Genesis of underground brine along south coast of Laizhou Bay:hydrochemical characteristics

作     者：江雪艳 于志刚 宁劲松 陈洪涛 米铁柱 

作者机构：Chemistry and Chemical Engineering College Ocean University of China Environmental Science and Engineering College Ocean University of China 

出 版 物：《Chinese Journal of Oceanology and Limnology》 (中国海洋湖沼学报（英文版）)

年 卷 期：2006年第24卷第4期

页      面：435-442页

核心收录：

学科分类：070702[理学-海洋化学] 07[理学] 0707[理学-海洋科学] 

基　　金：Supported by NSFC (No. 40276026)  and the Key Science and Tech-nology Plan of The Ministry of Education of China (156-00079) 

主　　题：Laizhou Bay underground brine evaporation formation of brine freezing formation of brine Na/Cl ratio Ca/Mg ratio 

摘      要：Hydrochemistry of underground brines along south coast of Laizhou Bay, Shandong, China has been analyzed. Brine samples were collected from 43 wells in this area. It was considered that the brines were originated from seawater. However, whether they were formed by seawater evaporation or seawater freezing was not fully sure. We created a simple method by plotting Na/Cl vs. seawater concen-tration factor (SCF) and Ca/Mg vs. SCF to determine the brine formation geochemically. Comparison of our results to previous seawater freezing and evaporation experiments indicated that the brines were formed by seawater evaporation. The ratios of HCO3/Cl of some low salinity brines in the study area were relatively higher, indicating that the brines may have mixed with other waters after the generation. The Br/Cl ratios of the brines decreased annually in the past 20 to 30 years of exploitation, indicating down-ward permeation of the brine from which bromine was extracted.