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EXPLOITATION & DEVELOPMENT OF CHINA'S salt LAKE RESOURCES

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Bulletin of the Chinese Academy of Sciences 1997年第2期11卷 130-134页

作者： Liu Dejiang(qinghai institute of salt lakes, CAS) Song Pengsheng(qinghai Provincial S&T Commission)

This article recounts the current state of the research, developmemt and exploitation of the salt-lake resources in China’s hinterland with emphasis placed on those in qinghai Province. It suggests that R&D input in and exploitation of the resources be stepped up, as this is of vital significance in boosting the regional economy of northwest China.

关键词： EXPLOITATION DEVELOPMENT OF CHINA’S salt LAKE RESOURCES Lake than

THE ATOMIC WEIGHT OF IRIDIUM

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Chinese Chemical Letters 1992年第9期3卷 731-734页

作者： Tsing Lien CHANG Department of Chemistry,Peking University,Beijing 100871 Ying Kai XLAO qinghai institute of salt lakes,Academia Sinica,Xining 810008

The isotopic ratio R_(191/193)of iridium in minerals and reagents was precisely measured by ther- mal ionization mass spectrometry with Daly ion *** mean R_(191/193)was found to be 0.5945(9), yielding the isotopic abundance as 37.29(3)atom％^(191)Ir and 62.71(3)atom％^(193)*** with known nuclidic masses,the atomic weight od iridium calculated therefrom is 192.216(1)at 2SD basis,or 192.217(2)when the instrument was calibrated with the absolute isotopic ratio of rhenium.

关键词： Mean THE ATOMIC WEIGHT OF IRIDIUM

THE ATOMIC WEIGHT OP INDIUM

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Chinese Chemical Letters 1991年第5期2卷 407-410页

作者： Tsing Lien CHANG Department of Chemistry, Peking University, Beijing 100871 Ying Kai XIAO qinghai institute of salt lakes, Academia Sinica, Xining 810008

Five samples of the indium material were examined for the isotopic abundance, and no variation was found. The isotopic ratio R_(191/193) was precisely measured by thermal ionization mass spectrometry, yielding a new v... 详细信息

关键词： THE ATOMIC WEIGHT OP INDIUM In OP

STUDY ON THE POLYMER ELECTROLYTES OF(PMA/PEG)n:LiClO_4 SYSTEM

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Chinese Chemical Letters 1991年第9期2卷 713-716页

作者： Yan LIU (Department of Chemistry,qinghai Medical Colleng,xining,810001) Zeng Liang CAI Chang Ming FANG Yi ZHANG Hai Chun GAO (qinghai institute of salt lakes,Chinese Academy of Science,Xining,810008)

Lithium ion conducting polymer electrolytes were prepared by blending poly(methyl acrylate)[PMA] with poly(ethylene glycol)[PEG]and coordinating them with LiC10_*** highest conductivity was above 1×10^(-6)S/cm at roo... 详细信息

关键词： PEG Li PMA/PEG)n STUDY ON THE POLYMER ELECTROLYTES OF

Geomorphologic evidence of phased uplift of the northeastern qinghai-Tibet Plateau since 14 million years ago

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Science China Earth Sciences 2004年第9期47卷 822-833页

作者： LU Huayu1, WANG Xiaoyong1, AN Zhisheng1, MIAO Xiaodong1, ZHU Rixiang3, MA Haizhou2, LI Zhen4, TAN Hongbing2 & WANG Xianyan1 1. State Key Laboratory of Loess and Quaternary Geology, institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075 China 2. qinghai institute of salt lakes, Chinese Academy of Sciences. Xining 810008, China 3. institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 4. Department of Geography, qinghai Normal University, Xining 810008, China State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi’an China institute of Geology and Geophysics Chinese Academy of Sciences Beijing China qinghai institute of salt lakes Chinese Academy of Sciences Xining China Department of Geography Qinghai Normal University Xining China

A typical sequence of fluvial terraces and aeolian deposits overlying these ter- races were multidisciplinary investigated. New evidences for uplift process of the northeastern qinghai-Tibetan Plateau in the past 14 million years were obtained. At least 11 river terraces along Huangshui, the first-class tributary of Yellow River, at the Xining-Huzhu region are identi- fied. While the first one (T1) is classified as an accumulation terrace, the others are all basement river terraces, which consist of the Tertiary sandstone and siltstone bedrock, fluvial gravel and pebbles and the overlying aeolian loess-Red Clay deposit. Samples from the aeolian deposits were examined for paleomagnetic stratigraphic reconstruction (1030 samples), luminescence dating (16 samples), magnetic susceptibility and grain-size distribution (more than 4000 sam- ples). The luminescence dating and stratigraphic correlation suggest that terraces of Tll, T10, T8, T7, T3, T2, T1 were formed at 14, 11.3, 1.55, 1.2, 0.15, 0.07 and 0.01 million years ago, re- spectively. Sedimentological analysis and geomorphological observation indicate that formation and evolution of these terraces were mainly driven by tectonic uplift. Therefore, the terrace se- quence provides an ideal geological record, of the uplift process of the northeastern during the past 14 million years, and the timings of the terraces formation are regarded as the timings of tectonic uplift. The significant uplifting events took place at 14, 11.3, 1.2 and 0.15 mil- lion years ago, respectively. The fluvial incision at the Xining-Huzhu region is less than 100 m during a period of ~12 million years in the Miocene era (between the Tll and T9), while the Huangshui River had incised 432 m during the past 1.2 million years (from T7 to the present floodplain). The river incision process clearly demonstrates that accelerated rising of the north- eastern qinghai-Tibet Plateau during the late Cenozoic, and provides new evidence of previous thoughts

关键词： river terrace, tectonic uplift, loess-Red Clay, the past 14 million years, northeastern qinghai-Tibet Plateau.

