福建连城县潜在富硒土壤典型种植区花生-土壤系统金属元素含量特征及健康风险评价

黄彪; 鲁菲菲; 李巍; 林永辉; 吴建衍

文章摘要

黄彪,鲁菲菲,李巍,林永辉,吴建衍.福建连城县潜在富硒土壤典型种植区花生-土壤系统金属元素含量特征及健康风险评价[J].农业环境科学学报,2025,44(7):1710-1720.

福建连城县潜在富硒土壤典型种植区花生-土壤系统金属元素含量特征及健康风险评价

Metal content characteristics and health risk assessment of peanut-soil system in typical potential selenium-rich planting areas of Liancheng County，Fujian Province

投稿时间：2024-05-26

DOI：10.11654/jaes.2024-0442

中文关键词: 花生土壤硒金属元素健康风险评价

英文关键词: peanut soil selenium metal elements health risks assessment

基金项目:福建省属公益类科研院所专项（2023R1020001）；福建省农业科学院农产品质量安全与营养健康科技创新团队项目（CXTD2021011-1）； “5511”协同创新工程-农产品质量安全与营养健康协同创新平台项目（XTCXGC2021020）

作者	单位
黄彪	福建省农产品质量安全重点实验室/福建省农业科学院农业质量标准与检测技术研究所, 福州 350003 农业农村部农产品质量安全风险评估实验室(福州), 福州 350003
鲁菲菲	福建省农产品质量安全重点实验室/福建省农业科学院农业质量标准与检测技术研究所, 福州 350003 农业农村部农产品质量安全风险评估实验室(福州), 福州 350003
李巍	福建省农产品质量安全重点实验室/福建省农业科学院农业质量标准与检测技术研究所, 福州 350003 农业农村部农产品质量安全风险评估实验室(福州), 福州 350003
林永辉	福建省农产品质量安全重点实验室/福建省农业科学院农业质量标准与检测技术研究所, 福州 350003 农业农村部农产品质量安全风险评估实验室(福州), 福州 350003
吴建衍	福建省农产品质量安全重点实验室/福建省农业科学院农业质量标准与检测技术研究所, 福州 350003 农业农村部农产品质量安全风险评估实验室(福州), 福州 350003

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中文摘要:

为了探究福建连城县潜在富硒土壤典型种植区花生-土壤系统金属元素含量特征及进行健康风险评价，本研究采集福建省龙岩市连城县主要种植点土壤和花生样品各32份，使用原子荧光光谱仪（AFS）和电感耦合等离子体质谱仪（ICP-MS）检测Se及Ca、Cd、Cr、Cu、Fe、K、Mg、Mn、Na、Pb、Zn等11种金属元素含量，采用单项污染指数法、内梅罗指数法分析种植地土壤的污染情况，运用相关性分析研究花生对土壤中元素富集特征，并采用国际常用风险评估模型靶标危害系数（THQ）和综合危害指数（TTHQ）评价其健康风险。结果表明：研究区土壤Se含量为0.14~0.63 mg·kg^?1，平均含量为0.25 mg·kg^?1；花生中Se含量范围为0.006~0.079 mg·kg^?1，平均含量为0.012 mg·kg^?1。各元素在土壤中含量平均值大小为K>Fe>Na>Ca>Mg>Mn>Cr>Zn>Pb>Cu>Se>Cd，在花生中含量平均值大小则为Mg>K>Ca>Mn>Zn>Fe>Na>Cr>Cu>Pb>Cd>Se。区域土壤内梅罗指数的平均值为0.61，说明研究区土壤整体处于清洁的水平，但Cd单项污染在警戒限水平的占56.3%。花生对不同元素富集系数差异明显，富集系数值大小顺序为Mg>Zn>Mn>Cd>K>Ca>Se>Cu>Cr>Pb>Na>Fe。花生对Mg、Zn富集系数均超过1，分别为2.838和1.009。花生样品中重金属元素以Cr含量为最高（0.18~0.81 mg·kg^?1），但所有重金属元素含量均在国家安全标准范围内；样品中人体必需元素以Mg、K含量较高，其平均值分别为5.51、4.31 mg·kg^?1。相关性分析表明，花生中Cd、Cu、Na、Zn 4种元素与Se元素存在正相关，但不存在显著性；Pb元素含量与Se元素含量显著负相关（P<0.01）。研究表明，4种重金属通过花生的摄入对人体造成的健康风险顺序为Cr>Cd>Pb>Cu，Cr是对研究区花生健康风险贡献率最大的因子；但研究区花生中Pb、Cd、Cr、Cu的THQ和TTHQ值均小于1，对人体健康无明显危害。

英文摘要:

To investigate the selenium and metal element composition within the soil-peanut system in a typical potential selenium-rich planting area in Liancheng County, Fujian Province, and to assess the health risks associated with heavy metals in peanuts, 32 garden soil samples and their corresponding 32 peanut samples were collected. The concentrations of Se and 11 other metal elements, including Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Pb, Zn were analyzed. The single pollution index and Nemerow index were employed to assess soil contamination in the planting fields, and correlation analysis was conducted to examine the enrichment patterns of metal elements in peanuts. Additionally, the dietary risks associated with four heavy metals were evaluated using the target hazard quotient（THQ）and total target hazard quotient（TTHQ）. The Se concentration in the planting soil ranged from 0.14 mg·kg^-1 to 0.63 mg·kg^-1, with an average concentration of 0.25 mg·kg^-1. In peanuts, Se content varied between 0.006 mg·kg^-1 and 0.079 mg·kg^-1, with an average of 0.012 mg·kg^-1. The average Nemerow index was 0.61, suggesting that the soil across the study area was generally at a clean level. However, attention should be given to Cd contamination, as 56.3% of the samples exceeded the alert threshold for Cd pollution. The contents of elements in plant soil were in the order of K>Fe>Na>Ca>Mg>Mn>Cr>Zn>Pb>Cu>Se>Cd, and in peanut were in the order of Mg>K>Ca>Mn>Zn>Fe> Na>Cr>Cu>Pb>Cd>Se. The average concentration coefficients of peanuts for the various elements displayed significant variation, ranked as follows：Mg>Zn>Mn>Cd>K>Ca>Se>Cu>Cr>Pb>Na>Fe.The results indicated that peanuts exhibited the highest accumulation capacity for Mg and Zn, but the lowest for Na and Fe. The enrichment factors for Mg and Zn were both greater than 1, with values of 2.838 and 1.009, respectively. Cr had the highest mean concentration compared to other metal elements, yet all heavy metal concentrations in the peanuts remained within the permissible limits set by national standards. Correlation analysis revealed that Se content in peanuts had a positive correlation with Cd, Cu, Na, and Zn, while it exhibited a strong negative correlation with Pb（P<0.01）. The ranking of health risks from the intake of four heavy metals was Cr>Cd>Pb>Cu, with Cr contributing the most to health risks in the selenium-rich soil planting area. Overall, both the THQ and TTHQ values were below 1, indicating no significant health risks to humans from the collected peanut samples in the study area.

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