生物炭和在低剂量同时应用有效地减少了和甲基在米粒中的积累
Feng Jing1, Hongbo Li2, Jianzhou He3
1College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, PR China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
The Science of the total environment
|September 29, 2024
概括
低剂量的生物炭和 (Se) 的结合有效地减少了在轻微污染的土壤中种植的米粒中的 (Hg) 和甲基 (MeHg). 这种方法为缓解作物中重金属积累提供了一个有希望的策略.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 土壤科学 土壤科学
背景情况:
- 在土中的 (Hg) 污染对大米安全构成风险.
- 之前的研究表明,高的生物炭或 (Se) 应用率降低了大米的Hg吸收.
- 低剂量生物炭和Se在轻微污染的土壤中减轻Hg的有效性尚未得到充分研究.
研究的目的:
- 研究低剂量生物炭和对降低和甲基在米粒中的积累的联合作用.
- 探索米中的减轻背后的机制.
主要方法:
- 有轻微污染的实地实验.
- 生物炭 (BC3) 和 (Se0.5) 单独或组合的应用.
- 在米粒中的 (Hg) 和甲基 (MeHg) 度的量化.
主要成果:
- 结合生物炭和Se处理,与对照组相比,降低了48.5%的谷物Hg.
- 单个治疗减少了Hg粒的5.4% (生物炭) 和38.3% (Se).
- 同时应用降低了甲基 (MeHg) 的29.1-91.6%.
结论:
- 低剂量生物炭和的联合应用有效地减轻了米粒中Hg和MeHg的积累.
- 机制包括Hg被生物炭吸附,与溶解的有机碳复合,HgSe沉,以及增强的MeHg降解.
- 这种综合方法为确保在轻微受Hg污染的环境中确保食品安全提供了可行的策略.
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