Boron isotopic fractionation during seawater evaporation

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	Boron isotopic fractionation during seawater evaporation
	Xiao, Y. K.; Li, S. Z.; Wei, H. Z.; Sun, A. D.; Liu, W. G.; Zhou, W. J.; Zhao, Z. Q.; Liu, C. Q.; Swihart, G. H.
	2007-01-16
发表期刊	MARINE CHEMISTRY
ISSN	0304-4203
卷号	103 期号:3-4 页码:382-392
关键词	Boron Isotope Isotopic Fractionation Evaporation Seawater
摘要	Laboratory experiments were undertaken to investigate the behaviour of boron at the seawater-air interface during seawater evaporation. Seawaters adjusted to different pH values were heated to 27, 33 and 40 degrees C inside a quartz evaporator. The vapor was collected with a quartz condenser using a cold trap. A natural seawater-vapor process in quiet air conditions and excluding the seaspray component was realized using this arrangement. The results indicate an enrichment of B-11 in the condensate. This implies that in the natural environment, rainfall with delta B-11 values lower than that of seawater has been affected either by continental boron sources or by the boron extracted from seawater under airflow conditions. While the net flux of boron carried away from the ocean by air masses due to seawater evaporation is significant compared to other fractionation-associated processes removing boron from the ocean, the effect of isotopic fractionation as boron enters the vapor phase on the isotopic composition of boron in the ocean over time is small. (c) 2006 Elsevier B.V All rights reserved. Laboratory experiments were undertaken to investigate the behaviour of boron at the seawater-air interface during seawater evaporation. Seawaters adjusted to different pH values were heated to 27, 33 and 40 degrees C inside a quartz evaporator. The vapor was collected with a quartz condenser using a cold trap. A natural seawater-vapor process in quiet air conditions and excluding the seaspray component was realized using this arrangement. The results indicate an enrichment of B-11 in the condensate. This implies that in the natural environment, rainfall with delta B-11 values lower than that of seawater has been affected either by continental boron sources or by the boron extracted from seawater under airflow conditions. While the net flux of boron carried away from the ocean by air masses due to seawater evaporation is significant compared to other fractionation-associated processes removing boron from the ocean, the effect of isotopic fractionation as boron enters the vapor phase on the isotopic composition of boron in the ocean over time is small. (c) 2006 Elsevier B.V All rights reserved.; Laboratory experiments were undertaken to investigate the behaviour of boron at the seawater-air interface during seawater evaporation. Seawaters adjusted to different pH values were heated to 27, 33 and 40 degrees C inside a quartz evaporator. The vapor was collected with a quartz condenser using a cold trap. A natural seawater-vapor process in quiet air conditions and excluding the seaspray component was realized using this arrangement. The results indicate an enrichment of B-11 in the condensate. This implies that in the natural environment, rainfall with delta B-11 values lower than that of seawater has been affected either by continental boron sources or by the boron extracted from seawater under airflow conditions. While the net flux of boron carried away from the ocean by air masses due to seawater evaporation is significant compared to other fractionation-associated processes removing boron from the ocean, the effect of isotopic fractionation as boron enters the vapor phase on the isotopic composition of boron in the ocean over time is small. (c) 2006 Elsevier B.V All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2294
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Guizhou, Peoples R China 4.Univ Memphis, Dept Earth Sci, Memphis, TN 38152 USA
推荐引用方式 GB/T 7714	Xiao, Y. K.,Li, S. Z.,Wei, H. Z.,et al. Boron isotopic fractionation during seawater evaporation[J]. MARINE CHEMISTRY,2007,103(3-4):382-392.
APA	Xiao, Y. K..,Li, S. Z..,Wei, H. Z..,Sun, A. D..,Liu, W. G..,...&Swihart, G. H..(2007).Boron isotopic fractionation during seawater evaporation.MARINE CHEMISTRY,103(3-4),382-392.
MLA	Xiao, Y. K.,et al."Boron isotopic fractionation during seawater evaporation".MARINE CHEMISTRY 103.3-4(2007):382-392.

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