溶解有机物在被硫酸盐氧化过程中的解体结构演变:从芳香度和光分析的见解
Huizhen Cao1, Fanyang Bu1, Xiaodong Li1
1State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
Environmental research
|July 3, 2024
概括
在地下水中溶解有机物 (DOM) 的硫酸氧化显示出各种芳香度变化. 富尔维酸类物质是关键驱动因素,影响DOM结构和处理后的环境行为.
科学领域:
- 环境化学环境化学
- 水资源整治技术的应用.
- 先进的氧化过程 先进的氧化过程
背景情况:
- 透硫酸盐的先进氧化对于修复有机污染的地下水至关重要.
- 了解溶解有机物 (DOM) 氧化后的结构变化至关重要,但仍然不清楚.
研究的目的:
- 调查DOM芳香度,分子量和光特性在硫酸盐氧化过程中的演变趋势.
- 确定影响结构变化的关键DOM组件和光体.
主要方法:
- 使用光学光谱学分析了八种DOM类型.
- 应用并行派系分析 (2D PARAFAC) 和二维相关谱 (2D COS).
主要成果:
- 在不同的DOM类型中观察到DOM芳香度和光强度的不同趋势.
- 富尔维酸类物质显著控制DOM芳香度和分子量.
- 确定了光体的特定氧化序列,富尔维类和微生物衍生的类物质更敏感.
结论:
- 过硫酸盐氧化诱导DOM中复杂的结构演变.
- 富尔维酸类物质在修复过程中在DOM转化中发挥着关键作用.
- 这些发现有助于预测DOM在硫酸盐处理后的环境行为.
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