An unusual isotopic fractionation of boron in synthetic calcium carbonate precipitated from seawater and saline water

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Science China Chemistry 2006年第5期49卷 454-465页

作者： XIAO Yingkai1,2,LI Shizhen1,WEI Haizhen1,SUN Aide1,ZHOU Weijian2 & LIU Weiguo2 1. qinghai institute of salt lakes,Chinese Academy of Sciences,Xining 810008,China 2. State Key Laboratory of Loess and Quaternary Geology,institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710075,China qinghai institute of salt lakes Chinese Academy of Sciences Xining China State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi’an China

Inorganic calcium carbonate precipitation from natural seawater and salinewater at various pH values was carried out experimentally. The results show the clear positiverelationships between boron concentration and δ^(11)B of inorganic calcium carbonate with the pH ofnatural seawater and saline water. However, the variations of boron isotopic fractionation betweeninorganic calcite and seawater/saline water with pH are inconsistent with the hypothesis thatB(OH)_4^- is the dominant species incorporated into the biogenic calcite structure. The isotopicfractionation factors a between synthetic calcium carbonate precipitate and parent solutionsincrease systematically as pH increases, from 0.9884 at pH 7.60 to 1.0072 at pH 8.60 for seawaterand from 0.9826 at pH 7.60 to 1.0178 at pH 8.75 for saline water. An unusual boron isotopicfractionation factor of larger than 1 in synthetic calcium carbonate precipitated fromseawater/saline water at higher pH is observed, which implies that a substantial amount of theisotopically heavier B(OH)_3 species must be incorporated preferentially into synthetic inorganiccarbonate. The results propose that the incorporation of B(OH)_3 is attributed to the formation ofMg(OH)_2 at higher pH of calcifying microenvironment during the synthetic calcium carbonateprecipitation. The preliminary experiment of Mg(OH)_2 precipitated from artificial seawater showsthat heavier ^(11)B is enriched in Mg(OH)_2 precipitation, which suggests that isotopically heavierB(OH)_3 species incorporated preferentially into Mg(OH)_2 precipitation. This result cannot beapplied to explain the boron isotopic fractionation of marine bio-carbonate because of thepossibility that the unusual environment in this study appears in formation of marine bio-carbonateis infinitesimal. We, however, must pay more attention to this phenomenon observed in this study,which accidentally appears in especially natural environment.

关键词： boron, isotopic fractionation, calcium carbonate precipitate, seawater, saline water.

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青海湖地区氚的分布特征

核技术 1989年第11期12卷 679-683页

作者：黄麒梁青生中国科学院盐湖研究所

本文报道了青海湖地区天然水中氚的分布及其变化。本区氚的平均含量为342±33T.U.;河水与井水中的平均值为316±30T.U.;湖水为363±34T.U.。河水中氚的含量随季节而发生变化;表层湖水中氚的分布较均匀,而其垂直分布与湖水温度有关。

关键词：天然水氘冲稀作用青海湖

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恒温式滴定量热计连续测定溶液稀释热的研究

化学学报 1989年第5期47卷 465-468页

作者：王荫德翟宗玺中国科学院青海盐湖研究所

采用分批式精密微量量热计测定溶液稀释热已有较多报道。当稀释过程的热效应比较显著时,可采用恒温式滴定量热计进行测量。为在单次实验中覆盖较大稀释比范围,需注入较多稀释剂,因此,考查在滴定过程中表征量热瓶与恒温水浴间热交换的冷... 详细信息

采用分批式精密微量量热计测定溶液稀释热已有较多报道。当稀释过程的热效应比较显著时,可采用恒温式滴定量热计进行测量。为在单次实验中覆盖较大稀释比范围,需注入较多稀释剂,因此,考查在滴定过程中表征量热瓶与恒温水浴间热交换的冷却常数K的变化,并依此对该项热交换进行适当修正是非常必要的。

关键词：稀释热测定滴定量热计恒温式

PHASE EQUILIBRIUM AND PROPERTIES OF THE SATURATED SOLUTION IN THE QUATERNARY SYSTEM Li_2B_4O_7-Li_2SO_4-LiCl-H_2O AT 25℃

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Chinese Science Bulletin 1986年第19期31卷 1338-1343页

作者：宋彭生杜宪惠 qinghai institute of salt lakes Academia Sinica Xining qinghai institute of salt lakes Academia Sinica Xiningeawater is a natural solution which contains many elements. In general Na~+ K~+ Mg~(++) Ca~(++) Cl~- SO_4~(--) and H_2O are considered as its main constituents. This is the famous "seawater system". As indicated in the previous paper most of the salt lakes on the Qinghai-Xizang Pla-

Seawater is a natural solution which contains many elements. In general, Na+, K+, Mg++, Ca++, Cl-, SO4--, and H2O are considered as its main constituents. This is the famous 'seawater system'. As indicated in the prev... 详细信息

关键词： saturated Quaternary seawater qinghai abundant borate solubility quantitatively boron fresh