Stable isotope fractionation of chlorine during the precipitation of single chloride minerals

ISL OpenIR > 青海盐湖研究所知识仓储

	Stable isotope fractionation of chlorine during the precipitation of single chloride minerals
	Luo, Chongguang 1,2; Xiao, Yingkai 2; Wen, Hanjie 1; Ma, Haizhou 2; Ma, Yunqi 2; Zhang, Yanling 2; Zhang, Yuxu 1; He, Maoyong 3
	2014-08-01
发表期刊	APPLIED GEOCHEMISTRY
卷号	47 页码:141-149
摘要	In order to better understand chlorine isotopic variations during brine evolution, experiments were designed to determine the changes in the chlorine isotope composition (delta Cl-37 value) during evaporations of solutions containing NaCl, KCl and MgCl2 center dot 6H(2)O at 28 +/- 2 degrees C. Three evaporation experiments were conducted in a clean environment. The precipitate and brine samples were collected during the evaporation, and the chlorine isotopic ratios of the samples were determined using an improved thermal ionisation mass spectrometry procedure based on Cs2Cl+ ion measurement. The results are as follows: the mean fractionation factors of the three solutions are alpha(Na) = 1.00055, alpha(K) = 1.00025, and alpha(Mg) = 1.00012, respectively, where alpha(Na), alpha(K) and alpha(Mg) are the fractionation factors between salts (NaCl, KCl and MgCl2 center dot 6H(2)O) and saturated solutions. The results showed that the delta Cl-37 values of precipitate and coexisting brine samples decrease during the precipitation of single chloride minerals. The residual brine was a Cl-35 reservoir for different single chloride solutions. New chlorine isotopic evolution curve during seawater evaporation were also calculated. The results indicated that during the primary precipitation stage of halite, delta Cl-37 decreased continuously, and the most important thing is that this trend continues during the final stages when Mg-salts begin to precipitate. (C) 2014 Elsevier Ltd. 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/363002/5718
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, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550002, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, CAS Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternaly Geol, Xian 710075, Peoples R China
推荐引用方式 GB/T 7714	Luo, Chongguang,Xiao, Yingkai,Wen, Hanjie,et al. Stable isotope fractionation of chlorine during the precipitation of single chloride minerals[J]. APPLIED GEOCHEMISTRY,2014,47:141-149.
APA	Luo, Chongguang.,Xiao, Yingkai.,Wen, Hanjie.,Ma, Haizhou.,Ma, Yunqi.,...&He, Maoyong.(2014).Stable isotope fractionation of chlorine during the precipitation of single chloride minerals.APPLIED GEOCHEMISTRY,47,141-149.
MLA	Luo, Chongguang,et al."Stable isotope fractionation of chlorine during the precipitation of single chloride minerals".APPLIED GEOCHEMISTRY 47(2014):141-149.