Vanadium, nickel and sulfur in crude oils and source rocks and their relationship with biomarkers: Implications for the origin of crude oils in Venezuelan basins

López, Liliana; Mónaco, Salvador Lo

doi:10.1016/j.orggeochem.2016.11.007

Cited by 63 publications

(35 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Data from the US Geological Survey (58) shows greater V in oils with lower API gravity values and differences between conventional oil (average V =16 mg/kg; API gravity = 38), medium oil (V = 98 mg/kg; API gravity = 22), heavy oil (V = 177 mg/kg; API gravity = 16.3), and bitumen (V = 334 mg/kg; API gravity = 5). Similarly, crude oils from Venezuela show an inverse correlation between V concentration and API gravity, with V concentrations up to 600 mg/kg in biodegradable oils (API gravity < 15), and up to 1,200 mg/kg in heavy (API gravity ∼10) immature oils (59). Consequently, the mobilization of V by petroleum extraction depends strongly on the relative proportions of light and heavy oils.…”

Section: Significancementioning

confidence: 99%

Global biogeochemical cycle of vanadium

Schlesinger

Klein

Vengosh

2017

Proc. Natl. Acad. Sci. U.S.A.

199

126

View full text Add to dashboard Cite

Synthesizing published data, we provide a quantitative summary of the global biogeochemical cycle of vanadium (V), including both human-derived and natural fluxes. Through mining of V ores (130 × 10 9 g V/y) and extraction and combustion of fossil fuels (600 × 10 9 g V/y), humans are the predominant force in the geochemical cycle of V at Earth's surface. Human emissions of V to the atmosphere are now likely to exceed background emissions by as much as a factor of 1.7, and, presumably, we have altered the deposition of V from the atmosphere by a similar amount. Excessive V in air and water has potential, but poorly documented, consequences for human health. Much of the atmospheric flux probably derives from emissions from the combustion of fossil fuels, but the magnitude of this flux depends on the type of fuel, with relatively low emissions from coal and higher contributions from heavy crude oils, tar sands bitumen, and petroleum coke. Increasing interest in petroleum derived from unconventional deposits is likely to lead to greater emissions of V to the atmosphere in the near future. Our analysis further suggests that the flux of V in rivers has been incremented by about 15% from human activities. Overall, the budget of dissolved V in the oceans is remarkably well balanced-with about 40 × 10 9 g V/y to 50 × 10 9 g V/y inputs and outputs, and a mean residence time for dissolved V in seawater of about 130,000 y with respect to inputs from rivers.vanadium | petroleum | geochemical cycle | aerosols | rock weathering V anadium (V) occurs in a wide range of earth materials and is a relatively abundant trace metal, with an average concentration in the upper continental crust (97 mg/kg) more than double those of nickel (Ni) and copper (Cu) (1). In modern society, the majority of V is used to improve the strength and corrosion resistance of steel; it is also of increasing strategic and technological interest as a specialty metal in electronics and batteries. V is an essential trace element in prokaryotic biochemistry, where it is found as an alternative to molybdenum in the molecular structure of nitrogenase, the enzyme of N fixation (2-4). It also appears in the structure of enzymes in the marine algae responsible for the formation of bromoform (5) and methyl bromide (6), which contributes to the depletion of stratospheric ozone. Whether V is an essential trace element in higher plants and animals is unknown (7), with some evidence favoring an essential role in at least some higher organisms (e.g., refs. 8 and 9). Higher plants accumulate about 1 mg/kg in their tissues (10).The mean concentration of V in the continental crust is about 97 mg/kg (1, 11), and ∼20 × 10 9 g V/y enters biogeochemical cycles at Earth's surface through chemical weathering (12). V, which can exist in three common oxidation states, is largely found as the vanadate ion (H 2 VO 4 − ) in natural oxidized waters of near-neutral pH. The dissolved concentration in river water is about 0.7 μg/L, less than half of the concentration of ∼1.8 μg/L in seawa...

show abstract

Section: Significancementioning

confidence: 99%

Global biogeochemical cycle of vanadium

Schlesinger

Klein

Vengosh

2017

Proc. Natl. Acad. Sci. U.S.A.

199

126

View full text Add to dashboard Cite

show abstract

“…Another important factor is the contamination associated with heavy metals such as nickel and vanadium which depends on the oil field [40]. Another example is the Amazonia, located in northern Peru, where heavy metal pollution has been found, due to the extraction of hydrocarbons threatening wildlife and local populations that depended on subsistent hunting and fishing [41]; this risk has also been found in La Venta, Tabasco ( Figure 2B) y en Minatitlán, Veracruz, México (Figure 2C and D).…”

Section: Soils Contaminated By Hydrocarbonsmentioning

confidence: 99%

Introductory Chapter: Soil Contamination and Alternatives for Sustainable Development

Vázquez-Luna¹,

Cuevas-Díaz²

2019

Soil Contamination and Alternatives for Sustainable Development

View full text Add to dashboard Cite

“…Vanadium and nickel occurrence and stability in crude oils result from their complexation with porphyrins, which are tetrapyrrolic structures with high carbon number (> C 20 ) that vary with origin and oil maturity. [1][2][3] The total V and Ni contents in crude oils are commonly determined in the industry with different objectives, such as in geochemical studies [4][5][6][7][8] or for petroleum refining, in order to prevent catalyst fouling. 9,10 Accurate and reproducible results are achieved with atomic spectrometries, and authors have reported good analytical performances and faster analysis with the direct introduction of the samples diluted in solvents in inductively coupled plasma mass spectrometry (ICP-MS), instead of their microwave assisted acid decomposition.…”

Section: Introductionmentioning

confidence: 99%

Automatized Separation of Fractions from Petroleum Based on Spectrophotometric Signal Derivative Using Open-Source Hardware for the Determination of Ni and V Linked to Porphyrins

Silva¹,

Pereira²,

Pierre³

et al. 2019

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

An automated method based on open-source hardware was created for the separation of porphyrins fractions from crude oil, an essential step for the quantification of V and Ni as metalloporphyrins. Preparative liquid chromatography was implemented with a reverse phase gradient from MeOH to toluene. The system allows three solvents and fractions changes by using quaternary valves connected to an Arduino microcontroller, programmed on the basis of the absorbance signal measured and its first derivative. Additionally, the method was applied to crude oils (Venezuelan National Institute of Standards and Technology (NIST) 8505 and from a marine reservoir). V and Ni were determined by inductively coupled plasma mass spectrometry (ICP-MS) and the V-porphyrin profile was determined by high performance liquid chromatography (HPLC)-ICP-MS. The concentrations of the metals grow in the last eluting toluene fractions, associated with asphaltenes. On the other hand, V-porphyrins in the first eluting MeOH fractions showed profiles of labile compounds, with a higher percentage in the Brazilian crude oil (4.9 mg L-1 , corresponding to 18% of total V), in comparison to the one from the biodegraded NIST 8505 (59 mg L-1 , corresponding to 7% of total V). The overall methodology has a good reproducibility and provides information on elements concentrations associated with porphyrin class compounds.

show abstract

Vanadium, nickel and sulfur in crude oils and source rocks and their relationship with biomarkers: Implications for the origin of crude oils in Venezuelan basins

Cited by 63 publications

References 36 publications

Global biogeochemical cycle of vanadium

Global biogeochemical cycle of vanadium

Introductory Chapter: Soil Contamination and Alternatives for Sustainable Development

Automatized Separation of Fractions from Petroleum Based on Spectrophotometric Signal Derivative Using Open-Source Hardware for the Determination of Ni and V Linked to Porphyrins

Contact Info

Product

Resources

About