干旱区生态环境知识资源中心(Arid): Isotopic composition of natural and synthetic chlorate (delta O-18, Delta O-17, delta Cl-37, Cl-36/Cl): Methods and initial results

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DOI	10.1016/j.chemosphere.2021.129586
	Isotopic composition of natural and synthetic chlorate (delta O-18, Delta O-17, delta Cl-37, Cl-36/Cl): Methods and initial results
	Jackson, W. Andrew; Brundrett, Maeghan; Bohlke, J. K.; Hatzinger, Paul B.; Mroczkowski, Stanley J.; Sturchio, Neil C.
通讯作者	Jackson, WA (corresponding author), Texas Tech Univ, Dept Civil Environm & Construct Engn, 911 Boston Ave, Lubbock, TX 79409 USA.
来源期刊	CHEMOSPHERE
ISSN	0045-6535
EISSN	1879-1298
出版年	2021
卷号	274
英文摘要	Natural chlorate (ClO3-) is widely distributed in terrestrial and extraterrestrial environments. To improve understanding of the origins and distribution of ClO3-, we developed and tested methods to determine the multi-dimensional isotopic compositions (delta(8O), Delta O-17, delta Cl-37, Cl-36/Cl) of ClO3- and then applied the methods to samples of natural nitrate-rich caliche-type salt deposits in the Atacama Desert, Chile, and Death Valley, USA. Tests with reagents and artificial mixed samples indicate stable-isotope ratios were minimally affected by the purification processes. Chlorate extracted from Atacama samples had -18O = +7.0 to +11.1 parts per thousand, Delta O-17 = +5.7 to +6.4 parts per thousand, -Cl-37 = -1.4 to +1.3 parts per thousand, and 36Cl/Cl = 48 - 10-15 to 104 - 10-15. Chlorate from Death Valley samples had -18O = -6.9 to +1.6%, Delta O-17 = +0.4 to +2.6%, -37Cl = +0.8 to +1.0 parts per thousand, and Cl-36/Cl = 14 - 10 -15 to 44 - 10-15. Positive Delta O-17 values of natural ClO3- indicate that its production involved reaction with O-3, while its Cl isotopic composition is consistent with a tropospheric or near-surface source of Cl. The Delta 17O and -O-18 values of natural ClO3- are positively correlated, as are those of ClO4- and NO3- from the same localities, possibly indicating variation in the relative contributions of O-3 as a source of O in the formation of the oxyanions. Additional isotopic analyses of ClO3- could provide stronger constraints on its production mechanisms and/or post-formational alterations, with applications for environmental forensics, global biogeochemical cycling of Cl, and the origins of oxyanions detected on Mars. (C) 2021 Elsevier Ltd. All rights reserved.
英文关键词	Chlorate Perchlorate Oxyanions Stable isotope analysis Cl cycling
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000642944800003
WOS关键词	PERCHLORATE PRODUCTION ; OZONE OXIDATION ; NITRATE ; GROUNDWATER ; CHLORINE ; DEPOSITION ; WATER ; MARS ; ION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349839
作者单位	[Jackson, W. Andrew; Brundrett, Maeghan] Texas Tech Univ, Lubbock, TX 79409 USA; [Bohlke, J. K.; Mroczkowski, Stanley J.] US Geol Survey, Reston, VA 20192 USA; [Hatzinger, Paul B.] APTIM, Lawrenceville, NJ 08648 USA; [Sturchio, Neil C.] Univ Delaware, Newark, DE 19716 USA
推荐引用方式 GB/T 7714	Jackson, W. Andrew,Brundrett, Maeghan,Bohlke, J. K.,et al. Isotopic composition of natural and synthetic chlorate (delta O-18, Delta O-17, delta Cl-37, Cl-36/Cl): Methods and initial results[J]. United States Geological Survey,2021,274.
APA	Jackson, W. Andrew,Brundrett, Maeghan,Bohlke, J. K.,Hatzinger, Paul B.,Mroczkowski, Stanley J.,&Sturchio, Neil C..(2021).Isotopic composition of natural and synthetic chlorate (delta O-18, Delta O-17, delta Cl-37, Cl-36/Cl): Methods and initial results.CHEMOSPHERE,274.
MLA	Jackson, W. Andrew,et al."Isotopic composition of natural and synthetic chlorate (delta O-18, Delta O-17, delta Cl-37, Cl-36/Cl): Methods and initial results".CHEMOSPHERE 274(2021).