在水-土壤-植物连续体内的药物和微量金属相互作用:对人类和土壤健康的影响
Lesly Ayala Cabana1,2, Ana de Santiago-Martín1, Raffaella Meffe1
1IMDEA Water Institute, Alcalá de Henares, 28805 Madrid, Spain.
Toxics
|July 26, 2024
概括
为灌作物而计划外的再利用水对人类健康和土壤质量构成风险. 同时存在的药物和微量金属在水中影响植物吸收和土壤酶,超过食品安全限值.
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:
- 无计划的灌用水再利用将污染物引入食物链.
- 药品 (Phs) 和微量金属 (TMs) 对作物质量和土壤健康构成风险.
- 了解水土植物连续体中的污染物相互作用至关重要.
研究的目的:
- 为了评估同时出现的Phs和TMs对水土植物连续体的影响,使用Lactuca sativa.
- 研究这些污染物对植物吸收和土壤健康的协同作用和对抗作用.
- 评估潜在的人类健康风险和食品安全影响.
主要方法:
- 使用Lactuca sativa (生菜) 的生物测试实验.
- 分析污染物在水,土壤和植物组织中同时存在的情况.
- 测量植物生物质,营养含量和土壤酶活动.
主要成果:
- 同时出现的Phs和TMs对污染物吸附和植物吸收产生了协同作用或对抗作用.
- 在Phs和TMs之间的复杂形成影响了对土壤的吸收.
- 沙拉中的 (Cd) 含量超过了食品安全限值,对健康构成风险.
- 在Ph-TM条件下,生菜生物量减少,并且观察到营养不平衡.
- 土壤酶活动 (β-galactosidase,尿素酶,硫酸酶) 受Ph和Ph-TM条件的影响.
结论:
- 使用PhS和TM的无计划的再利用水对食品安全和土壤健康构成重大风险.
- 污染物相互作用是复杂的,影响生物可用性和植物吸收.
- 对于某些污染物 (如Cd) 的监管限制,必须在灌用水的再利用中遵守.
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