通过土壤-植物-人路径对微量元素暴露和健康风险的反复有机修订的影响
Rui You1, Anna Margenat1, Núria Cañameras2
1Environmental Chemistry Department, Institute of Environmental Assessment and Water Research, IDÆA-CSIC, E-08034, Barcelona, Spain.
Environmental research
|March 8, 2025
概括
有机肥能提高作物产量,但可以增加蔬菜中的微量元素 (TE). 虽然TE水平随着重复使用而上升,但生菜和卜的消费不会对健康构成重大风险,总危险系数 (THQ) 低于1.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 食品安全 食品安全
背景情况:
- 有机肥料丰富土壤,但可能会引入,和等微量元素 (TE).
- 持续应用有机修订物可能会导致TE在土壤中积累,增加植物吸收和潜在的人类健康风险.
- 研究土壤-植物-人类通路对于评估来自肥料的TE对食品安全的影响至关重要.
研究的目的:
- 评估多次使用有机肥对蔬菜生产和 TE 污染的影响.
- 在两个生产周期中检查叶菜和根菜中的TE积累.
- 评估与食用改性土壤种植的蔬菜相关的潜在人类健康风险.
主要方法:
- 在两个蔬菜生产周期内进行的实地研究.
- 不同的有机肥料 (污水污泥,猪,城市固体废物堆肥) 和化学肥料的比较.
- 在土壤,蔬菜 (可食用部分) 中分析TE度,并计算生物积累因子 (BCF) 和危险系数 (HQ).
主要成果:
- 污水污泥,猪和化学肥料处理导致蔬菜产量高于城市固体废物堆肥.
- 土壤中的TE度受到最小的影响,但蔬菜中的TE度与有机肥相比,与化学肥料相比,有机肥的含量更高.
- 和在第二个循环中显示出中等到高的生物积累,而和显示出低的积累. 所有治疗方法的总危险系数 (THQ) 仍然低于1.
结论:
- 重复应用有机肥料会增加蔬菜中的TE度,生物积累率因元素和蔬菜类型而异.
- 尽管 TE 摄入量增加,但使用经过测试的肥料种植的生菜和卜的消费并不构成重大健康风险.
- 精心选择和管理有机肥是重要的,以减轻潜在的长期TE积累,并确保食品安全.
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