Variations in isotopic compositions of chlorine in evaporation-controlled salt lake brines of Qaidam Basin, China

Autor:	Wang Yun-hui, Zhou Yin-min, Xiao Ying-kai, P. V. Shirodkar, Liu Weiguo
Rok vydání:	2000
Předmět:	Chemistry Inorganic chemistry Isotopes of chlorine chemistry.chemical_element Fractionation Thermal ionization mass spectrometry Structural basin Oceanography Evaporation (deposition) Ion Brine Environmental chemistry polycyclic compounds Chlorine Water Science and Technology
Zdroj:	Chinese Journal of Oceanology and Limnology. 18:169-177
ISSN:	1993-5005 0254-4059
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c3a216a61e6e9f28490ca33a81d9d054 https://doi.org/10.1007/bf02842577 Zobrazit plný text záznamu Full text from SpringerLink