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- W2082848419 abstract "Oil sands extracted naphthenic acids fractions are known to contain impurities with various levels of unsaturation and aromaticity. These constituents contain functional groups that absorb ultraviolet-visible wavelength (UV-Vis) radiation and give intense florescence emission in contrast to the fully saturated alicyclic naphthenic acids. UV-Vis absorption and fluorescence emission spectrophotometry are presented here as inexpensive and quick screening methods that the detection of chromophoric surrogate compounds that serve as an internal standard for the indirect analysis of oil sands naphthenic acids. The method detection limit for the screening techniques was approximately 1 mg/L with an observed linear range of 1–100 mg/L. The precision of measurements was generally within 10% r.s.d. There was generally good agreement (within 20% r.s.d) for isotherm parameters from non-linear fitting of Langmuir, BET and Freundlich models for sorption of Athabasca oil sands naphthenic acid mixtures to activated carbon samples determined by UV-Vis absorption, fluorescence emission spectroscopy, and conventional direct injection electrospray ionization mass spectrometry." @default.
- W2082848419 created "2016-06-24" @default.
- W2082848419 creator A5005237155 @default.
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- W2082848419 date "2008-11-05" @default.
- W2082848419 modified "2023-09-26" @default.
- W2082848419 title "Screening of oil sands naphthenic acids by UV-Vis absorption and fluorescence emission spectrophotometry" @default.
- W2082848419 cites W1968424116 @default.
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- W2082848419 doi "https://doi.org/10.1080/10934520802330255" @default.
- W2082848419 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18988108" @default.
- W2082848419 hasPublicationYear "2008" @default.
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