摘要
通过对柴达木西部地区北部新盐带潜卤水的赋存特征、水化学成分、化学类型及相图研究,初步揭示了其水化学特征。研究表明,该潜卤水与柴达木盆地晶间卤水含量相比,Ca2+、Na+值较高,K+、Cl-值接近,Mg2+、HCO-3较低,SO2-4偏低。总体而言,潜卤水的主要离子变化幅度不同,分布不均匀,TDS、Cl-和Na+的Cv值较小,Mg2+、Li+、SO2-4、NO-3、CO2-3的Cv值较大,HCO-3、B2O3、K+、Ca2+成分介于二者之间,其水化学类型划分为硫酸镁亚型和氯化物型两类,二者分别在K+、Na+、Mg2+∥Cl-、SO2-4-H2O五元体系相图和K+、Na+、Mg2+∥Cl--H2O四元体系相图中反映出不同的演化阶段。
This research revealed the hydrochemical characteristic of the xinyandai latent brine in Qaidam basin which was preliminarily based on the study of its occurrence characteristic, hydrochemical composition, chemical type and metastable phase diagram. The results showed that the value of Ca2 ＋ and Na＋ were higher than that in intercrystalline brine of Qaidam basin, the value of K ＋ and Cl- were approximately similar and Mg2＋ , HC03- and SO24- were lower. In summary, the change ranges of main ions in latent brine were different and the distribution was uneven. The chemical type of latent brine belonged to magnesium sulfate subtype and chloride type. Both showed different evolutionary stage respectively in K＋,Na＋, Mg2＋ //Cl-,SO42- -H2O quinary system phase diagram and K＋ ,Na＋ ,Mg2＋//Cl- -H2 0 quaternary system phase diagram.
出处
《盐业与化工》
CAS
2013年第12期8-12,共5页
Jounral of Salt and Chemical Industry
关键词
北部新盐带
潜卤水
水化学类型
介稳相图
northern new salt
belt
latent brine
hydrochemical characteristic
metastable phase diagram
