来自硫化生物炭的有机物质的分子特征
Zhengfeng Jiang1,2,3, Chen He2, Fei Gao1
1Petrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China.
Environmental science. Processes & impacts
|August 12, 2024
概括
硫化生物炭衍生有机物 (SBC-DOM) 富含硫和,使其比其他生物炭类型更容易生物降解. 这项研究澄清了SBC-DOM.
科学领域:
- 环境化学环境化学
- 土壤科学 土壤科学
- 材料科学 材料科学 材料科学
背景情况:
- 生物炭衍生有机物 (B-DOM) 组成影响土壤元素和污染物动态.
- 硫化生物炭衍生有机物 (SBC-DOM) 的分子特性在很大程度上是未知的.
- 硫化生物炭 (SBC) 是一种具有显著吸附能力的功能材料.
研究的目的:
- 为了研究SBC-DOM.的分子组成.
- 为了将SBC-DOM与来自米 (RH),PYC和HYC的DOM进行比较.
- 了解SBC-DOM分子结构对土壤应用的含义.
主要方法:
- 使用单步碳化-硫化制备SBC.
- 使用里埃变换离子循环子共振质谱法 (FT-ICR-MS) 对DOM的分子表征.
- 从SBC,RH,PYC和HYC对DOM进行比较分析.
主要成果:
- SBC-DOM主要由含有CHOS和CHONS的配方 (85%) 组成,与含有丰富CHO配方的RH,PYC和HYC DOM不同.
- 在SBC-DOM中,不和的阿里法酸化合物的丰度更高,这表明更高的可溶性和生物降解性.
- 与PYC-DOM和HYC-DOM相比,SBC-DOM显示了高的O/C和 (N + O) /C比率,并且含有更多的硫化合物.
结论:
- 独特的SBC-DOM分子组成,特别是其硫含量和酸不和,影响其在土壤中的行为.
- 结果为利用SBC在土壤改善和修复策略中提供了理论基础.
- 进一步研究SBC-DOM的环境命运和影响是有必要的.
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