生物炭中的氧含量增加降低了多环芳的生物可用性,与多种生物体有关的毒性
Artur Sokołowski1, Anna Boguszewska-Czubara2, Rafał Kobyłecki3
1Department of Radiochemistry and Environmental Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Pl. M. Curie-Sklodowskiej 3, 20-031 Lublin, Poland.
Bioresource technology
|July 15, 2024
概括
生物炭 (BC) 在农业中的应用可以引入有毒的多环芳 (PAH) 和重金属. 生物可用性,而不是总含量,决定了BC毒性,表面功能化是关键.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 生态毒理学 生态毒理学
背景情况:
- 生物炭 (BC) 在农业和环境中的应用引入了可能有毒的成分,如多环芳 (PAH) 和重金属.
- 评估BC毒性需要了解这些污染物的生物可用性,这是受BC的物理化学性质的影响.
研究的目的:
- 调查原料和热解温度对BC特性,污染物含量和相关生态毒性的影响.
- 确定影响PAH和其他污染物在BC中的生物可用性和毒性的因素.
主要方法:
- 使用各种原料和热解温度生产生物炭.
- 描述BC的物理化学特性,包括表面功能化.
- 评估PAH总含量和生物可用含量.
- 对各种生物体进行生态毒性测试.
主要成果:
- 仅通过总含量来预测PAH生物可用性是误导性的;生物可用PAHs显著影响毒性.
- BC的物理化学特征,特别是表面功能化 (例如含氧组),在毒性中起着至关重要的作用.
- 毒性受到生物可用PAHs>灰>BC总PAHs含量的影响.
结论:
- 生物炭的环境影响和毒性是复杂的,取决于生物可用污染物和BC特性.
- 表面功能化是确定生物炭生态毒性的关键因素.
- 需要进一步的研究来全面评估BC对各种生物体的影响,因为单个生态毒性测试是不够的.
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