Factors Controlling Leaching of Polycyclic Aromatic Hydrocarbons from Petroleum Source Rock Using Nonionic Surfactant
Factors Controlling Leaching of Polycyclic Aromatic Hydrocarbons from Petroleum Source Rock Using Nonionic Surfactant
复制标题
非离子表面活性剂从石油源岩中浸出多环芳烃的控制因素
作者：
A. Akinlua;M. Jochmann;Y. Qian;M. Sulkowski;T. Schmidt
研究了非离子表面活性剂在微波辐射辅助下从石油源岩中萃取多环芳烃（PAHs）的情况，并确定了最大收率的条件。结果表明，萃取温度和表面活性剂类型对PAHs的萃取率有显着影响。表面活性剂浓度、辐射功率、样品/溶剂比和混合表面活性剂（即特定比例的表面活性剂混合物）等因素也会影响这些化合物的萃取效率。微波辅助非离子表面活性剂从石油源岩中萃取多环芳烃的最佳温度为 120 °C，最适合的表面活性剂为 Brij 35。新方法的萃取效率与索氏萃取法相当，但新型非离子表面活性剂萃取系统的萃取时间缩短和环境友好是明显的优势。研究结果还表明，微波辅助非离子表面活性剂萃取是一种良好、高效的绿色石油源岩地球化学评价分析制备技术。
The extraction of polycyclic aromatic hydrocarbons (PAHs) from petroleum source rock by nonionic surfactants with the assistance of microwave irradiation was investigated and the conditions for maximum yield were determined. The results showed that the extraction temperatures and type of surfactant have significant effects on extraction yields of PAHs. Factors such as surfactant concentration, irradiation power, sample/solvent ratio and mixing surfactants (i.e., mixture of surfactant at specific ratio) also influence the extraction efficiencies for these compounds. The optimum temperature for microwave-assisted nonionic surfactant extraction of PAHs from petroleum source rock was 120 °C and the best suited surfactant was Brij 35. The new method showed extraction efficiencies comparable to those afforded by the Soxhlet extraction method, but a reduction of the extraction times and environmentally friendliness of the new nonionic surfactant extraction system are clear advantages. The results also show that microwave-assisted nonionic surfactant extraction is a good and efficient green analytical preparatory technique for geochemical evaluation of petroleum source rock.