植物吸收和转移纳米生物碳:评估环境命运和食物链风险
Yuliang Li1, Chenghao Ge1, Cheng Cheng2
1State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
The Science of the total environment
|September 13, 2023
概括
纳米生物炭 (N-BC) 通过根部进入小麦和中国白菜植物,并移动到芽部. 可食用卷心菜部分中显著的N-BC积累引发了食物链的担忧.
科学领域:
- 环境科学 环境科学
- 植物生物学 植物生物学
- 纳米技术纳米技术
背景情况:
- 纳米生物炭 (N-BC) 是一种新兴的纳米材料,具有多种应用.
- 了解N-BC的环境命运和植物相互作用对于生态和食品安全评估至关重要.
研究的目的:
- 调查小麦和中国白菜中N-BC的吸收和转移.
- 评估N-BC进入食品链的潜在风险.
主要方法:
- 显微镜技术 (SEM,TEM) 用于在植物组织中可视化N-BC.
- 稳定同位素分析 (使用13C-N-BC) 来确认N-BC的吸收和运输.
主要成果:
- 植物根很容易吸收N-BC,并被运送到地表组织.
- N-BC 主要局部存在于皮质组织的体和细胞壁中.
- 50.252.4%的被吸收的N-BC积聚在根部,31.032.1%在茎部和16.517.6%在叶部.
- 在中国白菜的可食部分观察到显著的N-BC积累.
结论:
- 植物很容易吸收和运输N-BC,在根和食用组织中积累.
- 可食用植物部位中N-BC的存在对食物链和人类健康构成潜在风险.
- 需要进一步研究N-BC吸收途径,环境监测至关重要.
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