气候变化领域集成服务门户(CCPortal): Global biogeochemical cycle of vanadium

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DOI	10.1073/pnas.1715500114
	Global biogeochemical cycle of vanadium
	Schlesinger W.H.; Klein E.M.; Vengosh A.
发表日期	2017
ISSN	0027-8424
起始页码	E11092
结束页码	E11100
卷号	114 期号:52
英文摘要	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 × 109 g V/y) and extraction and combustion of fossil fuels (600 × 109 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 × 109 g V/y to 50 × 109 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.
英文关键词	Aerosols; Geochemical cycle; Petroleum; Rock weathering; Vanadium
语种	英语
scopus关键词	asphalt; coal; fossil fuel; petroleum; sea water; vanadium; water; vanadium; air; Article; atmosphere; biogeochemical cycle; combustion; concentration (parameters); pollution transport; precipitation; priority journal; river; sea; tar sand; volatilization; biological model; chemistry; human; metabolism; Humans; Models, Biological; Vanadium
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159055
作者单位	Schlesinger, W.H., Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC 27708, United States; Klein, E.M., Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC 27708, United States; Vengosh, A., Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC 27708, United States
推荐引用方式 GB/T 7714	Schlesinger W.H.,Klein E.M.,Vengosh A.. Global biogeochemical cycle of vanadium[J],2017,114(52).
APA	Schlesinger W.H.,Klein E.M.,&Vengosh A..(2017).Global biogeochemical cycle of vanadium.Proceedings of the National Academy of Sciences of the United States of America,114(52).
MLA	Schlesinger W.H.,et al."Global biogeochemical cycle of vanadium".Proceedings of the National Academy of Sciences of the United States of America 114.52(2017).