Impact of soil pH and organic matter on the chemical bioavailability of vanadium species: The underlying basis for risk assessment

Reijonen, Inka; Metzler, Martina; Hartikainen, Helka Helinä

doi:10.1016/j.envpol.2015.12.046

Cited by 94 publications

(26 citation statements)

References 27 publications

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“…Some V is likely released from suspended or accumulating sediments as they experience the higher pH of seawater and from sedimentary environments with oxic conditions (72,76). In contrast, hydrothermal vent systems appear to be a net sink rather than a source for V to seawater, with hydrothermal sediment accumulations ranging from 7.1 × 10 9 g V/y (75, 77) to 22 × 10 9 g V/y to 28 × 10 9 g V/y (32,75).…”

Section: Sinks For V Mobilized From Earth's Crustmentioning

confidence: 99%

Global biogeochemical cycle of vanadium

Schlesinger

Klein

Vengosh

2017

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

190

126

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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...

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Section: Sinks For V Mobilized From Earth's Crustmentioning

confidence: 99%

Global biogeochemical cycle of vanadium

Schlesinger

Klein

Vengosh

2017

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

190

126

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“…Because the spatial distribution of soil pH has structural and stochastic characteristics, measuring it accurately has implications for crop production (Liu, Shao, & Wang, 2013b). Reijonen, Metzler and Hartikainen (2016) demonstrated that soil pH dictates the accessibility of vanadium V(+V) and V(+IV), by investigating the chemical bioavailability of vanadium species. Therefore, it is important to study the spatial variability of soil pH on a regional scale together with the factors influencing it; these are important for the regulation of soil acidity and alkalinity, control of environmental pollution, and sustainable utilization and management of soil nutrients in addition to the ensemble of components of the regional ecological environment.…”

Section: Introductionmentioning

confidence: 99%

Peer Review #1 of "Spatial variability in soil pH and land use as the main influential factor in the red beds of the Nanxiong Basin, China (v0.1)"

Braus¹

2019

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Soil pH is the main factor affecting soil nutrient availability and chemical substances in soil. It is of great significance to study the spatial variability of soil pH for the management of soil nutrients and the prediction of soil pollution. In order to explore the causes of spatial variability in soil pH in red-bed areas, the Nanxiong Basin in south China was selected as an example, and soil pH was measured in the topsoil by nested sampling (0-20 cm depth). The spatial variability characteristics of soil pH were analyzed by geostatistics and classical statistical methods, and the main factors influencing spatial variability in soil pH are discussed. The coefficient of variation in the red-bed areas of Nanxiong Basin was 17.18%, indicating moderate variability. Geostatistical analysis showed that the spherical model is the optimal theoretical model for explaining variability in soil pH, which is influenced by both structural and random factors. Analysis of the spatial distribution and pattern showed that soil pH is relatively high in the northeast and southwest, and is lower in the northwest. These results indicate that land use patterns and topographic factors are the main and secondary influencing factors, respectively.

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“…These bioaccessibility related studies have widened the range of PHE from those considered to be a priority for human health risk assessment (As, Cd and Pb) to, elements such as chromium (Cr), copper (Cu), cobalt (Co), zinc (Zn), nickel (Ni), vanadium (V) and manganese (Mn), e.g., [54,55]. This combined approach has also been used to understand the effect of aging on PHE mobility [56,57] and the modification of soil physico-chemical properties to reduce PHE toxicity [58][59][60][61].…”

Section: Introductionmentioning

confidence: 99%

The Link between Soil Geochemistry in South-West England and Human Exposure to Soil Arsenic

et al. 2018

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The aim of this research is to use the whole soil geochemistry and selected bioaccessibility measurements, using the BioAcessibility Research Group of Europe (BARGE) method, on the same soils to identify the geochemical controls on arsenic (As) bioaccessibility and to gain an understanding of its spatial distribution in south-west England. The total element concentrations of 1154 soils were measured with As concentrations ranging from 4.7–1948 mg·kg−1, with the bioaccessible As of 50 selected soils ranging from 0.6–237 mg·kg−1. A Self Modelling Mixture Resolution approach was applied to the total soil element chemistry to identify the intrinsic soil constituents (ISCs). The ISCs were used as predictor variables and As bioaccessibility as the dependant variables in a regression model for the prediction of As bioaccessibility at all soil locations to examine its regional spatial distribution. This study has shown that bioaccessibility measurements can be directly linked to the geochemical properties of soils. In summary, it seems the primary source of bioaccessible As comes from soils developed directly over the mineralised areas surrounding the granite intrusions. Secondary sources of bioaccessible As are derived from As that has been mobilised from the primary mineralised source and then re-absorbed onto clay material, Fe oxides and carbonate coatings. This information can be of direct use for land development, since land contamination can affect the health of people living, working, visiting or otherwise present on a site.

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Impact of soil pH and organic matter on the chemical bioavailability of vanadium species: The underlying basis for risk assessment

Cited by 94 publications

References 27 publications

Global biogeochemical cycle of vanadium

Global biogeochemical cycle of vanadium

Peer Review #1 of "Spatial variability in soil pH and land use as the main influential factor in the red beds of the Nanxiong Basin, China (v0.1)"

The Link between Soil Geochemistry in South-West England and Human Exposure to Soil Arsenic

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