Chemical Characteristics and Formation of Karst Water in Guilin Area, China

摘要

In present study, the chemical characteristics and evolution law of the Guilin karst water are reported. The chemical compositions of 74 karst water samples and one local rain water sample were compared and analyzed. The dissolved amounts of minerals and gas in the 74 karst water samples were calculated using mass balance approach. The forming environments of the karst water were analyzed and discussed. The results show that the karst water in this region is formed by the dissolutions of gypsum, calcite, dolomite and atmospheric CO2 on the basis of the chemical compositions of the local rain water and the Guilin karst water is formed in a relatively open environment.