Trace analysis of total naphthenic acids in aqueous environmental matrices by liquid chromatography/mass spectrometry-quadrupole time of flight mass spectrometry direct injection

Brunswick, Pamela; Shang, Dayue; Aggelen, Graham van; Hindle, Ralph; Hewitt, L. Mark; Frank, Richard A.; Haberl, Maxine; Kim, Marcus

doi:10.1016/j.chroma.2015.05.048

Cited by 38 publications

(33 citation statements)

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“…The method centrifuged aqueous samples to precipitate particulate matter and injected a large volume (1 ml) of supernatant into the LC‐MS system for detection by full scan negative ion ESI. Further work, with the addition of high‐resolution MS, yielded a method for high‐throughput analysis of total NAs and improved detection limits by an order of magnitude . While these techniques require little sample preparation, highly complex samples [e.g.…”

Section: Introductionmentioning

confidence: 99%

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A semi‐quantitative approach for the rapid screening and mass profiling of naphthenic acids directly in contaminated aqueous samples

et al. 2015

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We report the use of a direct sampling, online analytical approach for the determination of acid extractable naphthenic acids in complex aqueous samples, known as condensed phase membrane introduction mass spectrometry (CP-MIMS). The technique employs a capillary hollow fibre semi-permeable membrane probe configured for immersion into a pH adjusted sample. A continuously flowing methanol acceptor phase transfers naphthenic acids to an electrospray ionization source, operated in negative ion mode, whereupon they are analysed by mass spectrometry as [M-H](-) ions. High-resolution mass spectrometry is used to characterize the influence of sample pH on membrane transport of multiple components of complex naphthenic acid mixtures. We demonstrate the use of CP-MIMS for semi-quantitative analysis of real-world samples using selected ion monitoring and full scan mass spectra at unit mass resolution. The technique has also been employed to continuously monitor the temporal evolution in the mass profile and concentrations of individual naphthenic acid isomer classes in heterogeneous solutions during adsorption processes. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

“…Further work, with the addition of high-resolution MS, yielded a method for high-throughput analysis of total NAs and improved detection limits by an order of magnitude. [13] While these techniques require little sample preparation, highly complex samples [e.g. oil sand process waters (OSPW)] would prove challenging.…”

Section: Introductionmentioning

confidence: 99%

A semi‐quantitative approach for the rapid screening and mass profiling of naphthenic acids directly in contaminated aqueous samples

et al. 2015

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“…The physical and chemical constituents in OSPW are likely attributed to the physical structure and chemical composition of the oil sand ore being extracted. In recent years, improvements in advanced chromatographic separation and high‐resolution mass spectrometric techniques have greatly expanded the understanding of the chemical complexity of OSPW and other bitumen‐influenced waters (Rowland, Scarlett et al ; Rowland, West et al ; Jones et al ; Headley, Peru, Mohamed et al ; Noestheden et al 2014; Ortiz et al 2014; Pereira and Martin ; Brunswick et al , , ; Hughes, Mahaffey et al ; Kovalchik et al ). This improved ability to characterize OSPW and its constituents has enabled improved targeted toxicological studies on specific fractions of OSPW (Hughes, Huang et al ; Morandi et al ; Bauer ).…”

Section: Workhop Frameworkmentioning

confidence: 99%

Overview of Existing Science to Inform Oil Sands Process Water Release: A Technical Workshop Summary

Tanna¹,

Redman

Frank

et al. 2019

Integr Envir Assess & Manag

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The extraction of oil sands from mining operations in the Athabasca Oil Sands Region uses an alkaline hot water extraction process. The oil sands process water (OSPW) is recycled to facilitate material transport (e.g., ore and tailings), process cooling, and is also reused in the extraction process. The industry has expanded since commercial mining began in 1967 and companies have been accumulating increasing inventories of OSPW. Short‐ and long‐term sustainable water management practices require the ability to return treated water to the environment. The safe release of OSPW needs to be based on sound science and engineering practices to ensure downstream protection of ecological and human health. A significant body of research has contributed to the understanding of the chemistry and toxicity of OSPW. A multistakeholder science workshop was held in September 2017 to summarize the state of science on the toxicity and chemistry of OSPW. The goal of the workshop was to review completed research in the areas of toxicology, chemical analysis, and monitoring to support the release of treated oil sands water. A key outcome from the workshop was identifying research needs to inform future water management practices required to support OSPW return. Another key outcome of the workshop was the recognition that methods are sufficiently developed to characterize chemical and toxicological characteristics of OSPW to address and close knowledge gaps. Industry, government, and local indigenous stakeholders have proceeded to utilize these insights in reviewing policy and regulations. Integr Environ Assess Manag 2019;15:519–527. © 2019 SETAC

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“…XCHT is recorded in the current Chinese Pharmacopoeia as well as in the Japanese Pharmacopoeia . It is widely used for the treatment of various inflammatory disorders (bronchitis, the common cold, and pneumonitis), hepatobiliary (chronic liver disease, hepatic fibrosis, and hepatocarcinoma), respiratory and gastrointestinal diseases in clinical practice .…”

Section: Introductionmentioning

confidence: 99%

Chemical and absorption signatures of Xiao Chai Hu Tang

Zhang

Chen

et al. 2018

Rapid Comm Mass Spectrometry

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Trace analysis of total naphthenic acids in aqueous environmental matrices by liquid chromatography/mass spectrometry-quadrupole time of flight mass spectrometry direct injection

Cited by 38 publications

References 32 publications

A semi‐quantitative approach for the rapid screening and mass profiling of naphthenic acids directly in contaminated aqueous samples

A semi‐quantitative approach for the rapid screening and mass profiling of naphthenic acids directly in contaminated aqueous samples

Overview of Existing Science to Inform Oil Sands Process Water Release: A Technical Workshop Summary

Chemical and absorption signatures of Xiao Chai Hu Tang

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