| 托素湖湖水蒸发过程中析盐及其pH值的变化规律研究 |
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| 引用本文： | 张棣,马云麒,李兴意,杨剑,彭章旷,刘玉秀,马学海.托素湖湖水蒸发过程中析盐及其pH值的变化规律研究[J].盐湖研究,2021,29(1). |
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| 作者姓名： | 张棣 马云麒 李兴意 杨剑 彭章旷 刘玉秀 马学海 |
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| 作者单位： | 中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国地质大学,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 盐湖卤水蒸发是提取盐湖资源的主要途径之一,当前盐湖卤水的蒸发实验主要集中在矿化程度较高的盐湖和咸水湖中,蒸出矿物以硫酸盐和氯化物为主。为了获得湖水蒸发过程中从低矿化度到高矿化度全阶段的析盐和pH值变化规律,本文用托素湖微咸水在恒温室内开展28±2℃蒸发实验。托素湖为硫酸镁亚型微咸水湖(矿化度27.8 g/L),整个蒸发过程中pH值由8.92持续降低到6.108；矿物析出顺序为三水菱镁矿-文石-石盐-六水泻盐-白钠镁矾-五水泻盐-四水泻盐,共有七组盐类析出。卤水pH值的变化主要受矿物相变化控制,在碳酸盐析出过程中pH由8.529迅速降低到7.205,而后以析出矿物石盐为主的石盐-硫酸盐析出阶段pH降低到6.887,之后在白钠镁为主硫酸盐-石盐阶段pH缓慢降低到6.29。同时分析了石膏、芒硝、泻利盐等矿物未析出的原因。通过托素湖湖水蒸发实验,可以更全面的认识硫酸镁亚型盐湖演化全过程中的矿物沉积规律及物理化学性质变化。
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| 关 键 词： | 托素湖，微咸水湖，蒸发实验，pH值 |
| 收稿时间： | 2020/5/21 0:00:00 |
| 修稿时间： | 2020/6/16 0:00:00 |
Researching the Regularity of Salt separation and the Variation of pH Value in the Process of Evaporation in Tuosu Lake water |
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| ZHANG Di,MA Yun-qi,LI Xing-yi,YANG Jian,PENG Zhang-kuang,LIU Yu-xiu and MA Xue-hai.Researching the Regularity of Salt separation and the Variation of pH Value in the Process of Evaporation in Tuosu Lake water[J].Journal of Salt Lake Research,2021,29(1). |
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| Authors: | ZHANG Di MA Yun-qi LI Xing-yi YANG Jian PENG Zhang-kuang LIU Yu-xiu and MA Xue-hai |
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| Institution: | Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,China University of Geosciences,Beijing,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining |
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| Abstract: | |
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| Keywords: | Tuosu lake Brackish water lake Evaporation experiment pH |
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