Natural Resources Canada, CanmetENERGY, 1 Oil Patch Drive, Devon, Alberta, T9G 1A8, Canada.
Environment and Climate Change Canada, National Hydrology Research Centre, 11 Innovation Boulevard, Saskatoon, Saskatchewan, S7N 3H5, Canada.
Chemosphere. 2022 Apr;292:133415. doi: 10.1016/j.chemosphere.2021.133415. Epub 2021 Dec 22.
Negative ion electrospray Orbitrap mass spectrometry was used to analyze water samples taken from a pilot-scale spill tank test of conventional crude oil on freshwater. A 56-day spill test was performed, and water samples were taken at regular intervals throughout the test to determine what changes in water chemistry occur with time. Orbitrap mass spectrometry was used to measure oxidized species in water samples, and oxidized species are analyzed by carbon number, double bond equivalent and hydrocarbon class. Emphasis is placed on changes with time over the course of the spill test, to examine changes by weathering processes that could occur naturally in a field spill scenario. Results demonstrate that while the concentrations of polycyclic aromatic hydrocarbons decrease in the water phase over time, the concentrations of total organic carbon and oxidized species in the water increase with time, where quantities of O2 and O3 species have the highest abundance. Measurement of increasing concentrations and changing relative abundances of these oxidized compounds can be used to assess how oil behaves in a freshwater aquatic environment after a spill.
采用负离子电喷雾轨道阱质谱法分析了取自常规原油在淡水中的小型泄漏试验池的水样。进行了 56 天的泄漏试验，并在整个试验过程中定期采集水样，以确定随时间推移水化学发生了哪些变化。轨道阱质谱法用于测量水样中的氧化物种，氧化物种按碳数、双键当量和烃类进行分析。重点是泄漏试验过程中的随时间变化，以检查在野外泄漏情况下可能自然发生的风化过程中的变化。结果表明，尽管水中多环芳烃的浓度随时间的推移而降低，但水中总有机碳和氧化物种的浓度随时间的推移而增加，其中 O2 和 O3 物种的数量含量最高。测量这些氧化化合物浓度的增加和相对丰度的变化可用于评估溢油后在淡水水生环境中的行为。
