生物炭衰老对其与As (III) 的相互作用和联合细胞毒性的影响
Jian Liu1, Zihui Huo2, Yucong Mo2
1Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou, 510006, China; School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, China.
Environmental research
|February 12, 2024
概括
衰老的生物炭 (BC) 改变了其特性,改善了吸附,但减少了铜吸附. 这种老化的BC-金属离子复合物显示出降低的毒性,突出显示了老化过程.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 毒理学 毒理学 毒理学
背景情况:
- 生物炭 (BC) 被广泛用于土壤和水中的污染物固定.
- 具有多个金属离子的老年BC的环境行为和健康风险尚未得到充分研究.
- 了解BC衰老对于预测长期污染物相互作用和风险至关重要.
研究的目的:
- 研究与 (As) 和铜 (Cu) 结合的老化生物炭 (BC) 的环境行为.
- 评估老年BC-金属离子复合物的联合细胞毒性.
- 探索老化对酸吸附,脱和价值转移的影响.
主要方法:
- 制备新鲜的香皮生物炭 (BP-BC) 和老化的变种 (酸性ABP-BC,氧化OBP-BC).
- 在BP-BC和ABP-BC上对酸 (III) -酸 (II) 的吸附和脱附实验.
- 使用人类胃上皮细胞 (GES-1) 的细胞毒性评估.
主要成果:
- 衰老显著改变了BC的物理化学特性,影响了金属离子相互作用.
- 年龄化BC (ABP-BC) 增强了As(III) 的吸附,但降低了Cu(II) 的吸附.
- 陈旧的BC-金属离子复合体表现出降低的As(III) 释放和较低的联合细胞毒性.
结论:
- 生物炭衰老极大地影响了多种金属离子的吸附-脱附动态.
- 老化增强了BC的稳定性,并减少了与As和Cu相关的环境风险.
- 这项研究提供了关于老化生物炭对环境命运和毒理学影响的见解.
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