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| 盐湖中盐类矿物沉积过程中氯同位素效应的初步研究 |
| The Preliminary Investigation on Chlorine Isotopic Fractionation During the Crystallization of Saline Minerals in Salt Lake |
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| DOI： |
| 中文关键词: 氯，同位素效应，盐类沉积 |
| 英文关键词:Chlorine, Isotopic fractionation, Brine, Saline minerals, |
| 基金项目:国家自然科学基金 |
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| 摘要点击次数: 750 |
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| 中文摘要: |
| 采用Ｃｓ２Ｃｌ＋离子正热电离质谱测定氯同位素的方法，初步研究了盐湖卤水中盐类矿物结晶过程中的氯同位素分馏．研究结果表明，在自然条件下，盐类矿物自盐湖卤水中结晶时，３７Ｃｌ优先进入固相，这是造成盐湖卤水中氯同位素组成变化的重要因素．但在实验室条件下，盐类矿物自盐湖卤水中快速结晶时，则有相反的氯同位素分馏发生，即３５Ｃｌ优先进入固相，本文初步讨论了这种绝然相反的氯同位素分馏的机理． |
| 英文摘要: |
| A prelminery investigation on isotopic fractionation of chlorine in brine during crystallization of saline minerals has been studied by the procedure based on the measurment of Cs2Cl ion using thermal ionization mass spectrometry. The resuls show that the 37Cl preferentialy enters into the solid phase during the incorporation of dissolved chlorine into the chloride salts in the nature. This is important factor causing the isotopic variations of chlorine in-brine. A converse chlorine isotopic fractionation during the quick crystallization of chloride salts in the laboratory has been observed and the mechanism for this isotopic fsactionation of chlorine has been discussed. |
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