Profiling low molecular weight organic compounds from naphthenic acids, acid extractable organic mixtures, and oil sands process-affected water by SPME-GC-EIMS.,Journal of Hazardous Materials

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Profiling low molecular weight organic compounds from naphthenic acids, acid extractable organic mixtures, and oil sands process-affected water by SPME-GC-EIMS.
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2020-01-24 , DOI: 10.1016/j.jhazmat.2020.122186
Juan Manuel Gutierrez-Villagomez ₁ , Juan Vázquez-Martínez ₂ , Enrique Ramírez-Chávez ₃ , Jorge Molina-Torres ₃ , Vance L Trudeau ₁

Affiliation

Naphthenic acids (NAs) are complex mixtures of carboxylic acids from petroleum that have industrial applications and that may be released to the environment after oil spills. There is significant research on the chemical composition and toxicity of water-soluble NAs derived from oil sands mining in Alberta, Canada. Yet, little is known about low molecular weight organic compounds (LMWOC) from these sources. Headspace solid-phase microextraction coupled to gas chromatography-electron impact mass spectrometry was used for LMWOC profiling of commercial NA blends, and an acid-extractable organics (AEOs) mixture from a tailings pond. From Sigma 1, Sigma 2, Merichem NAs and the AEO extract, 54, 56, 40 and 4 compounds were identified, respectively. These include aliphatic and cyclic hydrocarbons, carboxylic acids, alkylbenzenes, phenols, naphthalene and alkyl-naphthalene, and decalin compounds. A sample of oil sands process-affected water (OSPW) and aqueous solutions of the NA blends were evaluated for matrix effects on LMWOC profiles. Principal component and clustering analyses revealed that LMWOC profiles of commercial extracts were closely related but distinct from the AEO and OSPW samples. Some of the identified LMWOC are reported to be genotoxic or carcinogenic, and therefore the NA mixtures and AEOs should be considered hazardous materials and further evaluated.

中文翻译：

通过SPME-GC-EIMS从环烷酸，可酸提取的有机混合物和受油砂处理的水中分析低分子量有机化合物。

环烷酸（NAs）是来自石油的羧酸的复杂混合物，具有工业应用，在漏油后可能释放到环境中。对加拿大艾伯塔省油砂矿开采的水溶性NAs的化学成分和毒性进行了大量研究。然而，从这些来源对低分子量有机化合物（LMWOC）知之甚少。顶空固相微萃取与气相色谱-电子冲击质谱联用，用于LMWOC分析商业NA混合物和来自尾矿池的酸可萃取有机物（AEO）混合物。从Sigma 1，Sigma 2，Merichem NAs和AEO提取物中分别鉴定出54、56、40和4种化合物。这些包括脂族和环状烃，羧酸，烷基苯，酚，萘和烷基萘以及十氢化萘化合物。评价了油砂工艺影响的水（OSPW）和NA共混物水溶液的样品对LMWOC分布的基质影响。主成分和聚类分析表明，商业提取物的LMWOC谱图密切相关，但不同于AEO和OSPW样品。据报告，某些鉴定出的低分子量有机碳具有遗传毒性或致癌性，因此应将NA混合物和AEO视为危险物质，并应进行进一步评估。主成分和聚类分析表明，商业提取物的LMWOC谱图密切相关，但不同于AEO和OSPW样品。据报告，某些鉴定出的低分子量有机碳具有遗传毒性或致癌性，因此应将NA混合物和AEO视为危险物质，并应进行进一步评估。主成分和聚类分析表明，商业提取物的LMWOC谱图密切相关，但不同于AEO和OSPW样品。据报告，某些鉴定出的低分子量有机碳具有遗传毒性或致癌性，因此应将NA混合物和AEO视为危险物质，并应进行进一步评估。

更新日期：2020-01-24

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