石油砂中的有机物质的综合性表征,利用多种分析方法在构造的中宇宙中处理水
Lingling Yang1, Asfaw Bekele2, Mohamed Gamal El-Din1
1Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada.
Environmental research
|April 24, 2024
概括
现场介质宇宙有效地减少了油砂加工水 (OSPW) 中的溶解有机物,减少了酸 (NA) 和改善了三年来水质. 这项研究跟踪了NA转换和生物可用性,为OSPW补救策略提供了洞察力.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 环境科学 环境科学
背景情况:
- 油砂加工水 (OSPW) 含有复杂的溶解有机化合物,包括纳酸 (NAs),这可能对环境造成风险.
- 水中中宇宙提供了一个可控的环境来研究OSPW中的污染物的长期命运和转变.
- 了解OSPW有机物质的时间动态对于开发有效的补救策略至关重要.
研究的目的:
- 在现场水中中宇宙中全面描述OSPW中溶解的有机物.
- 在3年的时间内评估纳夫酸 (NAs) 和其他可生物利用的有机物的去除和转化.
- 评估OSPW急性毒性降低及其与有机化合物降解的相关性.
主要方法:
- 使用超高性能液态色谱飞行时间质谱 (UPLC-TOFMS) 进行详细的NA物种分析.
- 采用生物仿真提取方法,使用固态微提取 (BE-SPME) 来测量总生物可用有机物.
- 应用液体-液体提取 (LLE) 随后是里埃变换红外光谱学 (FTIR) 测定纳夫酸分离化合物 (NAFC).
主要成果:
- 在未稀释和半稀释的OSPW中观察到总NAs (35-38%) 和经典O2-NAs (49-58%) 的显著减少.
- 与经典的NA相比,氧化NAs (O3-O6NAs) 的增加表明了化学转化.
- 在3年内,总生物可用有机物减少了26-30% (BE-SPME),急性毒性减少了26-43%.
- 在BE-SPME,总NA和NAFC之间发现了强烈的线性相关性,突出了NA在OSPW毒性中的作用.
结论:
- 基于现场的水中宇宙是研究OSPW中溶解有机物的时间变化和降解的有效系统.
- 该研究提供了关于NAs的去除率和转化途径的宝贵数据,有助于评估OSPW补救.
- 综合分析方法为OSPW复杂的有机矩阵及其环境影响提供了全面的见解.
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