地学前缘 ›› 2025, Vol. 32 ›› Issue (4): 363-375.DOI: 10.13745/j.esf.sf.2025.4.90

• “健康地质调查”专栏 • 上一篇    下一篇

苏州东山和西山枇杷中矿质元素赋存分异特征、地质成因与健康风险评价

赵虎(), 郭峰*(), 战楠, 刘斯文, 靖张微, 袁鸿飞, 于汀汀, 张欣, 朱云, 王蕾   

  1. 国家地质实验测试中心 自然资源部生态地球化学重点实验室, 北京 100037
  • 收稿日期:2025-01-05 修回日期:2025-03-07 出版日期:2025-07-25 发布日期:2025-08-04
  • 通信作者: *郭 峰(1982—),女,研究员,博士生导师,主要从事新型有机污染物分析新技术、新方法研究与应用方面的研究。E-mail: guofeng@mail.cgs.gov.cn
  • 作者简介:赵 虎(1998—),男,博士研究生,主要从事地球化学方面的研究。E-mail: 1178045711@qq.com
  • 基金资助:
    国家自然科学基金项目(21976044);中国地质科学院基本科研业务费专项经费项目(KYZD202418);中国地质调查局地质调查项目(DD20250501406);中国地质调查局地质调查项目(DD20230118);中国地质调查局地质调查项目(DD20211414)

Characteristics of mineral element distribution, geological origins, and health risk assessment of loquat fruits from Dongshan and Xishan of Suzhou

ZHAO Hu(), GUO Feng*(), ZHAN Nan, LIU Siwen, JING Zhangwei, YUAN Hongfei, YU Tingting, ZHANG Xin, ZHU Yun, WANG Lei   

  1. MNR Key Laboratory of Eco-geochemistry, National Research Center for Geoanalysis, Beijing 100037, China
  • Received:2025-01-05 Revised:2025-03-07 Online:2025-07-25 Published:2025-08-04

摘要:

苏州东山和西山是我国主要的枇杷产区,探究两大产区间枇杷中矿质元素赋存分异特征与健康风险评价对提升果实品质、保障食品安全具有重要意义。本研究通过正交偏最小二乘判别分析得出两地果实中元素含量存在显著的差异。果实中硒、钴、锰含量,西山高于东山;镁、铜含量则东山高于西山。偏最小二乘回归模型分析得出,果实中矿质元素含量与土壤中元素含量密切相关,且东西山果实元素与土壤元素间的相关性存在差异。西山产区,果实中锌与土壤中镁、锰、镍含量正相关,与碘含量负相关;果实中锰与土壤中锰、铜含量正相关,与碘、镉、铬含量负相关。东山产区,果实中锌与土壤中钙、锰、砷含量正相关,与铜、镉含量负相关;果实中锰与土壤中镍、镉、砷含量正相关,与锌、铬含量负相关。两地分处观山组与茅山组,不同的成土母质类型可能是造成东西山果实元素差异的根本原因。两大产区果实中重金属元素含量均未超过GB 2762—2022所规定的限量,目标危害商和潜在致癌风险指数均显著低于安全阈值。两大产区土地均符合绿色食品产地环境质量标准,满足枇杷绿色食品生产的要求。本研究结果可为苏州地区枇杷种植规划与元素调控提供科学依据。

关键词: 枇杷, 土壤元素, 果实元素, 偏最小二乘法, 健康风险评价

Abstract:

Dongshan and Xishan in Suzhou are China’s primary loquat production regions. Investigating the distribution and differentiation of mineral elements in loquat fruits from these areas and evaluating health risks associated with loquat consumption are crucial for improving fruit quality and ensuring food safety. Orthogonal partial least squares discriminant analysis (OPLS-DA) revealed significant differences in elemental composition between fruits from the two regions. Selenium (Se), cobalt (Co), and manganese (Mn) contents were higher in Xishan fruits, whereas magnesium (Mg) and copper (Cu) were higher in Dongshan fruits. Partial least squares regression (PLSR) indicated a close relationship between fruit and local soil elemental contents, with distinct correlation patterns between regions: In Xishan: Fruit Zn showed positive correlations with soil Mg, Mn, and Ni, but a negative correlation with soil I; Fruit Mn was positively correlated with soil Mn and Cu, and negatively correlated with soil I, Cd, and Cr. In Dongshan: Fruit Zn showed positive correlations with soil Ca, Mn, and As, but negative correlations with soil Cu and Cd; Fruit Mn was positively correlated with soil Ni, Cd, and As, and negatively correlated with soil Zn and Cr. The two regions lie within the Guanshan Formation (Xishan) and Maoshan Formation (Dongshan), respectively. The distinct parent materials of these geological formations are likely the fundamental cause of the observed elemental differences in loquat fruits. Heavy metal contents in fruits from both regions complied with GB 2762—2022 limits, with both the target hazard quotient (THQ) and potential carcinogenic risk index (CRI) well below safety thresholds. Local soils met the environmental quality standards for green food production areas, supporting loquat cultivation for green food. These findings provide a scientific basis for loquat cultivation planning and elemental regulation in Suzhou.

Key words: loquat, soil elements, fruit elements, partial least squares method, health risk assessment

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