The persistence of toxicity associated with the soluble naphthenic organic compounds (NOCs) of oil sands process-affected water (OSPW) implies that a treatment solution may be necessary to enable safe return of this water to the environment. Due to recent advances in high-resolution mass spectrometry (HRMS), the majority of the toxicity of OSPW is currently understood to derive from a subset of toxic classes, comprising only a minority of the total NOCs. Herein, oxidative treatment of OSPW with buoyant photocatalysts was evaluated under a petroleomics paradigm: chemical changes across acid-, base- and neutral-extractable organic fractions were tracked throughout the treatment with both positive and negative ion mode electrospray ionization (ESI) Orbitrap MS. Elimination of detected OS⁺ and NO⁺ classes of concern in the earliest stages of the treatment, along with preferential degradation of high carbon-numbered O₂⁻ acids, suggest that photocatalysis may detoxify OSPW with higher efficiency than previously thought. Application of petroleomic level analysis offers unprecedented insights into the treatment of petroleum impacted water, allowing reaction trends to be followed across multiple fractions and thousands of compounds simultaneously.

与油砂工艺影响的水（OSPW）的可溶性环烷有机化合物（NOC）有关的持久性毒性意味着可能需要一种处理溶液才能使该水安全地返回环境。由于高分辨率质谱法（HRMS）的最新进展，目前认为OSPW的大部分毒性来自部分毒性类别，仅占总NOC的一小部分。在本文中，在石油学范式下评估了使用浮力光催化剂对OSPW的氧化处理：在整个处理过程中，使用正离子和负离子模式电喷雾电离（ESI）Orbitrap MS跟踪了酸，碱和中性可萃取有机部分的化学变化。消除检测到的OS ⁺和NO ⁺类在治疗的最初阶段关注的，具有高的碳-编号直径：优先降解沿₂ ^-氨基酸，表明光催化可解毒OSPW用比以前认为较高的效率。石油含量分析的应用为处理石油影响的水提供了空前的见识，使反应趋势可以同时跟踪多个馏分和数千种化合物。