Production of Hydrogen Peroxide in Groundwater at Rifle, Colorado

doi:10.1021/acs.est.6b04803

CORC > 北京大学 > 工学院

	Production of Hydrogen Peroxide in Groundwater at Rifle, Colorado
	Yuan, Xiu ; Nico, Peter S. ; Huang, Xiang ; Liu, Tongxu ; Ulrich, Craig ; Williams, Kenneth H. ; Davis, James A.
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2017
关键词	HYDROXYL RADICAL PRODUCTION DISSOLVED ORGANIC-MATTER NORTH PACIFIC-OCEAN NATURAL-WATERS FRESH-WATER PHOTOCHEMICAL PRODUCTION HETEROTROPHIC BACTERIA GENERATED SUPEROXIDE GEOTHERMAL WATERS AQUEOUS-SOLUTIONS
DOI	10.1021/acs.est.6b04803
英文摘要	The commonly held assumption that photodependent processes dominate H2O2 production in natural waters has been recently questioned. Here, we present evidence for the unrecognized and light-independent generation of H2O2 in groundwater of an alluvial aquifer adjacent to the Colorado River near Rifle, CO. In situ detection using a sensitive chemiluminescent method suggests H2O2 concentrations ranging from lower than the detection limit (<1 nM) to 54 nM along the vertical profiles obtained at various locations across the aquifer. Our results also suggest dark formation of H2O2 is more likely to occur in transitional redox environments where reduced elements (e.g., reduced metals and NOM) meet oxygen, such as oxic-anoxic interfaces. A simplified kinetic model involving interactions among iron, reduced NOM, and oxygen was able to reproduce roughly many, but not all, of the features in our detected H2O2 profiles, and therefore there are other minor biological and/or chemical controls on H2O2 steady-state concentrations in such aquifer. Because of its transient nature, the widespread presence of H2O2 in groundwater suggests the existence of a balance between H2O2 sources and sinks, which potentially involves a cascade of various biogeochemically important processes that could have significant impacts on metal/nutrient cycling in groundwater-dependent ecosystems, such as wetlands and springs. More importantly, our results demonstrate that reactive oxygen species are not only widespread in oceanic and atmospheric systems but also in the subsurface domain, possibly the least understood component of biogeochemical cycles.; U.S. Department of Energy, Office of Science,Office of Biological and Environmental Research [DE-AC02-05CH11231]; Office of Legacy Management of the U.S. Department of Energy [DE-AC02-05CH11231]; SCI(E); ARTICLE; 14; 7881-7891; 51
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/472091]
专题	工学院
推荐引用方式 GB/T 7714	Yuan, Xiu,Nico, Peter S.,Huang, Xiang,et al. Production of Hydrogen Peroxide in Groundwater at Rifle, Colorado[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017.
APA	Yuan, Xiu.,Nico, Peter S..,Huang, Xiang.,Liu, Tongxu.,Ulrich, Craig.,...&Davis, James A..(2017).Production of Hydrogen Peroxide in Groundwater at Rifle, Colorado.ENVIRONMENTAL SCIENCE & TECHNOLOGY.
MLA	Yuan, Xiu,et al."Production of Hydrogen Peroxide in Groundwater at Rifle, Colorado".ENVIRONMENTAL SCIENCE & TECHNOLOGY (2017).