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通过综合性效果导向分析和非目标选方法,识别和优先考虑处理过的回流和页岩气开采场所产生的水中的有机毒物

Liwei He¹, Fei Cheng², Fan Wu¹

¹Guangdong Provincial Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou 511443, China.

|February 21, 2025

概括

水力压裂的回流和产生的水 (FPW) 构成生态风险. 一个集成的工作流确定了处理过的FPW中的关键毒素,揭示了较少的疏水化合物作为高风险的化合物. 这种方法增强了混合物风险评估.

科学领域:

环境化学环境化学
生态毒理学生态毒理学
分析化学分析化学

背景情况:

水力压裂产生反流和产生的水 (FPW),复杂的化学混合物与生态风险.
由于这些混合物的复杂性,评估这些混合物的风险具有挑战性.

研究的目的:

开发和验证一个综合工作流程,结合效果导向分析 (EDA) 和非目标查 (NTS) 来识别和优先考虑受处理的FPW (T-FPW) 中的毒素.
评估与T-FPW中的化学成分相关的生态风险.

主要方法:

样本提取,分成和斑马鱼胚胎毒性测试.
目标和非目标化学分析加上毒理学优先级指数 (ToxPi) 来确定风险优先级.
使用参考标准确认已识别的有毒物质.

主要成果:

来自裂裂液及其降解产物的少水化合物 (log K_ow <3.7) 被确定为高风险毒性物质.
EDA 分解降低了混合物的复杂性,提高了NTS的效率.
六种非标毒性物被确定具有比标污染物更高的生态风险.

结论:

集成的EDA和NTS工作流有效地识别和优先考虑T-FPW等复杂环境混合物中的有毒物质.
这种方法显著提高了混合物风险评估的效率和准确性.
较少的疏水性化合物是处理过的FPW毒性的关键贡献者.

关键词:

化学混合物是一种化学混合物.以结果为导向的分析.回流和产生的水.基于HRMS的非目标分析.毒理学优先级指数毒理学优先级指数

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