风险评价。【研究结果】结果表明: (1)研究区表层土壤F含量平均值为543 mg·kg-1,是绿洲区土壤F背景值的1.28倍,是全国A层土壤F背景值的1.14倍。(2)研究区土壤F含量的垂向变化受到土壤质地、有机碳(Corg)含量等土壤理化性质的影响;土壤F含量的水平分布受土壤pH值、强蒸发气候等的影响,并表现出明显“表聚性”。同时,区内土壤F含量与地貌环境“标志性”指标Fe2O3、MgO呈显著正相关关系,与Al2O3、K2O、CaO呈正相关关系,与SiO2和Na2O呈负相关关系。(3)成人与儿童的非致癌健康风险HQ指数均小于1。敏感性分析结果显示,体重(BW)对成人和儿童非致癌风险的贡献率分别为-49.5%和-50.9%,说明体重越小,非致癌风险越高,且在儿童中表现更明显。【结论】研究区表层土壤F空间分布差异性较大,部分区域存在F异常现象;研究区土壤F的主要来源为成土母质,塔里木盆地的“砂源”既是主要的“氟源”;同时,人为因素等外源输入也影响着土壤F的空间分布格局。研究区土壤F健康风险主要暴露途径为经口摄入,且在儿童中表现更明显,但整体危害性较小。

       

      Abstract: Objective To accurately analyze the migration enrichment pattern of soil fluoride in the arid oasis area and the risks to human health.Methods Combining statistical theory and spatial analysis tools to analyze the factors influencing soil fluoride transport enrichment and carry out soil fluoride health risk assessment.Results The results show that:(1) The mean fluoride content of the surface soil in the study area is 543 mg·kg-1, which is 1.28 times the background fluoride value for soils in the oasis zone and 1.14 times the national background fluoride value for soils in layer A. (2) The vertical variation of soil fluoride content in the study area is influenced by soil texture, organic carbon content, and other soil physicochemical properties; the horizontal distribution of soil fluoride content is influenced by soil pH, strong evaporation climate, etc., and shows a clear "Surface Riches". At the same time, the fluoride content of the soils in the area was significantly and positively correlated with Fe2O3 and MgO, with Al2O3, K2O, and CaO, and negatively correlated with SiO2 and Na2O, the 'signature' indicators of the landscape environment. (3) The sensitivity analysis showed that body weight contributed -49.5% and -50.9% to the non-cancer risk in adults and child, respectively, indicating that the lower the body weight, the higher the non-cancer risk, which was more pronounced in children.Conclusions The main source of soil fluorine in the study area is the soil-forming parent material, and the "sand source" of the Tarim Basin is the main source of fluorine. At the same time, exogenous inputs such as anthropogenic factors also influence the spatial distribution pattern of soil fluorine. The spatial distribution pattern of soil The main route of exposure to soil fluorine in the study area is oral ingestion, which is more pronounced in children, but the overall risk is low.

       

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