| VARIATIONS IN ISOTOPIC COMPOSITIONS OF CHLORINE IN EVAPORATION-CONTROLLED SALT
LAKE BRINES OF QAIDAM BASIN，CHINA |
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| 引用本文： | 肖应凯,刘卫国,周引民,王蕴慧.VARIATIONS IN ISOTOPIC COMPOSITIONS OF CHLORINE IN EVAPORATION-CONTROLLED SALT
LAKE BRINES OF QAIDAM BASIN，CHINA[J].中国海洋与湖沼学报,2000,18(2):169-177. |
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| 作者姓名： | 肖应凯 刘卫国 周引民 王蕴慧 |
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| 作者单位： | XIAO Ying kai，LIU Wei guo ZHOU Yin min，WANG Yun hui )(Qinghai Institute of Salt Lakes，Chinese Academy of Sciences，Xining 810008，China) Shirodkar，P. V. (National Institute of Oceanography，Dona Paula，Goa，403 004，India) |
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| 基金项目： | Project4 91 73 1 63supportedbyNSFC |
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| 摘 要： | ＩＮＴＲＯＤＵＣＴＩＯＮＣｈｌｏｒｉｎｅｈａｓｔｗｏｎａｔｕｒａｌｌｙｏｃｃｕｒｉｎｇｓｔａｂｌｅｉｓｏｔｏｐｅｓ, 35Ｃｌａｎｄ 37Ｃｌ.Ｓｅｖｅｒａｌｓｔｕｄｉｅｓｒｅｐｏｒｔｅｄｔｈｅｖａｒｉａｔｉｏｎｓｉｎｔｈｅｉｓｏｔｏｐｉｃｃｏｍｐｏｓｉｔｉｏｎｏｆｃｈｌｏｒｉｎｅｉｎｎａｔｕｒｅ.Ｈｏｗｅｖｅｒ,ｉｎｔｈｅｅａｒｌｙｙｅａｒｓＯｗｅｎａｎｄＳｃｈａｅｆｆｅｒ(1955)ｒｅｐｏｒｔｅｄｎｏｏｂｓｅｒｖａｂｌｅｄｉｆｆｅｒｅｎｃｅｉｎｔｈｅ 37Ｃｌ35Ｃｌｒａｔｉｏｓｉｎｔｅｎｓａｍｐｌｅｓｅｘ…
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| 收稿时间： | 3 June 1998 |
| 修稿时间： | 10 March 1999 |
Variations in isotopic compositions of chlorine in evaporation-controlled salt lake brines of Qaidam Basin, China |
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| Xiao Ying-kai,Liu Wei-guo,Zhou Yin-min,Wang Yun-hui,P. V. Shirodkar.Variations in isotopic compositions of chlorine in evaporation-controlled salt lake brines of Qaidam Basin, China[J].Chinese Journal of Oceanology and Limnology,2000,18(2):169-177. |
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| Authors: | Xiao Ying-kai Liu Wei-guo Zhou Yin-min Wang Yun-hui P V Shirodkar |
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| Institution: | (1) Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, 810008 Xining, China;(2) National Institute of Oceanography, 403 004 Dona Paula, Goa, India |
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| Abstract: | The variations in the isotopic compositions of chlorine in evaporation-controlled saline lake brines were determined by using
an improved procedure for precise measurement of chlorine isotopes based on Cs2Cl+ ion by thermal ionization mass spectrometry. The results showed that variation in δ37 Cl values in these evaporation-controlled brines are attributable to evaporation of brine accompanied by the deposition of
saline minerals. The isotopic fractionation of chlorine between the deposited saline mineral and the co-existing brine caused
the variation of δ37 Cl values in the brine. In general the isotopic fractionation of chlorine in nature indicates enrichment of37Cl in the solid phase relative to35Cl. The reverse isotopic fractionation of chlorine in which35Cl is enriched in the solid phase, was observed to some extent during quick deposition under laboratory conditions as well
as in nature. The mechanism of isotopic fractionation of chlorine during evaporation deposition was studied.
Project 49173163 supported by NSFC. |
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| Keywords: | chlorine isotopic composition salt lakes |
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