Method for laboratory testing of solvents for enhanced oil recovery based on dispersiometry and thin layer chromatography

Nikolaev, V. F.; Foss, L. E.; Ilyasov, R.A.; Timirgalieva, A. Kh.; Shageev, Albert F.

doi:10.1016/j.fuel.2018.08.009

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…The thickness of this layer was about 0.2 mm (200 μm). The TLC plates were placed in a rectangular tank containing the eluent which was a solvent mixture composed of 99 vol-% petroleum ether 40–60/1 vol-% acetone ( Ciura et al, 2017 ; Nikolaev et al, 2019 ). The stains from the fractions deposited at 1 cm from the base of the layer migrate on the TLC plate more or less quickly based on the interactions between the mobile phase (eluent and MO/PCB) and the stationary phase.…”

Section: Methodsmentioning

confidence: 99%

A simple and reliable method for separation of mineral oil/polychlorobiphenyl mixtures

Gherdaoui

Bouberka

Delbarre³

et al. 2022

Waste Manag Res

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Polychlorinated biphenyls (PCBs) were broadly applied worldwide as electrical insulators in transformers and power capacitors, due to their high dielectric constant and non-flammability. They were often added to mineral oils (MOs) and used as dielectric fluids, which are nowadays classified as hazardous waste. Indeed, the Stockholm Convention aims to eliminate the use of equipment with PCB content greater than 0.005 wt-% (=50 ppm) by 2025. Accurate identification and quantification of small traces of PCBs contained in MO thus represent a great analytical challenge. To achieve this goal, a simple, cost-effective and fast chromatographic process was developed to separate PCBs from MO, allowing to obtain reliable data to determine the concentration of PCBs, reduced to 2–3 ppm. Experimental and analytical methods, such as thin layer chromatography, column chromatography as well as gas chromatography coupled with mass spectroscopy, were applied to acquire a high level of qualitative and quantitative determination of PCBs in transformer MOs.

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Section: Methodsmentioning

confidence: 99%