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以中国西南碳酸岩盐地区的红枫湖及环湖河流水体为研究对象,采用液-液萃取和ICP-MS测试方法,对水中溶解态稀土元素浓度进行了测定,借以探讨碳酸盐岩水体环境下稀土元素的地球化学行为和环境效应。研究结果表明,红枫湖湖水溶解态稀土含量相对较低,∑REE总浓度分布于14.3～27.2 ng.kg-1之间,平均含量为18.24 ng.kg-1,明显低于地表水体浓度平均值。环湖河水溶解态∑REE浓度分布于4.07～102.28 ng.kg-1,平均为24.12 ng.kg-1。湖水和河水的页岩(PAAS)标准化的溶解态稀土元素配分模式都显示了显著的重稀土富集特征以及Ce元素负异常,而水化学络合计算结果显示,水体中溶解态稀土几乎以占绝对优势的碳酸盐无机络合形态存在,其他络合方式所占比例非常微小。这些都显示与相对偏碱性的水化学环境有关。
Taking red maple lake and lake water body in the carbonate rock salt area of Southwest China as the research object, the concentrations of dissolved rare earth elements in the water were determined by liquid-liquid extraction and ICP-MS, REE Geochemical Behavior and Environmental Effects. The results show that the content of dissolved REE in Hongfeng Lake is relatively low, and the total ΣREE concentration is distributed between 14.3-27.2 ng.kg-1 and the average content is 18.24 ng.kg-1, which is obviously lower than the average concentration of surface water value. The ΣREE concentration in the lake was distributed between 4.07 and 102.28 ng · kg-1 with an average of 24.12 ng · kg-1. The standardized dissolved REE patterns of shale (PAAS) in lake and river water all show significant HREE enrichment characteristics and negative Ce anomalies, and the results of hydration complexation show that dissolved REEs in water account for almost Absolute advantage of carbonate inorganic complex exists, the proportion of other complex mode is very small. These are all shown to be related to the relatively alkaline aqueous environment.