Sequential extraction procedure for the separation of Ni and V species in crude oil and analysis by ETAAS, GC–MS, and IR

Cavalcante, Cleusa; Oliveira, José Paulo de; Hamada, Juliana; Siqueira, Fernanda Amaral de; Nascimento, Angerson Nogueira do

doi:10.1016/j.fuel.2018.02.033

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…[ 16 ] The absorption peak at 1600 cm −1 was mainly attributed to C═C of aromatic ring. [ 17,18 ] The absorptions at 1750–1700 cm −1 are attributed to C═O and COOH. The absorption at 1300–1100 cm −1 is caused by sulfur and nitrogen‐containing substances.…”

Section: Results and Analysismentioning

confidence: 99%

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Insight into Washing of Wet and Dry Crude Oil‐Contaminated Soil

Chen

et al. 2021

CLEAN Soil Air Water

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Two types of artificial oil‐contaminated soils (OCS) are prepared upon mixing sandy soil with water and crude oil in different proportion. OCS‐I represents the contaminated dry soil and OCS‐II the contaminated wet soil. Soil and crude oil are characterized through infrared spectroscopy and zeta potential analysis, and the OCS microstructure model has been discussed. It is speculated that the polarity petroleum components (e.g., non‐hydrocarbons) are higher in the oil layer of the neighboring soils, forming a “polarity bottom layer.” In OCS‐I, the “polarity bottom layer” is tightly adhered to soil and exhibits poor mobility. This layer is difficult to separate from soil through washing, thereby resulting in a low oil removal rate (ORR). In OCS‐II, the petroleum and soil are separated by a water film with high liquidity. During washing, the “polarity bottom layer” is easily separable from soil, thereby resulting in a high removal rate of polarity component in crude oil and high ORR as well. Based on the results of this study, it could be concluded that OCS‐I is much more difficult to be washed than OCS‐II when these two types of soils contain relatively same amount of substance content (oil, water, and other crude oil groups).

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Section: Results and Analysismentioning

confidence: 99%

“…The absorption at 1030 cm −1 is caused by S═O. [ 18,19 ] The absorptions at 880 and 820 cm −1 are caused by aromatic C─C. [ 16 ] The absorption at 720 cm −1 is attributed to C─H.…”

Section: Results and Analysismentioning

confidence: 99%

Insight into Washing of Wet and Dry Crude Oil‐Contaminated Soil

Chen

et al. 2021

CLEAN Soil Air Water

View full text Add to dashboard Cite

show abstract

“…13 Due to the high selectivity and sensitivity of ETAAS as well as its cost effectiveness, this method is one of the most powerful and popular analytical tools for the determination of low concentrations of heavy metals present in complex matrices. 14,15 However, this technique presents some problems, mainly related to the formation of thermally stable, non-volatile species, particularly the carbides of some elements (including vanadium) on the surface on the graphite atomizer and the consequent memory effects. 16–18 Some of these problems could be overcome by using graphite platforms (L'vov pyrolytic graphite platforms, PGPs) with the purpose to increase the life of the tubes and to minimize memory effects.…”

Section: Introductionmentioning

confidence: 99%